Hi
I have deployed OTV in a lab environment and are experiencing a strange problem. The topology is two DCs each comprising of 2 x OTV VDCs and 2 x Core VDCs.
I'm having an issue where only traffic for one vlan(164) will pass across the overlay, the overlay interfaces are up and layer 2 adjacencies are working for vlan164.
Running the ‘show otv isis adjacencies’ I can see that each otv VDC has communication to all the OTV edge devices on the overlay.
Here are some show command outputs from OTV edge VDC 1 at dc1, there results are the same for all DCs.
Dc1-nx7010-otv-01# sho otv isis adjacency
OTV-IS-IS process: default VPN: Overlay0
OTV-IS-IS adjacency database:
System ID SNPA Level State Hold Time Interface Site-ID
e4c7.2201.a844 e4c7.2201.a844 1 UP 00:00:51 Overlay0 0000.0000.0002
e4c7.2201.b244 e4c7.2201.b244 1 UP 00:00:46 Overlay0 0000.0000.0002
e4c7.2203.9244 e4c7.2203.9244 1 UP 00:00:57 Overlay0 0000.0000.0001
dc1-nx7010-otv-01# sho otv
OTV Overlay Information
Site Identifier 0000.0000.0001
Overlay interface Overlay0
VPN name : Overlay0
VPN state : UP
Extended vlans : 163-164 (Total:2)
Join interface(s) : Eth1/3 (10.100.1.22)
Site vlan : 850 (up)
AED-Capable : Yes
Capability : Unicast-Only
Is Adjacency Server : Yes
Adjacency Server(s) : 10.100.1.22 / [None]
dc1-nx7010-otv-01# sho 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 lon1-nx7010-otv-01
System-ID e4c7.2203.1ec4
Site-Identifier 0000.0000.0001
Site-VLAN 850 State is Up
Site Information for Overlay0:
Local device is AED-Capable
Neighbor Edge Devices in Site: 1
Hostname System-ID Adjacency- Adjacency- AED-
State Uptime Capable
--------------------------------------------------------------------------------
dc1-nx7010-otv-02 e4c7.2203.9244 Full 1d02h Yes
DC 1
dc1-nx7010-otv-01
vlan 163-4,850
otv site-vlan 850
interface Overlay0
otv join-interface Ethernet1/3
otv extend-vlan 163-164
otv use-adjacency-server 10.100.1.22 unicast-only
otv adjacency-server unicast-only
no shutdown
otv site-identifier 0x1
interface Ethernet1/3
no switchport
mtu 1600
ip address 10.100.1.22/30
no ip ospf passive-interface
ip router ospf 10 area 0.0.0.35
no shutdown
dc1-nx7010-otv-02
vlan 163-4,850
otv site-vlan 850
interface Overlay0
otv join-interface Ethernet1/3
otv extend-vlan 163-164
otv use-adjacency-server 10.100.1.22 unicast-only
no shutdown
otv site-identifier 0x1
interface Ethernet1/3
no switchport
mtu 1600
ip address 10.100.1.18/30
no ip ospf passive-interface
ip router ospf 10 area 0.0.0.35
no shutdown
DC 2
dc2-nx7004-otv-01
vlan 163-4,800
otv site-vlan 800
interface Overlay0
otv join-interface Ethernet4/3
otv extend-vlan 163-164
otv use-adjacency-server 10.100.1.22 unicast-only
no shutdown
otv site-identifier 0x2
interface Ethernet4/3
mtu 1600
ip address 10.100.1.5/30
no ip ospf passive-interface
ip router ospf 10 area 0.0.0.35
no shutdown
dc2--nx7004-otv-02
vlan 163-4,800
otv site-vlan 800
interface Overlay0
otv join-interface Ethernet4/3
otv extend-vlan 163-164
otv use-adjacency-server 10.100.1.22 unicast-only
no shutdown
otv site-identifier 0x2
interface Ethernet4/3
mtu 1600
ip address 10.100.1.2/30
no ip ospf passive-interface
ip router ospf 10 area 0.0.0.35
no shutdown
I would appreciate some help with this as I'm going round in circles trying to figure out what is wrong as the config looks fine and is working for one vlan.
