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- Kristin Watkins
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12 vmotion-a vmotion-b VMM-Pool-B_
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19 Uplink-Set-A Uplink-Set-B
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21 ACI-DC
22 Standard Aggregation L3 Switch Configuration for existing Layer 2 : Nexus 6K-01 switch is used as upstream Agg L3 switch to provide gateway addresses for all the EPG VLANs used in this solution and routed. These VLANs are configured on this L3 switch as SVI for its network IP segment with HSRP and interface-vlan feature enabled to provide default gateway and routing. As a result, all network reachability between EPGs within ACI fabric or EPG to external devices outside ACI fabric must be routed at Agg L3 switch. (NX-6K-01). The following Fig 23 is the diagram for leaf node and upstream device connection. A detail switch configuration relates to this solution can be found in Appendix A
23 SOLUTION SPECIFIC DESIGN CONSIDERATIONS The above diagram (Fig 24) shows the connections related to ACI vsphere VMM integration. The solution is based on a vsphere vcenter VMM domain integration with the VMware virtual environment and extend the EPG out of the ACI Fabric to traditional network layer 2 environment (where VLANs are used). In this design, ACI dynamically assigns VLAN ID from the pool to the EPG portgroup and rely on the LLDP tagging feature enabled in HPE OneView for the VCs to determine the location of the workload VMs so that the policies can be applied and enforced. ACI statically assign a leaf port (along with a VLAN ID) to an EPG. (Static Binding in ACI EPG configuration and will be discussed in later s section) so all the traffic received on the leaf port with the configured VLAN ID will be mapped to the EPG and the configured policies for the EPG can be enforced. Since this design the VLANs Gateways address lives outside ACI Fabric (vs. Cisco ACI subnets & define pervasive gateway inside fabric), there are some limitations, design considerations, and configuration requirements: 1. Inter VLAN routing takes place outside the ACI fabric. This simulates a brownfield ACI implementation scenario and means that ACI contracts can t control the network traffic between VLANs. 2. Each EPG is created for each VLAN that is outside of the ACI fabric 3. Each EPG must be associated to the physical domain that contains the VLAN IDs used outside of ACI 4. Each EPG should be in its own dedicated Bridge Domain 5. The Bridge Domain flooding feature must be enabled to broadcast traffic to the external gateways. ACI CONFIGURATION STEPS
24 L12 1 -P5 2 -vpc 3 -SP 4 L1-P3-PG Enable_CDP
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26 VPool L1-P3-VPool L1-P3-PD L1-P3- L1-P3-AEP OV-VC OV-DVS ACI-DC
27 OV-DVS ACI-DC ACI-DC
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29 P3-PG L1-P3-AEP eth 1/3 L1-P3-SP L1-P3-IP L1- L1-P3-AEP Leaf node 1# show int brie Port VRF Status IP Address Speed MTU mgmt0 -- up Ethernet VLAN Type Mode Status Reason Speed Port ch# Eth1/1 20 eth trunk up none 10G(D) -- Eth1/2 0 eth trunk up none 10G(D) -- Eth1/3 0 eth trunk up none 10G(D) --
30 OV-VMM-AEP L12-P5-vPC-PG L12-P5-vPC-SP L12-P5-vPC-IP L12-P5-vPC-PG OV-VMM-AEP L12-P5-vPC-PG L12-P6-vPC-PG OV-VMM-AEP e1/5 & 6 Leaf node1# show interface brief Port VRF Status IP Address Speed MTU mgmt0 -- up
31 Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # Eth1/5 0 eth trunk up none 10G(D) 7 Eth1/6 0 eth trunk up none 10G(D) 8 Leaf node 2# show inter brie Port VRF Status IP Address Speed MTU mgmt0 -- up Ethernet VLAN Type Mode Status Reason Speed Port Interface Ch # Eth1/5 0 eth trunk up none 10G(D) 7 Eth1/6 0 eth trunk up none 10G(D) 8 HPE
32 HPE-VRF
33 App-BD
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35 NETWORK TRAFFIC ENDPOINTS GROUPS (EPGS) BRIDGE DOMAIN (BD) VLAN (TRADITIONAL NETWORK) /24 Ext-mgmt Ext-mgmt - BD VLAN /24 vmotion vmotion - BD VLAN /24 Web Web - BD VLAN /24 App App - BD VLAN /24 DB DB - BD VLAN 145
36 App
37 HPE HPE-ANP HPE portgroup. syncs with vcenter to create a matching DVS
38 Ext-mgmt Ext-mgmt vmotion Web App DB Ext-mgmt
39 Ext-mgmt EPG-VLAN
40 C:\Users>ping Pinging with 32 bytes of data: Reply from : bytes=32 time=110ms TTL=61 Reply from : bytes=32 time=38ms TTL=61
41 App Web DB) App App
42 HPE HPE-ANP-App DB, Web DB
43 HPE HPE-ANP-xxx
44 HPE HPE-ANP-App. HPE HPE-ANP-App
45 VM App1 HPE HPE-ANP-App EPG VLAN HPE HPE-ANP-App VM App1 VM App1 DIA-N6K-01# :00: ed Vlan144 DIA-N6K-01# show mac address-table in 21ed * ed dynamic 20 Eth1/3 C:\Users\Administrator> Pinging with 32 bytes of data: Reply from : bytes=32 time=141ms TTL=125 Reply from : bytes=32 time=381ms TTL=125 Reply from : bytes=32 time=37ms TTL=125 Reply from : bytes=32 time=41ms TTL=125 Ping statistics for : Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 37ms, Maximum = 381ms, Average = 150ms
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47 Following are a list of references and links.
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49 CONFIGURATION ITEMS CONFIGURATION NOTES VLAN Pool (VMM) OV-VMM-Vpool The dynamical VLAN pool for VMM domain. VLAN VMM Domains OV-DVS Name of VMM domain is name of VDS in vcenter Associated AEP OV-VMM-AEP OV_VMM-AEP is created during domain creation, associated with an interface in interface policy group creation or modification. Interface Profile L12-P5-vPC-IP L12-P6-vPC-IP L12-P5-vPC-IP leaf 1/2.e1/5 associated with L12-P5-vPC-SP. L12-P6-vPC-IP leaf 1/2, e1/6 - associated with L12-P5-vPC-SP Interface policy group L12-P5-vPC-PG L12-P6-vPC-PG define interface policy and associate AEP for interface (s), associated to OV-VMM-AEP to enable VMM traffic Switch Profiles L12 Leaf node 1 & 2, P# - refer to the port position on a switch the type of connection Access port, PO or vpc. EPGs (ACI) Leaf node 1 Internal VLAN Leaf Node 2 Internal VLAN VxLAN ID Static Enc VLAN VMM Domain Agg.SW (Ext.) Interfaces EPG-Ext-mgmt VLAN 50 VLAN 18 VLAN 140 N/A VLAN 140 E1/3, E1/5-6, Po7-8 EPG-Ext-mgmt BD VLAN 49 VLAN E1/3, E1/5-6, Po7-8 vmotion VLAN 23 VLAN 56 VLAN 141 N/A VLAN 141 E1/3,E1/5-6, Po7-8 vmotion-bd VLAN 43 VLAB E1/3, E1/5-6, Po7-8 Web (VMM) VLAN 17 VLAN 36 VLAN 143 VLAN 1050 E1/5-6, Po7-8 Web-BD VLAN 47 VLAN E1/3, E1/5-6, Po7-8 Web (PD) VLAN 48 VLAN 143 VLAN 143 E1/3 App (VMM) VLAN 15 VLAN 38 VLAN 144 VLAN 1044 E1/5-6, Po7-8 App-BD VLAN 41 VLAN E1/3, E1/5-6, Po7-8 App-(PD) VLAN 42 VLAN 144 VLAN 144 E1/3 DB (VMM) VLAN 18 VLAN 40 VLAN 145 VLAN 1041 E1/5-6, Po7-8
50 EPGs (ACI) Leaf node 1 Internal VLAN Leaf Node 2 Internal VLAN VxLAN ID Static Enc VLAN VMM Domain Agg.SW (Ext.) Interfaces DB-BD VLAN 45 VLAN E1/3, E1/5-6, Po7-8 DB (PD) VLAN 46 VLAN 145 VLAN 145 E1/3
51 Agg-L3-SW# show feature inc enabled hsrp_engine 1 enabled interface-vlan 1 enabled lacp 1 enabled lldp 1 enabled vpc 1 enabled vlan 140 name n24-VLAN140 vlan 141 name n24-VLAN141 vlan 142 name n24-VLAN142 vlan 143 name n24-VLAN143 vlan 144 name n24-VLAN144 vlan 145 name n24-Vlan145 interface Vlan140 no shutdown no ip redirects ip address /24 ip ospf passive-interface ip router ospf core area hsrp 140 preempt priority 110 ip ip dhcp relay address interface Vlan141 no shutdown no ip redirects ip address /24 ip ospf passive-interface hsrp 141 preempt priority 110 ip interface Vlan142 no shutdown no ip redirects ip address /24 ip ospf passive-interface hsrp 142 preempt priority 110 ip interface Vlan143
52 no shutdown no ip redirects ip address /24 ip ospf passive-interface ip router ospf core area hsrp 143 preempt priority 110 ip ip dhcp relay address interface Vlan144 no shutdown no ip redirects ip address /24 ip ospf passive-interface ip router ospf core area hsrp 144 preempt priority 110 ip ip dhcp relay address interface Vlan145 no shutdown no ip redirects ip address /24 ip ospf passive-interface ip router ospf core area hsrp 145 preempt priority 110 ip ip dhcp relay address interface Ethernet1/3 description To ACI-DIA P3 (Leaf1) switchport mode trunk
53 Leaf1# show endpoint detail VLAN/ Encap MAC Address MAC/ Interface Endpoint Group Domain VLAN IP Address IP Info Info vlan a.6aad.167c L eth1/3 HPE:HPE-ANP:App HPE:HPE-VRF vlan L eth1/3 42 vlan a.6aad.163c L eth1/3 HPE:HPE-ANP:App HPE:HPE-VRF vlan L eth1/3 42 vlan c07.ac90 L eth1/3 HPE:HPE-ANP:App HPE:HPE-VRF vlan L eth1/3 15 vlan d45b LV po7 HPE:HPE-ANP:App HPE:HPE-VRF vlan LV po7 15 vlan ed LV po8 HPE:HPE-ANP:App HPE:HPE-VRF vlan LV po8 HPE:HPE-VRF vlan L eth1/3 18 vlan b1c6 LV po8 HPE:HPE-ANP:DB HPE:HPE-VRF vlan LV po8 48 vlan a.6aad.167c L eth1/3 HPE:HPE-ANP:Web HPE:HPE-VRF vlan L eth1/3 48 vlan a.6aad.163c L eth1/3 HPE:HPE-ANP:Web HPE:HPE-VRF vlan L eth1/3 48 vlan c07.ac8f L eth1/3 HPE:HPE-ANP:Web HPE:HPE-VRF vlan L eth1/3 Leaf2# show endpoint detail VLAN/ Encap MAC Address MAC/ Interface Endpoint Group Domain VLAN IP Address IP Info Info vlan a LV po7 HPE:HPE-ANP:Web HPE:HPE-VRF vlan LV po7 38 vlan d45b LV po7 HPE:HPE-ANP:App HPE:HPE-VRF vlan LV po7 38 vlan ed LV po8 HPE:HPE-ANP:App HPE:HPE-VRF vlan LV po8 40 vlan b1c6 LV po8 HPE:HPE-ANP:DB HPE:HPE-VRF vlan LV po8 overlay L lo0 overlay L lo2 From the 1 st column, vlan domain, the VLAN ID is the ACI system internal vlan ID. Each internal VLAN ID maps to a data VLAN (Encap VLAN in 2 nd column) and endpoint belong to an EPG. In this example, an endpoint device is a VM with MAC address ed at IP address It belong to HPE:HPE-ANP:App EPG and assigned VLAN 1044 as it s VLAN ID within
54 ACI VMM domain. This VM data traffic is carried by leaf internal VLAN 15 on leaf node 1 and VLAN 38 on leaf node 2 on interface port channel 8. (two members in the Interface port channel 8: interface e1/6 on leaf node 1 and leaf node 2) In addition, Internal VLAN 42 is mapped to VLAN 144 for its gateway learned from interface Eth 1/3. Please note, the system internal VLAN ID is local significant, meaning VLAN ID or VLAN ID range assigned to carrier each data VLAN is different from each individual leaf node. In summation the output of the command is: 1. Mapping Internal VLAN ID and Data VLAN ID (for leaf1 switch) VLAN 15 for VMM Domain data VLAN 1044, and VLAN 38 on leaf 2 switch. 2. For EPG HPE:HPE-ANP:App in ACI will have two related VLANs mappings One for VMM Domain - VLAN 15 (on leaf 1) and VLAN 38 (on leaf2) VLAN 1044 mapping (VLAN 1044 is dynamically assigned when EPG App associates with VMM domain) One for Physical Domain VLAN 42 VLAN 144 mapping (VLAN 144 is statically assigned when EPG App is associated with physical domain and statically bind to interface e1/3 of leaf node 1) 3. Endpoint MAC address, IP address present and learned for VMM Domain interface Port-Channel 8. 2 nd useful command is show vlan extended Show vlan extend command displays internal VLAN ID, EPG, and active VLANs are encapsulated. Leaf1# show vlan extended VLAN Name Status Ports infra:default active Eth1/47, Eth1/48 15 HPE:HPE-ANP:App active Eth1/5, Eth1/6, Po7, Po8 17 HPE:HPE-ANP:Web active Eth1/5, Eth1/6, Po7, Po8 18 HPE:HPE-ANP:DB active Eth1/5, Eth1/6, Po7, Po8 23 HPE:HPE-ANP:vMotion active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 41 HPE:App-BD active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 42 HPE:HPE-ANP:App active Eth1/3 43 HPE:vMotion-BD active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 44 HPE:HPE-ANP:vMotion active Eth1/3 45 HPE:DB-BD active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 46 HPE:HPE-ANP:DB active Eth1/3 47 HPE:Web-BD active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 48 HPE:HPE-ANP:Web active Eth1/3 49 HPE:Ext-mgmt-BD active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 50 HPE:HPE-ANP:Ext-mgmt active Eth1/3, Eth1/5, Eth1/6, Po7,Po8 VLAN Type Vlan-mode Encap enet CE vxlan , vlan enet CE vlan enet CE vlan enet CE vlan enet CE vlan enet CE vlan enet CE vlan enet CE vxlan enet CE vxlan enet CE vxlan enet CE vxlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vxlan
55 46 enet CE vlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vlan-140 Leaf2# show vlan extended VLAN Name Status Ports infra:default active Eth1/46, Eth1/47, Eth1/48 35 HPE:Web-BD active Eth1/5, Eth1/6, Po7, Po8 36 HPE:HPE-ANP:Web active Eth1/5, Eth1/6, Po7, Po8 37 HPE:App-BD active Eth1/5, Eth1/6, Po7, Po8 38 HPE:HPE-ANP:App active Eth1/5, Eth1/6, Po7, Po8 39 HPE:DB-BD active Eth1/5, Eth1/6, Po7, Po8 40 HPE:HPE-ANP:DB active Eth1/5, Eth1/6, Po7, Po8 46 HPE:vMotion-BD active Eth1/5, Eth1/6, Po7, Po8 48 HPE:HPE-ANP:Ext-mgmt active Eth1/5, Eth1/6, Po7, Po8 56 HPE:HPE-ANP:vMotion active Eth1/5, Eth1/6, Po7, Po8 VLAN Type Vlan-mode Encap enet CE vxlan , vlan enet CE vlan enet CE vxlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vlan enet CE vlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vlan enet CE vlan enet CE vxlan enet CE vxlan enet CE vlan enet CE vxlan enet CE vlan-141 ANP:App show endpoint detail HPE:HPE- Use show interface e1/5 switchport to confirm active system internal VLANs on the physical domain or VMM domain, Show interface e1/5 switchport displays allowed internal VLANs on an interface Leaf1# show int e1/5 switchport
56 Name: Ethernet1/5 Switchport: Enabled Switchport Monitor: not-a-span-dest Operational Mode: trunk Access Mode Vlan: 21 (default) Trunking Native Mode VLAN: unknown (default) Trunking VLANs Allowed: 15,17-18,22-23,41,43,45,47,49 (EPG App is encapsulated in vlan 15) FabricPath Topology List Allowed: 0 Administrative private-vlan primary host-association: none Administrative private-vlan secondary host-association: none Administrative private-vlan primary mapping: none Administrative private-vlan secondary mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Leaf1# show int e1/3 switchport Name: Ethernet1/3 Switchport: Enabled Switchport Monitor: not-a-span-dest Operational Mode: trunk Access Mode Vlan: 48 (default) Trunking Native Mode VLAN: unknown (default) Trunking VLANs Allowed: (VLAN 144 is encapsulated in vlan 42) FabricPath Topology List Allowed: 0 Administrative private-vlan primary host-association: none Administrative private-vlan secondary host-association: none Administrative private-vlan primary mapping: none Administrative private-vlan secondary mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none Leaf2# show int e1/5 switchport Name: Ethernet1/5 Switchport: Enabled Switchport Monitor: not-a-span-dest Operational Mode: trunk Access Mode Vlan: 47 (default) Trunking Native Mode VLAN: unknown (default) Trunking VLANs Allowed: 17,35-40,46,48,56 (EPG App is encapsulated in vlan 38) FabricPath Topology List Allowed: 0 Administrative private-vlan primary host-association: none Administrative private-vlan secondary host-association: none Administrative private-vlan primary mapping: none Administrative private-vlan secondary mapping: none Administrative private-vlan trunk native VLAN: none Administrative private-vlan trunk encapsulation: dot1q Administrative private-vlan trunk normal VLANs: none Administrative private-vlan trunk private VLANs: none Operational private-vlan: none
57 From VM/Host: From ACI VMM: From Agg L3 (Gateway device for network): DIA-N6K-01# show ip Arp in :00: ed Vlan144 Gateway device outside ACI learned MAC in VLAN 144. DIA-N6K-01# show mac address-table in 21ed * ed dynamic 20 Eth1/3 MAC learned from interface e1/3 From a device (remote / routed to Data Center LAN) VM App1 reachable from anywhere on the LAN. C:\Users\Administrator>ping Pinging with 32 bytes of data: Reply from : bytes=32 time=141ms TTL=125 Reply from : bytes=32 time=381ms TTL=125 Reply from : bytes=32 time=37ms TTL=125
58 Reply from : bytes=32 time=41ms TTL=125 Ping statistics for : Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 37ms, Maximum = 381ms, Average = 150ms Another useful command is show vpc to see if port-channel membership and VLAN allowed. It will be covered in next section. The below is a table with detailed VLAN mapping derived from summarizing the outputs of the prior commands. L12-P5-vPC-PG Leaf1# show lldp neighbors Device ID Local Intf Hold-time Capability Port ID VC2040F8-7C J Eth1/5 120 X5 VC2040F8-7C K Eth1/6 120 X5 Leaf2# show lld neighbors Device ID Local Intf Hold-time Capability Port ID VC2040F8-7C J Eth1/5 120 X6 VC2040F8-7C K Eth1/6 120 X6
59 From Fig 38, Interconnect section of OneView s display shows VC1 has serial number 7C J while VC2 serial number is 7C K. From the output of the show LLDP neighbor leaf node CLI command, interface eth1/5 on both leaf1 & leaf2 connects to VC1: eth1/5 on leaf node 1 is connected to port X5 on VC1 and eth 1/5 of leaf node 2 is connected to port X6 of VC1. The Same method is used to connect interface eth1/6 on both leaf1 & leaf2 to VC2 - eth1/6 on leaf swich2 to port X5 on VC2 and eth 1/6 of leaf node 2 is connected to port X6 of VC2. VC 1 terminated on the different leaf node but landed on the same interface e1/5 on the leaf node 1 & 2. To confirm vpc is up running and all the data VLANs are allowed on vpc links. Leaf1#show vpc Legend: (*) - local vpc is down, forwarding via vpc peer-link vpc domain id : 120 Peer status : peer adjacency formed ok vpc keep-alive status : Disabled Configuration consistency status : success Per-vlan consistency status : success Type-2 consistency status : success vpc role : secondary Number of vpcs configured : 4 Peer Gateway : Disabled Dual-active excluded VLANs : - Graceful Consistency Check : Enabled Auto-recovery status : Enabled (timeout = 240 seconds) Operational Layer3 Peer : Disabled vpc Peer-link status id Port Status Active vlans up - vpc status id Port Status Consistency Reason Active vlans Po2 up success success 4000
60 690 Po1 up success success Po7 up success success ,1042,1045, Po8 up success success ,1042,1045, Verify vpc 691 connections from APIC GUI as a demonstration. vpc Interface 691 & 692 leaf 1 vpc Interface 691 & 692 leaf 2 Verify and display the details for connection eth1/5 on leaf1 and leaf2 switches.
61 vpc Interfaces (vpc 691) allows physical domain and VMM domain VLANs on the trunked interfaces same for Leaf 1 & 2 From two set of screenshots shows, vpc port channel #691 are used for eth1/5 on both leafs switches and used same policy group. (L12-P5-vPC-PG). These vpc interfaces (eth1/5 on leaf 1 & 2) are trunked (switched mode trunk) and allows the same set of VLANs (VLAN 140,1041, ,1050) to pass through. Aggregated Port-Channel (PO 7) allows leaf internal VLANs on trunked interfaces Different on leaf 1 & leaf 2. Aggregated port-channel 7 interface is running outside of vpc 691 and is assigned a number of VLANs to carry (encapsulate) these data VLANs through the Fabric. As we discussed earlier, these VLANs are assigned by the leaf node and they are internal/locally significant. As these output are shown above, leaf node 1 uses VLAN range 15,17,18,21,41,43,45,47,49,50 versus VLAN range 15-16,18,21,36-37,40-43,46-47 on leaf node 2. Best Practice of vpc connections placement on leaf nodes By connecting uplinks port X5 and X6 of VC1 at the same port on both leaf nodes (eth 1/5), only one switch profile is needed and one L12-P5-vPC-PG policy group can governor behavior of both ports. It simplifies ACI configuration and eases the troubleshooting.
62 From the LACP Interface of eth1/5 interface configuration screen (at the bottom portion of the display) we can confirm both eth 1/5 interfaces are terminated on the same VC1 with system ID 7C J. To summarize, the following diagram showed the detail of port mapping, VLANs active on the different interfaces and policy group assigned to the interface. LLDP Tagging verification This section is to confirm that VLAN IDs are propagated from the ACI infrastructure down to the host and the DVS provides two ways communication. To verify LLDP tagging configurations and that LLDP communication between vsphere host and ACI are end to end: 1. OneView LLDP tagging feature must be supported and option enabled/selected
63 2. ACI vswitch Policy in Attachable Entity Policy view make sure LLDP enabled towards to DVS. To verify LLDP policy click, a pop-up screen comes up and displays named LLDP-Enabled-Bidirectional policy details. 3. vsphere vcenter Server DVS (advanced Edit Settings) - LLDP enabled in Discovery protocol section
64 4. ACI to vsphere host end to end LLDP visibility confirmation at vsphere vcenter, from network, host uplink vmnic0 or vmnic1 connected to the DVS, click information icon to expand detail information window, from All tab or LLDP, At APIC, from VM Network, expand.. Click the information icon next to vmnic0 to expand connection information and Click LLDP tab to see the details. From the screenshot above verified between vsphere virtual distribute switch passing LLDP information and connecting to VC1. Leaf 1# show lldp neighbors interface e1/5 detail
65 Chassis id: 50:65:f3:5e:a5:79 Port id: X5 Local Port id: Eth1/5 Port Description: HP VC FlexFabric-20/40 F8 Module 4.45 X5 System Name: VC2040F8-7C J System Description: HP VC FlexFabric-20/40 F8 Module T00:33:55Z Time remaining: 88 seconds System Capabilities: Enabled Capabilities: Management Address: Vlan ID: not advertised Total entries displayed: 1 The vmnic1 is connecting to VC2 as we can confirm by its system name. Leaf node 1# show lldp neighbors interface e1/6 detail Chassis id: 50:65:f3:5e:a5:85 Port id: X5 Local Port id: Eth1/6 Port Description: HP VC FlexFabric-20/40 F8 Module 4.45 X5 System Name: VC2040F8-7C K System Description: HP VC FlexFabric-20/40 F8 Module T00:33:55Z Time remaining: 100 seconds System Capabilities: Enabled Capabilities: Management Address: Vlan ID: not advertised Total entries displayed: 1
66 VSphere host learned VLAN ID 1044 (for example) from VCs through LLDP tagging feature, VMs will see EPG associated portgroups available as a choice of their network choices. This concludes downstream (between VDS and VC) LLDP communication verification. Solution Resilience Tests The purpose of the tests is to validate design principles and results of interruption to each fault domain. Three fault domains will be tested as VC1, VC2, or leaf node 2. Testbed: A testing VM-1 is App1 on an ESXi host integrated into an ACI VMM infrastructure. IP address of the VM is at /24. The second VM testing VM-2 is on an ESXi host outside ACI at The network for testing VM-1 is assigned to portgroup HPE HPE-ANP App on an ACI created VDS. The network of Testing VM-2 is assigned to data center management VLAN. Inter- VLAN routing is through aggregate switches. A ping utility was used with the following config: Trace interval 1 ping per second Statistics Samples to include 1 Packet Size (in byte) 1, Ping continuous from both directions during test, (From Testing VM-1 VM2 and Testing VM-2 VM1) Before failover tests were started, the connectivity was verified. Ping from testing VMs was successful. The following scenarios were tested:
67 Simulating VC2 Down by powering off VC2 Action: Shutdown VC2 module via Virtual Power Button in OA Result: 1-2 ping loss was observed. See Appendix B for detailed data and graph. Simulating a VC1 Down - by powering off VC1 Action: Shutdown VC1 module via Virtual Power Button in OA Result: No immediate ping loss, but after the module was down 2-3 minutes, a delayed ping loss occurred. Total ping lost 3 5. Please see Appendix B for detailed data and graph. Result: No ping loss was observed when leaf node 2 was powered down, but some ping loss occurred when the fabric re-converged. See Appendix B for detailed data and graph.
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