04-11-2010 04:00 PM - edited 03-06-2019 10:33 AM
Hello,
I'm trying to configure a Nexus 2148T to connect redundant to two different Nexus 5010's. I'm not sure if my config is correct and working :
On the active 5K :
HI15887# show fex
FEX FEX FEX FEX
Number Description State Model Serial
------------------------------------------------------------------------
110 HI15885 Online N2K-C2148T-1GE JAF1405CKGM
111 HI15886 Online N2K-C2148T-1GE JAF1405ASPT
On the 'passive' 5K :
HI15888# show fex
FEX FEX FEX FEX
Number Description State Model Serial
------------------------------------------------------------------------
--- -------- Connected N2K-C2148T-1GE JAF1405CKGM
--- -------- Connected N2K-C2148T-1GE JAF1405ASPT
HI15888#
But after x-minutes I see :
HI15888# show fex
FEX FEX FEX FEX
Number Description State Model Serial
------------------------------------------------------------------------
--- -------- Offline N2K-C2148T-1GE JAF1405CKGM
--- -------- Offline N2K-C2148T-1GE JAF1405ASPT
Should I see the FEX on the passive 5K? Should I see it's interfaces?
I get this error in the logs :
ETHPORT-5-IF_ERROR_VLANS_SUSPENDED: VLANs 1 on Interface port-channel30 are being suspended. (Reason: vPC peer is not reachable over cfs)
However :
HI15888# show cfs peers
Physical Fabric
-------------------------------------------------------------------------
Switch WWN IP Address
-------------------------------------------------------------------------
20:00:00:0d:ec:ff:5f:c0 x.x.x.x [Local]
HI15888
20:00:00:0d:ec:ff:97:00 x.x.x.x
Total number of entries = 2
HI15888# show vpc
Legend:
(*) - local vPC is down, forwarding via vPC peer-link
vPC domain id : 101
Peer status : peer adjacency formed ok
vPC keep-alive status : peer is alive
Configuration consistency status: success
vPC role : secondary
If I enter configuration changes on a FEX interface, it's lost when I reload the Active 5K and the system fails over to the passive 5K.
Here's my config for both 5k's :
vpc domain 101
role priority xxxx
system-priority 4000
peer-keepalive destination x.x.x.x
feature fex
fex 110
pinning max-links 1
type "Nexus 2148T"
fex 111
pinning max-links 1
type "Nexus 2148T"
interface port-channel30
switchport mode trunk
switchport trunk native vlan 999
vpc peer-link
spanning-tree port type network
speed 10000
interface port-channel100
switchport mode fex-fabric
fex associate 110
speed 10000
interface port-channel200
switchport mode fex-fabric
fex associate 111
speed 10000
interface Ethernet1/19
switchport mode trunk
switchport trunk native vlan 999
channel-group 30 mode active
interface Ethernet1/20
switchport mode trunk
switchport trunk native vlan 999
channel-group 30 mode active
Thanks,
Andy.
04-13-2010 12:09 AM
To answer my own question : I forgot the vpc parameter in the Port-Channel config.
interface port-channel100
switchport mode fex-fabric
vpc 100
fex associate 110
speed 10000
After this, all seems working. I can see the FEX from both 5010's.
Config isn't synced, but ports stay down if the config isn't identical on port level.
Andy.
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