HP A3100 v2 Switch Series

Transcription

1 HP A3100 v2 Switch Series Layer 2 - LAN Switching Command Reference HP A v2 SI Switch (JG221A) HP A v2 SI Switch (JG222A) HP A v2 SI Switch (JG223A) HP A v2 EI Switch (JD318B) HP A v2 EI Switch (JD319B) HP A v2 EI Switch (JD320B) HP A PoE v2 EI Switch (JD311B) HP A PoE v2 EI Switch (JD312B) HP A PoE v2 EI Switch (JD313B) Part number: Software version: Release 5103 Document version: 6W

2 Legal and notice information Copyright 2011 Hewlett-Packard Development Company, L.P. No part of this documentation may be reproduced or transmitted in any form or by any means without prior written consent of Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. HEWLETT-PACKARD COMPANY MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

3 Contents Ethernet interface configuration commands 1 broadcast-suppression 1 combo enable 2 description 2 display interface 3 display loopback-detection 11 display port-group manual 12 display storm-constrain 13 duplex 15 flow-control 15 flow-interval 16 group-member 16 interface 17 jumboframe enable 18 link-delay 18 link-delay mode up 19 loopback 20 loopback-detection action 20 loopback-detection control enable 21 loopback-detection enable 22 loopback-detection interval-time 23 loopback-detection per-vlan enable 23 mdi 24 multicast-suppression 25 port-group manual 26 reset counters interface 27 shutdown 27 speed 28 speed auto 29 storm-constrain 30 storm-constrain control 31 storm-constrain enable log 31 storm-constrain enable trap 32 storm-constrain interval 32 unicast-suppression 33 virtual-cable-test 34 Loopback and null interface configuration commands 36 default 36 description 36 display interface loopback 37 display interface null 40 interface loopback 41 interface null 42 reset counters interface loopback 42 reset counters interface null 43 shutdown 43 MAC address table configuration commands 45 display mac-address 45 i

4 display mac-address aging-time 46 display mac-address mac-learning 47 display mac-address statistics 48 mac-address (interface view) 49 mac-address (system view) 50 mac-address mac-learning disable 51 mac-address max-mac-count (interface view) 52 mac-address timer 53 MAC Information configuration commands 55 mac-address information enable (Ethernet interface view) 55 mac-address information enable (system view) 55 mac-address information interval 56 mac-address information mode 57 mac-address information queue-length 57 Ethernet link aggregation configuration commands 59 default 59 description 59 display interface bridge-aggregation 60 display lacp system-id 63 display link-aggregation load-sharing mode 63 display link-aggregation member-port 65 display link-aggregation summary 67 display link-aggregation verbose 68 enable snmp trap updown 70 interface bridge-aggregation 71 lacp port-priority 72 lacp period short 72 lacp system-priority 73 link-aggregation load-sharing mode 73 link-aggregation mode 74 link-aggregation selected-port minimum 75 port link-aggregation group 76 reset counters interface 76 reset lacp statistics 77 shutdown 77 Port isolation configuration commands 79 display port-isolate group 79 port-isolate enable 80 MSTP configuration commands 82 active region-configuration 82 bpdu-drop any 82 check region-configuration 83 display stp 84 display stp abnormal-port 90 display stp bpdu-statistics 91 display stp down-port 93 display stp history 94 display stp region-configuration 95 display stp root 96 display stp tc 97 instance 98 region-name 99 ii

5 reset stp 100 revision-level 100 stp bpdu-protection 101 stp bridge-diameter 102 stp compliance 102 stp config-digest-snooping 103 stp cost 104 stp edged-port 105 stp enable 106 stp loop-protection 107 stp max-hops 108 stp mcheck 108 stp mode 109 stp no-agreement-check 110 stp pathcost-standard 110 stp point-to-point 111 stp port priority 112 stp port-log 113 stp priority 114 stp region-configuration 114 stp root primary 115 stp root secondary 115 stp root-protection 116 stp tc-protection 117 stp tc-protection threshold 117 stp tc-snooping 118 stp timer forward-delay 119 stp timer hello 119 stp timer max-age 120 stp timer-factor 121 stp transmit-limit 121 vlan-mapping modulo 122 BPDU tunneling configuration commands (available only on the A3100 v2 EI) 124 bpdu-tunnel dot1q 124 bpdu-tunnel tunnel-dmac 125 VLAN configuration commands 126 VLAN configuration commands 126 description 126 display interface vlan-interface 127 display vlan 129 interface vlan-interface 130 ip address 131 name 131 reset counters interface vlan-interface 132 shutdown 133 vlan 133 Port-based VLAN configuration commands 134 display port 134 port 135 port access vlan 136 port hybrid pvid 137 port hybrid vlan 138 port link-type 140 iii

6 port trunk permit vlan 141 port trunk pvid 142 MAC address-based VLAN configuration commands 144 display mac-vlan 144 display mac-vlan interface 145 mac-vlan enable 146 mac-vlan mac-address 146 Protocol-based VLAN configuration commands (available only on the A3100 v2 EI) 148 display protocol-vlan interface 148 display protocol-vlan vlan 149 port hybrid protocol-vlan 150 protocol-vlan 151 Voice VLAN configuration commands (available only on the A3100 v2 EI) 154 display voice vlan oui 154 display voice vlan state 155 voice vlan aging 156 voice vlan enable 157 voice vlan mac-address 157 voice vlan mode auto 158 voice vlan qos 159 voice vlan qos trust 160 voice vlan security enable 160 GVRP configuration commands 162 display garp statistics 162 display garp timer 163 display gvrp local-vlan 164 display gvrp state 164 display gvrp statistics 166 display gvrp status 167 display gvrp vlan-operation 168 garp timer hold 168 garp timer join 169 garp timer leave 170 garp timer leaveall 170 gvrp 171 gvrp registration 171 reset garp statistics 172 QinQ configuration commands 174 nest (available only on the A3100 v2 EI) 174 qinq enable 174 qinq enable downlink (available only on the A3100 v2 EI) 175 qinq ethernet-type 176 qinq vid (available only on the A3100 v2 EI) 177 raw-vlan-id inbound (available only on the A3100 v2 EI) 178 VLAN mapping configuration commands (available only on the A3100 v2 EI) 180 qinq enable downlink 180 remark customer-vlan-id 181 remark service-vlan-id 181 LLDP configuration commands 182 display lldp local-information 182 display lldp neighbor-information 186 display lldp statistics 191 iv

7 display lldp status 193 display lldp tlv-config 194 lldp admin-status 196 lldp check-change-interval 197 lldp compliance admin-status cdp (available only on the A3100 v2 EI) 198 lldp compliance cdp (available only on the A3100 v2 EI) 198 lldp enable 199 lldp encapsulation snap 199 lldp fast-count 200 lldp hold-multiplier 201 lldp management-address-format string 201 lldp management-address-tlv 202 lldp notification remote-change enable 203 lldp timer notification-interval 203 lldp timer reinit-delay 204 lldp timer tx-delay 204 lldp timer tx-interval 205 lldp tlv-enable 205 Support and other resources 208 Contacting HP 208 Subscription service 208 Related information 208 Documents 208 Websites 208 Conventions 209 Index 211 v

8 Ethernet interface configuration commands broadcast-suppression broadcast-suppression { ratio kbps max-kbps } undo broadcast-suppression Ethernet interface view, port group view ratio: Sets the broadcast suppression threshold as a percentage of the port transmission capability, ranging from 1 to 100. The smaller the percentage, the less broadcast traffic is allowed to pass through. kbps max-bps: Sets the broadcast suppression threshold in kbps to limit the number of kilobits of broadcast traffic passing through the Ethernet port per second. For a 100 Mbps port, the value range is 1 to For a 1000 Mbps port, the value range is 1 to Use the broadcast-suppression command to set the broadcast suppression threshold on one or multiple Ethernet interfaces. Use the undo broadcast-suppression command to restore the default. By default, Ethernet interfaces do not suppress broadcast traffic. If you execute this command in Ethernet interface, the configuration takes effect only on the current interface. If you execute this command in port group view, the configuration takes effect on all the ports in the port group. When broadcast traffic exceeds the broadcast suppression threshold, the interface discards broadcast packets until the broadcast traffic drops below the threshold. NOTE: If you set different broadcast suppression thresholds in Ethernet interface view or port group view multiple times, the one configured last takes effect. For a particular type of traffic, configure either storm suppression or storm control, but not both. If both of them are configured, you may fail to achieve the expected storm control effect. # Set the broadcast suppression threshold to 20% on Ethernet interface Ethernet 1/0/1. 1

9 [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] broadcast-suppression 20 # Set the broadcast suppression threshold to 20% on all ports in manual port group group1. [Sysname] port-group manual group1 [Sysname-port-group-manual-group1] group-member ethernet 1/0/1 [Sysname-port-group-manual-group1] group-member ethernet 1/0/2 [Sysname-port-group-manual-group1] broadcast-suppression 20 combo enable combo enable { copper fiber } Ethernet interface view (combo interface) copper: Activates the copper combo port. fiber: Activates the fiber combo port. Use the combo enable command to activate the copper or fiber combo port. By default, the copper combo port is activated. Combo interfaces are logical interfaces. A combo interface comprises one fiber combo port and one copper combo port. The two ports cannot work simultaneously. If one port is enabled, the other port is automatically disabled. # Activate the copper port of combo interface GigabitEthernet 1/0/25. [Sysname] interface gigabitethernet 1/0/25 [Sysname-GigabitEthernet1/0/25] combo enable copper # Activate the fiber port of combo interface GigabitEthernet 1/0/25. [Sysname] interface gigabitethernet 1/0/25 [Sysname-GigabitEthernet1/0/25] combo enable fiber description description text undo description 2

10 Ethernet interface view text: Creates an interface description, a string of 1 to 80 characters. Valid characters and symbols include English letters (A to Z, a to z), digits (0 to 9), special English characters, spaces, and other Unicode characters and symbols. NOTE: Each Unicode character takes the space of two regular characters. To use a type of Unicode characters or symbols in an interface description, install the specific input method editor and log in to the switch through remote login software that supports this character type. When the length of a description string reaches or exceeds the maximum line width on the terminal software, the software starts a new line, possibly breaking a Unicode character into two. As a result, garbled characters may be displayed at the end of a line. Use the description command to change the description of an interface. Use the undo description command to restore the default. The default description of an interface is the interface name plus Interface, for example, Ethernet1/0/1 Interface. Related commands: display interface. # Change the description of interface Ethernet 1/0/1 to lanswitch-interface. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] description lanswitch-interface display interface Any view display interface [ interface-type ] [ brief [ down ] ] [ { begin exclude include } regular-expression ] display interface interface-type interface-number [ brief ] [ { begin exclude include } regular-expression ] 1: Monitor level interface-type: Specifies an interface type. interface-number: Specifies an interface number. 3

11 brief: Displays brief interface information. If you do not specify this keyword, this command displays detailed interface information. down: Displays information about interfaces in the DOWN state and the causes. If you do not specify this keyword, this command displays information about interfaces in all states. : Filters command output by specifying a regular expression. For more information about regular expressions, see the Fundamentals Configuration Guide. begin: Displays the first line that matches the specified regular expression and all lines that follow. exclude: Displays all lines that do not match the specified regular expression. include: Displays all lines that match the specified regular expression. regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters. Use the display interface command to display Ethernet interface information. If no interface type is specified, this command displays information about all interfaces. If an interface type is specified but no interface number is specified, this command displays information about all interfaces of the particular type. If both interface type and interface number are specified, this command displays information about only the specified interface. Related commands: interface. # Display detailed information about Layer 2 interface Ethernet 1/0/1. <Sysname> display interface ethernet1/0/1 Ethernet1/0/1 current state: UP IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000f-e : Ethernet1/0/1 Interface Loopback is not set Media type is twisted pair Port hardware type is 100_BASE_T 100Mbps-speed mode, full-duplex mode Link speed type is autonegotiation, link duplex type is autonegotiation Flow-control is not enabled The Maximum Frame Length is 1536 Broadcast MAX-ratio: 100% Unicast MAX-ratio: 100% Multicast MAX-ratio: 100% PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: access Tagged VLAN ID : none Untagged VLAN ID : 1 Port priority: 0 Peak value of input: 449 bytes/sec, at :58:46 Peak value of output: 324 bytes/sec, at :30:24 Last 300 seconds input: 3 packets/sec 381 bytes/sec 0% 4

12 Last 300 seconds output: 3 packets/sec 228 bytes/sec 0% Input (total): packets, bytes unicasts, 5345 broadcasts, multicasts, 0 pauses Input (normal): packets, - bytes unicasts, 5345 broadcasts, multicasts, 0 pauses Input: 0 input errors, 0 runts, 0 giants, 0 throttles 0 CRC, 0 frame, - overruns, 0 aborts - ignored, - parity errors Output (total): packets, bytes unicasts, 3773 broadcasts, 997 multicasts, 0 pauses Output (normal): packets, - bytes unicasts, 3773 broadcasts, 997 multicasts, 0 pauses Output: 0 output errors, - underruns, - buffer failures 0 aborts, 0 deferred, 0 collisions, 0 late collisions 0 lost carrier, - no carrier Table 1 Output description Field Ethernet1/0/1 current state IP Packet Frame Type Loopback 100Mbps-speed mode, full-duplex mode Link speed type is autonegotiation link duplex type is autonegotiation The Maximum Frame Length Broadcast MAX-ratio Unicast MAX-ratio Physical state of the Ethernet interface: DOWN ( Administratively ) The Ethernet interface was shut down with the shutdown command, that is, the interface is administratively down. DOWN ( Link-Aggregation interface down ) The Ethernet interface is physically down because the aggregate interface corresponding to the aggregation group to which the Ethernet interface belongs was shut down with the shutdown command. DOWN The Ethernet interface is administratively up but physically down (possibly because no physical link is present or the link has failed). UP The Ethernet interface is both administratively and physically up. Ethernet framing format on the interface. of the interface. Loopback testing status of the interface. The interface operates at 100 Mbps and in full-duplex mode. The interface will negotiate a speed with its peer. The interface will negotiate a duplex mode with its peer. The maximum Ethernet frame length allowed on the interface. Broadcast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops broadcast packets. Unknown unicast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops unknown unicast packets. 5

13 Field Multicast MAX-ratio PVID Mdi type Port link-type Tagged VLAN ID Untagged VLAN ID Last clearing of counters: Never Peak value of input Peak value of output Last 300 seconds input: 3 packets/sec 381 bytes/sec 0% Last 300 seconds output: 3 packets/sec 228 bytes/sec 0% Input (total): packets, bytes unicasts, 5345 broadcasts, multicasts, 0 pauses Input (normal): packets, - bytes unicasts, 5345 broadcasts, multicasts, 0 pauses input errors runts giants - throttles Multicast suppression threshold as a percentage of the interface transmission capability. When the threshold is exceeded, the interface drops multicast packets. Port VLAN ID. Cable type. Link type of the interface, which could be access, trunk, or hybrid. VLANs for which the interface sends packets without removing VLAN tags. VLANs for which the interface sends packets after removing VLAN tags. Time when the reset counters interface command was last used to clear statistics on the interface. Never indicates that the reset counters interface command was never used since the switch was started. Peak value of inbound traffic, in bytes/sec. Peak value of outbound traffic, in bytes/sec. Average rate of input and output traffic in the last 300 seconds, in pps and Bps. Inbound traffic statistics (in packets and bytes) for the interface. All inbound normal and abnormal packets (including unicast packets, broadcasts, and multicasts) and pause frames were counted. Inbound normal traffic (including unicast packets, broadcasts, and multicasts) and pause frame statistics (in packets and bytes) for the interface. Inbound packets with errors. Inbound frames shorter than 64 bytes, in correct format, and containing valid CRCs. Inbound frames larger than the maximum frame length supported on the interface, which varies by whether jumbo frame support is enabled on the interface as follows: For an Ethernet interface not enabled with jumbo frame support, giants refer to frames larger than 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). For an Ethernet interface enabled with jumbo frame support, giants refer to frames larger than bytes (without VLAN tags) or bytes (with VLAN tags). The number of times that the port is shut down due to buffer or CPU overload. 6

14 Field CRC frame overruns aborts ignored Total number of inbound frames that had a normal length but contained checksum errors. Total number of inbound frames that contained checksum errors and a non-integer number of bytes. Number of packet drops because the input rate of the port exceeded the queuing capability. Total number of illegal inbound packets: Fragment frames CRC error frames shorter than 64 bytes. The length can be an integral or non-integral value. Jabber frames CRC error frames greater than the maximum frame length supported on the Ethernet interface (the frame length may or may not be integers). For an Ethernet interface that does not permit jumbo frames, jabber frames refer to CRC error frames greater than 1518 bytes (without VLAN tags) or 1522 bytes (with VLAN tags). For an Ethernet interface that permits jumbo frames, jabber frames refer to CRC error frames greater than bytes (without VLAN tags) or bytes (with VLAN tags). Symbol error frames Frames that contained at least one undefined symbol. Unknown operation code frames Non-pause MAC control frames. Length error frames Frames whose length fields did not accord with the actual frame length (46 bytes to 1500 bytes). Number of inbound frames dropped because the receive buffer of the port ran low. - parity errors Total number of frames with parity errors. Output (total): packets, bytes unicasts, 3773 broadcasts, 997 multicasts, 0 pauses Output (normal): packets, - bytes unicasts, 3773 broadcasts, 997 multicasts, 0 pauses output errors - underruns - buffer failures aborts deferred Collisions Outbound traffic statistics (in packets and bytes) for the port. All outbound normal and abnormal packets (including unicast packets, broadcasts, and multicasts) and pause frames were counted. Outbound normal traffic (including unicast packets, broadcasts, and multicasts) and pause frame statistics (in packets and bytes) for the interface. Outbound error packet statistics. Number of packets dropped because the output rate of the interface exceeded the output queuing capability. This is a low-probability hardware anomaly. Number of packets dropped because the transmit buffer of the interface ran low. Number of packets that failed to be transmitted, for example, because of Ethernet collisions. Number of frames that the interface deferred to transmit because of detected collisions. Number of frames that the interface stopped transmitting because Ethernet collisions were detected during transmission. 7

15 Field late collisions lost carrier - no carrier Number of frames that the interface deferred to transmit after transmitting their first 512 bits, because of detected collisions. Number of carrier losses during transmission. This counter applies to serial WAN interfaces. Number of times that the port failed to detect the carrier when attempting to send frames. This counter applies to serial WAN interfaces. NOTE: If an output field is not available, a hyphen (-) is displayed. Table 2 on the possible physical states of a Layer 2 Ethernet interface Field UP DOWN DOWN ( Administratively ) DOWN ( Link-Aggregation interface down ) DOWN ( OAM connection failure ) DOWN ( DLDP connection failure ) DOWN ( Loopback detection-protected ) DOWN ( BPDU-protected ) DOWN ( Monitor-Link uplink down ) The interface is physically up. The interface is physically down, because no physical connection exists. Possibly reason: The network cable is disconnected or faulty. The interface is physically down, because it was shut down with the shutdown command. To restore its physical state, use the undo shutdown command. The interface is physically down, because the aggregate interface corresponding to the aggregation group to which it belongs was shut down with the shutdown command. The interface is physically down, because an OAM connection fails to be established on it or the current OAM connection is disconnected. The interface is physically down, because a DLDP connection fails to be established on it or the current DLDP connection is disconnected. The interface is shut down, because a loop is detected on it. The interface is shut down by the BPDU guard function. The interface is physically down, because the uplink of the monitor link group to which it belongs is down. # Display brief information about all interfaces. <Sysname> display interface brief The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol Main IP NULL0 UP UP(s) -- Vlan1 UP UP The brief information of interface(s) under bridge mode: Link: ADM - administratively down; Stby - standby Speed or Duplex: (a)/a - auto; H - half; F - full 8

16 Type: A - access; T - trunk; H - hybrid Interface Link Speed Duplex Type PVID Eth1/0/1 DOWN auto A T 400 Eth1/0/2 DOWN auto A A 2 Eth1/0/3 DOWN auto A A 3 Eth1/0/4 DOWN auto A A 1 Eth1/0/5 DOWN auto A A 1 Eth1/0/6 UP 1G(a) F(a) A 1 Eth1/0/7 DOWN auto A A 1 Eth1/0/8 DOWN auto A A 1 Eth1/0/9 DOWN auto A A 1 # Filter the brief interface information to display the first line that matches the (s) string and all lines that follow. <Sysname> display interface brief begin (s) The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol Main IP NULL0 UP UP(s) -- Vlan1 UP UP # Display brief information about interfaces in the UP state. <Sysname> display interface brief include UP The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol Main IP NULL0 UP UP(s) -- Vlan1 UP UP The brief information of interface(s) under bridge mode: Link: ADM - administratively down; Stby - standby Speed or Duplex: (a)/a - auto; H - half; F - full Type: A - access; T - trunk; H - hybrid Interface Link Speed Duplex Type PVID Eth1/0/45 UP 1G(a) F(a) A 1 # Display the brief information about all but Ethernet interfaces (display all lines that do not match the regular expression Eth). <Sysname> display interface brief exclude Eth The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol Main IP NULL0 UP UP(s) -- Vlan1 UP UP # Display information about interfaces in DOWN state and the relevant causes. <Sysname> display interface brief down The brief information of interface(s) under route mode: 9

17 Link: ADM - administratively down; Stby - standby Interface Link Cause Vlan10 DOWN Not connected The brief information of interface(s) under bridge mode: Link: ADM - administratively down; Stby - standby Interface Link Cause Eth1/0/1 DOWN Not connected Eth1/0/2 DOWN Not connected Eth1/0/3 DOWN Not connected Eth1/0/4 DOWN Not connected Eth1/0/5 DOWN Not connected Eth1/0/6 DOWN Not connected Table 3 Output description Field The brief information of interface(s) under route mode: Link: ADM - administratively down; Stby - standby Protocol: (s) - spoofing Interface Link Protocol The brief information of interface(s) under bridge mode: Speed or Duplex: (a)/a - auto; H - half; F - full Type: A - access; T - trunk; H - hybrid Speed The command displays brief information about Layer 3 interfaces. The interface has been shut down by the network administrator. To recover its physical layer state, perform the undo shutdown command. Stby indicates that the current interface is a standby interface. If the network layer protocol state of an interface is shown as UP, but its link is an on-demand link or not present at all, its protocol attribute includes the spoofing flag (an s in parentheses). This attribute is typical of interface Null 0 and the loopback interfaces. Interface name. Physical link state of the interface: UP The link is up. DOWN The link is physically down. ADM The link has been administratively shut down. To recover its physical state, perform the undo shutdown command. Stby The interface is a standby interface. Protocol connection state of the interface, which can be UP, DOWN, or UP(s). Brief information about Layer 2 interfaces. If the speed of an interface is automatically negotiated, its speed attribute includes the auto negotiation flag, letter a in parentheses. If the duplex mode of an interface is automatically negotiated, its duplex mode attribute includes the auto negotiation flag, letter a in parentheses or a capital A. Letter H indicates the half duplex mode, and letter F indicates the full duplex mode. Link type options for Ethernet interfaces. Interface rate, in bps. 10

18 Field Duplex Type PVID Cause Duplex mode of the interface: A auto-negotiation F full duplex F(a) auto-negotiated full duplex H half duplex H(a) auto-negotiated half duplex Link type of the interface: A access H hybrid T trunk Port VLAN ID of the interface. Causes why the physical state of an interface is DOWN. Table 4 provides the details. Table 4 Causes why the physical state of an interface is DOWN Field Not connected Administratively Link-Aggregation interface down OAM connection failure DLDP connection failure Loopback detection-protected BPDU-protected Monitor-Link uplink down No physical connection exists (possibly because the network cable is disconnected or faulty). The port was shut down with the shutdown command. To restore the physical state of the interface, use the undo shutdown command. The aggregate interface corresponding to the aggregation group to which the current interface belongs was shut down with the shutdown command. OAM connection fails (possibly because the connection fails to be established or the current connection is disconnected). DLDP connection fails (possibly because the connection fails to be established or the current connection is disconnected). The interface is shut down because a loop is detected on it. The interface is shut down by the BPDU guard function. The uplink of the current monitor link group to which the current interface belongs is down. display loopback-detection display loopback-detection [ { begin exclude include } regular-expression ] Any view 1: Monitor level 11

19 : Filters command output by specifying a regular expression. For more information about regular expressions, see the Fundamentals Configuration Guide. begin: Displays the first line that matches the specified regular expression and all lines that follow. exclude: Displays the lines that do not match the specified regular expression. include: Displays all lines that match the specified regular expression. regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters. Use the display loopback-detection command to display the status of the loopback detection function. If loopback detection is enabled, this command also displays the detection interval and ports in a loop condition. # Display information about loopback detection. <Sysname> display loopback-detection Loopback-detection is running. Detection interval is 30 seconds. No port is detected with loopback. display port-group manual Any view display port-group manual [ all name port-group-name ] [ { begin exclude include } regular-expression ] all: Displays information about all port groups. name port-group-name: Specifies the name of a port group, a string of 1 to 32 characters. : Filters command output by specifying a regular expression. For more information about regular expressions, see the Fundamentals Configuration Guide. begin: Displays the first line that matches the specified regular expression and all lines that follow. exclude: Displays the lines that do not match the specified regular expression. include: Displays all lines that match the specified regular expression. regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters. Use the display port-group manual command to display information about port groups. If you specify the all keyword, this command displays the name and member Ethernet interfaces of each port group on the switch. 12

20 If you specify a port group, this command displays its name and member Ethernet interfaces. If you specify neither the all keyword nor a port group name, the command displays the name of each port group on the switch. # Display the names of all port groups. <Sysname> display port-group manual The following manual port group exist(s): group1 group2 # Display detailed information about all port groups. <Sysname> display port-group manual all Member of group1: Ethernet1/0/1 Ethernet1/0/2 Ethernet1/0/3 Ethernet1/0/4 Ethernet1/0/5 Ethernet1/0/6 Member of group2: None # Display detailed information about port group group1. <Sysname> display port-group manual name group1 Member of group1: Ethernet1/0/1 Ethernet1/0/2 Ethernet1/0/3 Ethernet1/0/4 Ethernet1/0/5 Ethernet1/0/6 Table 5 Output description Field Member of group Member of the manual port group display storm-constrain Any view display storm-constrain [ broadcast multicast unicast ] [ interface interface-type interface-number ] [ { begin exclude include } regular-expression ] 1: Monitor level broadcast: Displays broadcast storm control settings and statistics. multicast: Displays multicast storm control settings and statistics. unicast: Displays unicast storm control settings and statistics. interface interface-type interface-number: Specifies an interface by its type and number. : Filters command output by specifying a regular expression. For more information about regular expressions, see the Fundamentals Configuration Guide. 13

21 begin: Displays the first line that matches the specified regular expression and all lines that follow. exclude: Displays the lines that do not match the specified regular expression. include: Displays all lines that match the specified regular expression. regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters. Use the display storm-constrain command to display storm control settings and statistics. If you specify no argument or keyword, this command displays all storm control settings on all storm control-enabled interfaces. # Display the storm control settings on all storm control-enabled ports. <Sysname> display storm-constrain Abbreviation: BC - broadcast; MC - multicast; UC - unicast Flow Statistic Interval: 5(second) PortName Type LowerLimit UpperLimit CtrMode Status Trap Log SwiNum Unit Eth1/0/1 BC N/A normal on on 0 pps Table 6 Output description Field Flow Statistic Interval PortName Type LowerLimit UpperLimit CtrMode Status Trap Log SwiNum The traffic polling interval of the storm control module. Abbreviated port name. Type of traffic subjected to storm control. Options include broadcast, multicast and unknown unicast. Lower storm control threshold, in pps, kbps, or percentage. Upper storm control threshold, in pps, kbps, or percentage. Protective action to take on the port when the upper threshold is reached, which can be block or shutdown. If you have not configured any protective action, N/A is displayed. Packet forwarding status: normal The port is forwarding traffic normally. control The port is in controlled mode (the actual mode depends on the CtrMode setting, which may be block or shutdown). Status of the storm control threshold event trap switch: on The port sends threshold event traps. off The port does not send threshold event traps. Status of the storm control threshold event log switch: on The port sends threshold event log messages. off The port does not send threshold event log messages. Number of times the forwarding state of the interface changes. When the Swi-num count reaches 65535, it resets automatically. 14

22 duplex duplex { auto full half } undo duplex Ethernet interface view auto: Sets the interface to operate in auto-negotiation mode. full: Sets the interface to operate in full duplex mode. half: Sets the interface to operate in half-duplex mode. This keyword is not available for the fiber port of an SFP port and the copper port of an Ethernet port whose port rate is configured as 1000 Mbps. Use the duplex command to set the duplex mode for an Ethernet interface. Use the undo duplex command to restore the default duplex mode of the Ethernet interface. By default, the Ethernet interfaces operate in auto-negotiation mode. Related commands: speed. # Configure interface Ethernet 1/0/1 to operate in full-duplex mode. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] duplex full flow-control flow-control undo flow-control Ethernet interface view None Use the flow-control command to enable flow control on an Ethernet interface. Use the undo flow-control command to disable flow control on the Ethernet interface. 15

23 By default, flow control on an Ethernet interface is disabled. With the flow-control command configured, an interface can both send and receive flow control frames in the following conditions: When congested, the interface sends a flow control frame to its peer. Upon receiving a flow control frame from the peer, the interface suspends sending packets. To implement flow control on a link, enable flow control at both ends of the link. # Enable flow control on interface Ethernet 1/0/1. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] flow-control flow-interval flow-interval interval undo flow-interval Ethernet interface view interval: Sets a statistics polling interval, in seconds. It ranges from 5 to 300, defaults to 300, and must be a multiple of 5. Use the flow-interval command to set the statistics polling interval for an interface. Use the undo flow-interval command to restore the default. # Set the statistics polling interval to 100 seconds on interface Ethernet 1/0/1. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] flow-interval 100 group-member group-member interface-list undo group-member interface-list Port group view 16

24 interface-list: Specifies an Ethernet interface list, in the format of interface-type interface-number [ to interface-type interface-number ] &<1-10>, where &<1-10> indicates that you can specify up to 10 ports or port ranges. Use the group-member command to assign Ethernet interfaces to a port group. Use the undo group-member command to remove Ethernet interfaces from the port group. By default, a port group does not contain any member port. If you use the group-member interface-type interface-start-number to interface-type interface-end-number command to add multiple ports in batch to the specified port group, make sure that the interface-end-number argument must be greater than the interface-start-number argument. interface # Assign Ethernet interface Ethernet 1/0/1 to port group group1. [Sysname] port-group manual group1 [Sysname-port-group-manual-group1] group-member Ethernet 1/0/1 interface interface-type interface-number System view interface-type: Specifies and interface type. interface-number: Specifies an interface number. Use the interface command to enter interface view. # Enter view of interface Ethernet 1/0/1. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] 17

25 jumboframe enable jumboframe enable undo jumboframe enable System view None Use the jumboframe enable command to enable jumbo frame support, which allows jumbo frames within 2048 bytes to pass through all Ethernet interfaces. Use the undo jumboframe enable command to disable jumbo frame support (prevent frames longer than 1536 bytes to pass through all Ethernet interfaces). By default, jumbo frame support is enabled and jumbo frames with 2048 bytes can pass through all Ethernet interfaces. # Enable jumbo frames within 2048 bytes to pass through all Ethernet interfaces. [Sysname] jumboframe enable link-delay link-delay delay-time undo link-delay Ethernet interface view delay-time: Sets a link down suppression interval, ranging from 2 to 10 seconds. Use the link-delay command to enable an Ethernet port to suppress link down events. When the physical link of the port goes down, the port suppresses the link down event and starts a timer. When the timer expires, the physical layer reports the event to the upper layers. Use the undo link-delay command to restore the default. 18

26 By default, link down suppression is disabled. Ethernet ports report link down events to the upper layers without delay. NOTE: The link-delay mode up command and the link-delay command are mutually exclusive with each other on the current port. When both commands are configured on the port, the one that is configured earlier is disabled. Link down suppression setting does not take effect on administratively down events. When you shut down the port with the shutdown command, the port reports the event without delay. Do not use this command on ports that are not enabled with MSTP, or Smart Link. # Enable link down suppression on port Ethernet 1/0/1, setting the suppression interval to 8 seconds. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] link-delay 8 link-delay mode up link-delay delay-time mode up undo link-delay Ethernet interface view delay-time: Sets a link up suppression interval, in seconds. The value range is 2 to 10. Use the link-delay delay-time mode up command to enable an Ethernet port to suppress link up events. When the physical link of the port comes up, the port suppresses the link up event and starts a timer. When the timer expires, the physical layer reports the event to the upper layers. Use the undo link-delay command to restore the default. By default, link up suppression is disabled. Ethernet ports report link up events to the upper layers without delay. NOTE: The link-delay mode up command and the link-delay command supersedes each other. The command that is configured last takes effect. Link up suppression setting does not take effect on administratively up events. When you bring up the port with the undo shutdown command, the port reports the event without delay. HP does not recommend that you use this command on ports that are not enabled with MSTP or Smart Link. 19

27 loopback # Enable link up suppression on port Ethernet 1/0/1, setting the suppression interval to 10 seconds. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] link-delay 10 mode up loopback { external internal } Ethernet interface view external: Enables external loopback testing to test all on-chip functions related to Ethernet ports. internal: Enables internal loopback testing to test hardware of Ethernet ports. Use the loopback command to perform loopback testing. NOTE: You cannot perform internal nor external loopback testing on an administratively down (ADM DOWN) port. On a physically down (DOWN) port, you can perform only internal loopback testing. During loopback testing, the speed, duplex, mdi, and shutdown commands are not available. In addition, the port is operating in full duplex mode, regardless of its duplex configuration. After loopback testing is disabled, the duplex configuration of the port restores. Loopback testing is a one-time operation, and is not recorded in the configuration file. # Enable internal loopback testing on interface Ethernet 1/0/1. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] loopback internal Loop internal succeeded! loopback-detection action loopback-detection action { no-learning shutdown } undo loopback-detection action Ethernet interface view, port group view 20

28 no-learning: Disables MAC address learning on the interface. Support for this keyword varies with switch models. shutdown: Shuts down the Ethernet interface. To bring up the interface again, use the undo shutdown command. Support for this keyword varies with switch models. Use the loopback-detection action command to configure the action for loop protection on Ethernet interfaces. Use the undo loopback-detection action command to restore the default, which varies with switch models. By default, a looped interface does not receive or send packets. Configure Ethernet interfaces one by one in Ethernet interface view or in bulk in port group view. # Configure the access port Ethernet 1/0/1 to shut down when a loop is detected. [Sysname] loopback-detection enable [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] loopback-detection enable [Sysname-Ethernet1/0/1] loopback-detection action shutdown # Configure the trunk port Ethernet 1/0/2 to shut down when a loop is detected. [Sysname] loopback-detection enable [Sysname] interface ethernet 1/0/2 [Sysname-Ethernet1/0/2] port link-type trunk [Sysname-Ethernet1/0/2] loopback-detection enable [Sysname-Ethernet1/0/2] loopback-detection control enable [Sysname-Ethernet1/0/2] loopback-detection action shutdown loopback-detection control enable loopback-detection control enable undo loopback-detection control enable Ethernet interface view, port group view None 21

29 Use the loopback-detection control enable command to enable loopback detection control on trunk or hybrid ports. Use the undo loopback-detection control enable command to restore the default. By default, loopback detection control is disabled on trunk and hybrid ports. When a hybrid or trunk port detects a loop condition, it sends traps, regardless of whether loopback detection control is enabled or not. However, only a trunk or hybrid port with loopback detection control enabled will drop all incoming packets on the port while normally forwarding outgoing packets on it. At the same time, the switch sends trap messages to the terminal, and deletes the MAC address entries of the port. This command is not applicable to access ports. # Configure interface Ethernet 1/0/1 as a trunk port and enable loopback detection control on it. [Sysname] loopback-detection enable [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] port link-type trunk [Sysname-Ethernet1/0/1] loopback-detection enable [Sysname-Ethernet1/0/1] loopback-detection control enable loopback-detection enable loopback-detection enable undo loopback-detection enable System view, Ethernet interface view, port group view None Use the loopback-detection enable command to enable loopback detection globally in system view or on ports in Ethernet interface or port group view. To use loopback detection on an Ethernet port, enable the function both globally and on the port. Use the undo loopback-detection enable command to disable loopback detection globally or on ports. The undo loopback-detection enable command in system view disables loopback detection on all ports. By default, loopback detection is disabled on all Ethernet interfaces. On detecting a loop on a port, the switch takes actions depending on the port type (access, trunk, or hybrid) following these rules: 22

30 When detecting a loop on an access port, the switch puts the port in control mode. In this mode, the port drops the incoming packets and forwards the outgoing packets. At the same time, the switch sends trap messages to the terminal, and deletes the MAC address entries of the port. When detecting a loop on a trunk port or a hybrid port, the switch sends a trap message to the terminal. If loopback detection control is enabled on the port, the switch places the port in control mode. In this mode, the port drops all incoming packets and forwards outgoing packets. At the same time, the switch sends trap messages to the terminal, and deletes the MAC address entries of the port. Related commands: loopback-detection control enable. # Enable loopback detection on interface Ethernet 1/0/1. [Sysname] loopback-detection enable [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] loopback-detection enable loopback-detection interval-time loopback-detection interval-time time undo loopback-detection interval-time System view time: Sets the loopback detection interval in seconds, ranging from 5 to 300. Use the loopback-detection interval-time command to set the loopback detection interval. Use the undo loopback-detection interval-time command to restore the default. The default loopback detection interval is 30 seconds. Related commands: display loopback-detection. # Set the loopback detection interval to 10 seconds. [Sysname] loopback-detection interval-time 10 loopback-detection per-vlan enable loopback-detection per-vlan enable undo loopback-detection per-vlan enable 23

31 Ethernet interface view, port group view None Use the loopback-detection per-vlan enable command to enable loopback detection in each VLAN on trunk or hybrid ports. Use the undo loopback-detection per-vlan enable command to disable loopback detection in all but the port VLAN (PVID) on trunk or hybrid ports. By default, a trunk port or hybrid port performs loopback detection only in its PVID. The loopback-detection per-vlan enable command is not applicable to access ports. mdi # Configure interface Ethernet 1/0/1 as a trunk port, and enable loopback detection in all VLANs on it. [Sysname] loopback-detection enable [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] loopback-detection enable [Sysname-Ethernet1/0/1] port link-type trunk [Sysname-Ethernet1/0/1] loopback-detection per-vlan enable mdi { across auto normal } undo mdi Ethernet interface view across: Sets the MDI mode to across. In this mode, pins 1 and 2 of the port are receive pins, and pins 3 and 6 are transmit pins. auto: Sets the MDI mode to auto. In this mode, the port negotiates pin roles with its peer. normal: Sets the MDI mode to normal. In normal mode, pins 1 and 2 of the port are transmit pins, and pins 3 and 6 are receive pins. Use the mdi command to configure the MDI mode of a copper Ethernet interface. 24

32 Use the undo mdi command to restore the default. By default, Ethernet interfaces operate in auto MDI mode. NOTE: This command is not applicable to fiber ports. # Configure interface Ethernet 1/0/1 to operate in across MDI mode. [Sysname] interface ethernet 1/0/1 [Sysname-Ethernet1/0/1] mdi across multicast-suppression multicast-suppression { ratio kbps max-kbps } undo multicast-suppression Ethernet interface view, port group view ratio: Sets the multicast suppression threshold as a percentage of the port transmission capability, ranging from 1 to 100. The smaller the percentage, the less multicast traffic is allowed to pass through. kbps max-bps: Sets the multicast suppression threshold in kbps to limit the number of kilobits of broadcast traffic passing through the Ethernet port per second. For a 100 Mbps port, the value range is 1 to For a 1000 Mbps port, the value range is 1 to Use the multicast-suppression command to set the multicast suppression threshold on an Ethernet interface in interface view or a group of Ethernet interfaces in port group view. Use the undo multicast-suppression command to restore the default. By default, Ethernet interfaces do not suppress multicast traffic. If you execute this command in Ethernet interface view, the configurations take effect only on the current interface. If you execute this command in port group view, the configurations take effect on all ports in the port group. When multicast traffic exceeds the threshold you configure, the system discards multicast packets until the multicast traffic drops below the threshold. 25