Module 4: Verify OTV
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Verify the OTV adjacency is formed by using the following command:
show otv isis adjancency. The output will show adjacencies with all PODs that have completed the configuration of OTV.
POD-0-OTV-:
POD-0-OTV-B# show otv isis adjacency
OTV-IS-IS process: default VPN: Overlay1
OTV-IS-IS adjacency database:
System ID SNPA Level State Hold Time Interface Site-ID
POD-9-OTV-A 8478.ac0c.a547 1 UP 00:00:57 Overlay1 0009.0009.0009
POD-0-OTV-A 8478.ac21.ed43 1 UP 00:00:52 Overlay1 0000.0000.0000
POD-9-OTV-B 8478.ac21.ed47 1 UP 00:00:55 Overlay1 0009.0009.0009
POD-0-OTV-B#
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Verify OTV adjacencies using
show otv adjacency.
POD-0-OTV-:
POD-0-OTV-B# show otv adjacency
Overlay Adjacency database
Overlay-Interface Overlay1 :
Hostname System-ID Dest Addr Up Time State
POD-0-OTV-A 8478.ac0c.a543 10.0.201.10 15:39:46 UP
POD-9-OTV-A 8478.ac0c.a547 10.9.201.10 15:39:09 UP
POD-9-OTV-B 8478.ac21.ed47 10.9.201.14 15:38:23 UP
POD-0-OTV-B#
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Verify the OTV interface is up by using
show otv overlay 1.
POD-0-OTV-:
POD-0-OTV-B# show otv overlay 1
OTV Overlay Information
Site Identifier 000X.000X.000X
Encapsulation-Format ip - udp
Overlay interface Overlay1
VPN name : Overlay1
VPN state : UP
Extended vlans : 11-12 21-22 (Total:4)
Control group : 239.1.1.1
Data group range(s) : 232.1.1.0/24
Broadcast group : 239.2.2.2
Join interface(s) : Po100 (10.0.201.10)
Site vlan : 000 (up)
AED-Capable : Yes
Capability : Multicast-Reachable
POD-0-OTV-B#
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Verify the your OTV Site by using
show otv site.
POD-0-OTV-:
POD-0-OTV-B# show otv site
Dual Adjacency State Description
Full - Both site and overlay adjacency up
Partial - Either site/overlay adjacency down
Down - Both adjacencies are down (Neighbor is down/unreachable)
(!) - Site-ID mismatch detected
Local Edge Device Information:
Hostname POD-0-OTV-B
System-ID 8478.ac0c.a547
Site-Identifier 0000.0000.0000
Site-VLAN 000 State is Up
Site Information for Overlay1:
Local device is AED-Capable
Neighbor Edge Devices in Site: 1
Hostname System-ID Adjacency- Adjacency- AED-
State Uptime Capable
-----------------------------------------------------------------------------------------------
POD-0-OTV-A 8478.ac59.2bc7 Full 00:08:59 Yes
POD-0-OTV-B#
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Verify the OTV Extended VLANs are active on the appropriate Edge Device (ED), split across on an odd/even basis using
show otv vlan.
POD-0-OTV-:
POD-0-OTV-B# show otv vlan
OTV Extended VLANs and Edge Device State Information (* - AED)
Legend:
(NA) - Non AED, (VD) - Vlan Disabled, (OD) - Overlay Down
(DH) - Delete Holddown, (HW) - HW: State Down
(NFC) - Not Forward Capable
VLAN Auth. Edge Device Vlan State Overlay
---- ----------------------------------- ---------------------- ------
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11 * POD-0-OTV-B active Overlay1
12 POD-0-OTV-A inactive(NA) Overlay1
21 * POD-0-OTV-B active Overlay1
22 POD-0-OTV-A inactive(NA) Overlay1
POD-0-OTV-B#
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Verify OTV Fast Failure using
show bfd neighbors&show otv isis track-adjacency-nexthop.
POD-0-OTV-:
POD-0-OTV-B# show bfd neighbors
OurAddr NeighAddr LD/RD RH/RS Holdown(mult) State Int Vrf
10.0.201.10 10.0.201.9 1191182340/0 Up N/A(3) Up Po100 default
192.168.0.2 192.168.0.1 1191182343/1191182352 Up 5625(3) Up Vlan 00 default
10.0.201.10 10.0.201.9 1191182341/1140850701 Up 661(3) Up Eth4/23 default
10.0.201.10 10.0.201.9 1191182342/1140850702 Up 660(3) Up Eth4/24 default
POD-0-OTV-B#
POD-0-OTV-B# show otv isis track-adjacency-nexthop
OTV-IS-IS process: default
OTV-ISIS adjs for nexthop: 10.0.201.10, VRF: default
Hostname: POD-0-OTV-A, Overlay: Overlay1
POD-0-OTV-B#
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Verify the IP connectivity between your pod and the preconfigured POD-9 using the extended OTV VLANs. IP connectivitiy can also be verified pod to pod (Note: This will only function if the other pods have completed the OTV configuration):
| Tenant | Default Gateway |
|---|---|
Save your Nexus 7000 and Nexus 9300 configurations with the copy run start command.
For those who are more familiar with the legacy IOS command-set, an alias for wr
(to execute “copy running-config startup-config”) has been created on all Nexus 7000s and 9300s in the topology.