vPC peer-link between 5000 & 7000

[CSCO11832637]

Hi,

i'm tring to create a vPC peer-link between my 7000 & 5000.

The 10G trunk is up between the Two but i cannot manage to mount the vPC peer-link.

I'm wondering if this link is even possible, Cisco doesn't talk about a connection like that.

Here is some of my conf & some Show

5000	7000
Nexus5000#show run peer-keepalive destination x.x.x.81 interface port-channel20   switchport mode trunk   switchport trunk native vlan 20   switchport trunk allowed vlan 20   vpc peer-link   spanning-tree port type network interface Ethernet1/1   switchport mode trunk   switchport trunk native vlan 20   switchport trunk   channel-group 20	Nexus7000#show run peer-keepalive destination x.x.x.80 interface port-channel20   switchport   switchport mode trunk   switchport trunk native vlan 20   switchport trunk allowed vlan 20   spanning-tree port type network   vpc peer-link interface Ethernet2/1   switchport mode trunk   switchport trunk native vlan 20   switchport trunk allowed vlan 20   channel-group 20   no shutdown
Nexus5000#debug vpc peer-link 2011 Jun 20 17:38:51.020575 vpc: Successfully sent the mct-indx to CFS 2011 Jun 20 17:38:51.022500 vpc: Dropping the mts_wrap of First Log Bup 2011 Jun 20 17:38:51.022560 vpc: Added 1 vlans to loc cfg list 2011 Jun 20 17:38:51.022632 vpc: Saving the MCT [1] context in PSS 2011 Jun 20 17:38:51.029502 vpc: Vlans [20] in Error vlan list for MCT	Nexus7000#debug vpc peer-link 2011 Jun 20 21:21:45.747776 vpc: Successfully sent the mct-indx to CFS 2011 Jun 20 21:21:45.748457 vpc: Dropping the mts_wrap of First Log Bup 2011 Jun 20 21:21:45.748481 vpc: Added 1 vlans to loc cfg list 2011 Jun 20 21:21:45.748566 vpc: Saving the MCT [1] context in PSS 2011 Jun 20 21:21:45.759469 vpc: Vlans [20] in Error vlan list for MCT 2011 Jun 20 21:25:35.865093 vpc: Failed to send mts to [210] opc [0x1a01b], pyld-siz [1064] error [Broken pipe]
Nexus5000# show vpc brief vPC domain id                   : 1   Peer status                     : peer link is down                                               (vPC peer is not reachable over                                             cfs)                                      vPC keep-alive status           : peer is alive                 Configuration consistency status: failed  Configuration consistency reason: Consistency Check Not Performed vPC role                        : none established              vPC Peer-link status --------------------------------------------------------------------- id   Port   Status Active vlans    --   ----   ------ -------------------------------------------------- 1    Po20   up     -	Nexus_7000# show vpc brief vPC domain id                   : 1   Peer status                     : peer link is down                                               (vPC peer is not reachable over                                      cfs)                               vPC keep-alive status           : peer is alive                 Configuration consistency status: failed  Configuration consistency reason: Consistency Check Not Performed Type-2 consistency status       : success vPC role                        : none established              Number of vPCs configured       : 0   Peer Gateway                    : Disabled Dual-active excluded VLANs      : - vPC Peer-link status --------------------------------------------------------------------- id   Port   Status Active vlans    --   ----   ------ -------------------------------------------------- 1    Po20   up     -

Thank you.

[Jerry Ye · Accepted solution]

I can't find any documentation but I don't even think this is a supported design/configuration.

Regards,

jerry

[Ruhann Du Plessis · Accepted solution]

Agreed. The problem you having sounds a CFS incompatibility between the nexus 5000 and 7000.

The debug output you posted, stop before the two CFS peers enters a negotiation phase.

I test a working config between a N5K and a N7K, it it did not come up.

This might be version related, but without any documentation reference, I can say if there are compatible N5K/N7K versions.

hth

[CSCO11832637]

Ok,

thank you for trying. I give up i'll try others features.

Maybe it's gonna come later, nowadays, let's say it's not possible.

Thank you guys.

[shasanain]

I am running into a similar situation with one of my customers. Did you reconsider this design?

Wondering if we can pair a Nexus 7009 switch with a Nexus 5548 as vPC peers?