vPC link between 7k & 5k

[CSCO11832637]

Hi,

I'm starting studing Nexus, in my lab i only have a 7k and 5k. Is it possible to create a vPC link between those two?

I tried but i received the error:

Nexus 7000
Nexus_7000(config-if)# vpc peer-link ERROR: Operation failed: [Interface is not capable of acting as peer-link]

The interface is an 1G, do i need to configure it on a 10G?

The 5k accept the configuration.

Thank you.

[smogra · Accepted solution]

Hi,

Like the error said " ERROR: Operation failed: [Interface is not capable of acting as
peer-link]"
For vPC peer link both ends must to 10G interfaces.

Please follow up the configuration guide for the same:
http://www.cisco.com/en/US/partner/docs/switches/datacenter/sw/5_x/nx-os/interfaces/config
uration/guide/if_vPC.html#wp1803465

Hope that helps.

Sweta

P.S. Please rate the reply if it answered your question

[CSCO11832637]

Thank you for the reactivity.

Now i've got another issue. The trunk is up between the Two but i cannot manage to mount the vPC peer-link.

I'm wondering if this link is 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.

Ce message a été modifié par: Guillaume ALLAIRE

[anthonykahwati]

Hi

I know that this has been answered, but could not access the link above with my CCO account and I only found definitive proof once i had configured the port-channel as a VPC-Peerlink as I could not find anything online (other than this post) that said a 1G definitely can't be used as a peer link, there were just recomendations for it to be 10G,..... anyway, this is the output I got once I tried to swap the 10Gb tester interface with the intended 1G interfaces:

It's definitely not possible to configure a 1G port as a VPC Peer Link.

interface port-channel1

vpc peer-link

(config-if)# interface Ethernet4/35

(config-if)#   switchport

(config-if)#   switchport mode trunk

(config-if)#   switchport trunk allowed vlan 10,13

(config-if)#   channel-group 1 mode active

command failed: port not compatible [1G port is not capable of acting as peer-link]

(config-if)#   no shutdown

Anthony