EtherChannel, Neighbor View, and Trap Receiver Table

Transcription

1 CHAPTER 9 EtherChannel, Neighbor View, and Trap Receiver Table This chapter descibes the configuration procedures for the EtherChannel, Neighbor View, and Trap Receiver Table applications. To start the EtherChannel application, select Tools>EtherChannel Configuration. To start the Neighbor View application, select Tools>Neighbor View. To start the Trap Receiver Table application, select the device, select Configure>device, and select the Trap Receiver Table category. Note Where windows display optional fields, you can either enter a value or leave the field blank and the device automatically generates the value. EtherChannel Note EtherChannel is not supported on Windows 95. EtherChannel is a high-bandwidth connection between two Catalyst 5000 series or 3000 series switches. An EtherChannel is a grouping of two switch devices that behave as a single switch. EtherChannel, Neighbor View, and Trap Receiver Table 9-1

2 Catalyst 3000 Series Switches Each Catalyst 3000 series switch EtherChannel is comprised of two to seven ports, to provide a bandwidth from 20 to 80 Mbps in half-duplex mode, or from 40 to 160 Mbps in full-duplex mode. You can create an EtherChannel only between two Catalyst 3000 series switches and not between a Catalyst 3000 series switch and a workstation. EtherChannel Port Combinations Ethernet channels can be created using the ports within the same group (for example VLAN). To add an EtherChannel between two Catalyst devices, you specify the ports that you will connect. The Catalyst treats the port with the lowest number as the primary port. For example, if an EtherChannel consists of ports 8, 11, and 13, the primary port is 8. Broadcast, multicast, and unknown destination packets are forwarded first to the primary port in an EtherChannel. The primary ports of both EtherChannels must be connected to each other. For example, if an EtherChannel links ports 8, 11, and 13 of one device and ports 3, 6, and 9 of another device, ports 8 and 3 must be connected to each other. Configure Ethernet Channel When you click Configure from the Ethernet Channelling category, the Configure EtherChannel window is displayed (Figure 9-1). The Configure EtherChannel window allows you to perform the following: Add or remove ports from EtherChannels Assign a color to each channel Note For additional information regarding the fields within the windows, click Help to access the CiscoView Help screens. 9-2 Using CiscoView with Catalyst and LightStream Switches

3 Figure 9-1 Configure EtherChannel The following action buttons may be available: Selection To select or deselect all the ports in a selected EtherChannel entry at one time, click Selection. (See Configure Ethernet Channel for more information.) Hide To clear the channel color assignment, select the channel and click Hide. Evacuate To clear the channel color assignment, select the channel and click Evacuate. EtherChannel, Neighbor View, and Trap Receiver Table 9-3

4 Figure 9-2 Modify Selection Catalyst 5000 Series Switches Note The EtherChannel feature applies only to Catalyst 5000 series switches configured with WS-X5201 or WS-X5203 modules. Each Catalyst 5000 series switch EtherChannel is comprised of two to seven ports, to provide a bidirectional bandwidth of up to 800 Mbps. The module ports are divided into three groups: Group 1 ports 1 to 4 Group 2 ports 5 to 8 Group 3 ports 9 to 12 EtherChannel Port Combinations Ethernet channels can be created using the ports within the same group, and with the following combinations only: No ports channelled The first two ports in each group (ports 1 and 2, ports 5 and 6, or ports 9 and 10) form a channel, but the other ports in the group (ports 3 and 4, ports 7 and 8, or ports 11 and 12) are not channelled 9-4 Using CiscoView with Catalyst and LightStream Switches

5 The first two ports in the group (ports 1 and 2, ports 5 and 6, or ports 9 and 10) form one channel, and the other ports in the group (ports 3 and 4, ports 7 and 8, or ports 11 and 12) form the other channel All four ports in each group (ports 1 to 4, ports 5 to 8, or ports 9 to 12) are channelled together For example, ports 7 and 8 cannot be channelled without ports 5 and 6, and ports 1 and 2 cannot be channelled with port 3 alone. Configure Ethernet Channels When you click Configure from the Ethernet Channelling category, the Configure Ethernet Channel window opens. This window allows you to designate channelled ports. The information is shown in the form of a table and each entry consists of the following: Card number lists the modules with EtherChannel Group number lists the ports configured for EtherChannel Port configuration of each group is through pop-up menus. There are four possible combinations listed as choices in the pop-up menus, including the following: no no port is channelled in this group at all (1,2) creates an EtherChannel using ports 1 and 2; ports 3 and 4 are not channelled (1,2) (3,4) creates two EtherChannels: one channel using ports 1 and 2, and one channel using ports 3 and 4 (1,2,3,4) creates an EtherChannel using ports 1 to 4 EtherChannel, Neighbor View, and Trap Receiver Table 9-5

6 Configuration Considerations To ensure optimum EtherChannel functionality, you must consider the following items: Half-Duplex and Full-Duplex. A single EtherChannel can include a combination of half-duplex and full-duplex connections for example, an EtherChannel containing three ports can have two full-duplex and one half-duplex connection. However, each pair of interconnected ports must both be either half duplex or full duplex. Statistics reporting. Statistics for the EtherChannel are displayed for individual ports, not for the EtherChannel as a whole. Station addresses are distributed among the ports in the EtherChannel. Address Filtering. Address filters are automatically added to every port in an EtherChannel. EtherChannel software learns addresses differently than regular ports, as follows: New source address. When a packet arrives at an EtherChannel port with an unknown source address, the system module creates an entry in the master table and the port table for the EtherChannel. The system module assigns the primary port in the EtherChannel as the port of entry. For additional source addresses, the system module assigns ports of entries alternately to other ports in the EtherChannel. When all ports in the EtherChannel have at least one address assigned, the system module starts assigning from the primary port again. Note When using EtherChannel, set the Address Aging Time (System Information Menu) to 60 minutes or more. More frequent aging is undesirable because the time it takes to remove inactive addresses may affect Catalyst 3000 series switch performance. New destination address. An unknown destination address packet is sent out the primary ports of the EtherChannel, but entries are not made in port tables until a reply packet comes back. Entries in port tables depend upon the destination. Broadcast and multicast packets. Broadcast and multicast packets go to the primary port of each EtherChannel. 9-6 Using CiscoView with Catalyst and LightStream Switches

7 Link Failure. If one link in an EtherChannel fails, a trap is sent and the entire EtherChannel is disabled. Port configuration for all ports that belong to a channel are the same; this applies to both ends of the channel, for example, duplex mode (full duplex delivers high bandwidth). All the ports in one channel must be assigned to the same VLAN. Ports are automatically (no user intervention) disabled when channelling is turned off. This prevents broadcast storms from occurring when spanning tree is disabled, and there are loops in connection. Port security feature is disabled on the channelled ports. If port security is enabled for a channelled port, it will shutdown when it receives packets whose source address does not match the secure address of the port. The ports in a channel are not configured as dynamic VLAN ports. Configuration Procedures This section contains configuration procedures for EtherChannel connections. Catalyst 3000 Series Switches This section contains procedures for EtherChannel connections for Catalyst 3000 series switches. To configure the EtherChannel connections, perform the following steps: Step 1 Step 2 Enable channelling on the ports. Ensure that the following configuration applies to all ports belonging to a channel, at both ends of the channel: Port security is disabled Same VLAN Same port duplex Same port speed EtherChannel, Neighbor View, and Trap Receiver Table 9-7

8 Step 3 Step 4 Step 5 All ports are enabled A loop link does not exist (on either normal Ethernet or EtherChannel) in one VLAN Select Tools >EtherChannel Configuration. This brings up the Configure EtherChannel window. To set up an EtherChannel, perform the following: (a) (b) (c) (d) Select the channel and switch number from the list, select the ports you want in the channel in the CiscoView window, and drag them (holding down the middle mouse button for UNIX systems or holding the left mouse button for PC systems) onto the channel list. Repeat for an equal number of ports on another switch. Drag those ports (holding down the middle mouse button for UNIX systems or holding the left mouse button for PC systems) to the channel with the same number on that switch. Connect the two switches with the appropriate cables on the selected ports. To configure the EtherChannel, perform the following as appropriate: (a) (b) (c) (d) (e) To highlight ports of a channel in color, select a channel and the color desired. To clear the color assignment, select the channel and click Hide. To add a port to a channel, select a channel from the list (holding down the middle mouse button for UNIX systems or holding the left mouse button for PC systems) and drag the port onto the channel list. To add all the ports in the channel, select the channel, and then click Selection. In the Modify Selection box, select Add this channel s ports to the selection and click OK. To clear a channel assignment, select the channel from the list and click Evacuate. To remove all the ports in a channel from selection, select the channel, and then click Selection. In the Modify Selection box, select Delete this channel s ports and click OK. 9-8 Using CiscoView with Catalyst and LightStream Switches

9 Catalyst 5000 Series Switches This section contains procedures for EtherChannel connections for Catalyst 5000 series switches. To configure the EtherChannel connections, perform the following steps: Step 1 Step 2 Enable channelling on the ports. Disable the spanning tree on the channelled ports of the VLAN. Note If spanning tree is enabled, some of the channelled ports will be placed in blocking and forwarding states to prevent loops in connection. This is not appropriate for channelled ports. Step 3 Step 4 Step 5 Ensure that the following configuration applies to all ports belonging to a channel, at both ends of the channel: Port security is disabled Broadcast suppression is set by percentage, not by pps The same trunk mode exists on both ends No dynamic VLAN Same VLAN Same port duplex Same port speed All ports are enabled Corresponding spanning tree is disabled A loop link does not exist (on either normal Ethernet or EtherChannel) in one VLAN Select Tools>EtherChannel Configuration. This brings up the Ethernet Channel Configuration window. Click Show Channel to display frames around same Ethernet Channel ports, or Hide Channel to hide the frames; default is Show Channel. EtherChannel, Neighbor View, and Trap Receiver Table 9-9

10 Neighbor View Step 6 Step 7 Step 8 Click Configure to configure EtherChannel. This brings up the Ethernet Channel Configuration window. Click the right mouse button in the appropriate Card and Group field to display the pop-up window, and select the port combinations as appropriate. Click Modify to commit your input and exit the window. Neighbor View This section contains the descriptions and configuration procedures for the Neighbor View application. Neighbor View Description Neighbor View provides a way to display the Cisco Discovery Protocol (CDP) cache table as part of device configuration. This feature does not allow you to continuously monitor the CDP cache information. The values are retrieved only once and not updated periodically. To see the update(s), click Refresh. To invoke Neighbor View, select Tools>Neighbor View. This brings up the Neighbor View window (Figure 9-3). Note For additional information regarding the fields within the windows, click Help to access the CiscoView Help screens Using CiscoView with Catalyst and LightStream Switches

11 Neighbor View Figure 9-3 Neighbor View The following action buttons may be available: Sort buttons Three buttons used to sort the neighbor information according to the following: Sort by Port lists the information numerically port Sort by IP Address lists the information numerically by IP address Sort by Platform lists the information alphabetically by platform Note When using the Sort buttons, the information is displayed in three columns; the column order does not change when the sort order changes, just the information is rearranged. Refresh To update the neighbor information, click Refresh. Detail When any one entry is selected, click Detail to display the complete table entry of the particular entry in the CDP cache. Click Cancel to exit the window. EtherChannel, Neighbor View, and Trap Receiver Table 9-11

12 Neighbor View Configure Click Configure to bring up the CDP Parameter Configuration window. The CDP Parameter Configuration window allows configuration of the local portspecific CDP parameters. (Refer to the section, CDP Parameter Configuration Procedures, for more information.) CDP Parameter Configuration Procedures The CDP Parameter Configuration window (Figure 9-4) allows you to either apply the parameter values to any one local port by selecting an entry, or apply the parameter values to all the ports. Figure 9-4 CDP Parameter Configuration To configure the local port-specific CDP parameters, perform the following steps: Step 1 Step 2 Select Tools>Neighbor View. Select a port, and then perform one of the following: (a) (b) Click Modify Selected Port if only a specific port is to be configured. Click Modify All Ports if all ports are to be configured the same Using CiscoView with Catalyst and LightStream Switches

13 Trap Receiver Table Step 3 Within the displayed CDP Configuration window, perform one of the following: (a) (b) Select the state and enter the interval (in seconds) at which CDP messages are generated on this interface. Click OK to commit the changes and exit the window. Click Default to return to the default values, and then click Cancel to exit the window. Trap Receiver Table This section covers only the Trap Receiver Table application for the Catalyst 3000 series switches; the Trap Receiver Table application for the Catalyst 5000 series switches will be covered in a later release. To invoke the Trap Receiver Table, select Tools>Trap Receiver Table. Trap Receiver Table Description The Trap Receiver Table window (Figure 9-5) contains information about the Simple Network Management Protocol (SNMP) managers on the network that are set up to receive traps, and contains action buttons. Note For additional information regarding the fields within the windows, click Help to access the CiscoView Help screens. EtherChannel, Neighbor View, and Trap Receiver Table 9-13

14 Trap Receiver Table Figure 9-5 Trap Receiver Table The action buttons are as follows: Configure To modify the characteristics of the trap receiver index for the selected entry, click Configure and modify the parameters as desired. Click Modify to commit the input(s), then click Cancel to exit the window. Create To create a new trap receiver entry, click Create and configure the parameters as desired. Click Create to commit the input(s), then click Cancel to exit the window. Delete To remove an entry from the table, select the entry to be deleted and click Delete in the Trap Receiver Table window. A confirmation window opens. Click Yes to delete the row and exit the confirmation window, or No to cancel and exit the confirmation window Using CiscoView with Catalyst and LightStream Switches