11-16-2017 09:58 PM - edited 03-01-2019 08:40 AM
Hi All,
I am trying to do DCI between 2 pair of Nexus 9508 using VPC. However, on one of the NEXUS is failed to do VPC. I noticed the status of the physical interface, it shown as "vpcCmpFai"
Sh int e2/1 status
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth2/1 -- vpcCmpFai trunk full auto 10Gbase-LR
NX1-1(config-if)#
NX1-1(config-if)#
NX1-1(config-if)# Sh int e3/1 statu
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth3/1 -- vpcCmpFai trunk full auto 10Gbase-LR
NX1-1(config-if)#
NX1-1(config-if)#
NX1-1(config-if)# Sh int po 98 statu
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Po98 -- noOperMem trunk full auto --
NX1-1(config-if)#
**E2/1 and E3/1 are member of Po98**
Anyone experienced this error before, please help advise what to do to fix it?
11-21-2017 08:52 AM
11-22-2017 12:08 AM
Hi Rick1776
Yes, there is an incompatibility issue. But again, I do not know why it is giving this issue. I re-check my configure and they are exactly the same on both side.
See below for output of show command:
Sh vpc consis vpc 98
Legend:
Type 1 : vPC will be suspended in case of mismatch
Name Type Local Value Peer Value
------------- ---- ---------------------- -----------------------
STP Port Type 1 Edge Trunk Port Edge Trunk Port
STP Port Guard 1 Root Default
STP MST Simulate PVST 1 Default Default
lag-id 1 [(1000, [(1000,
0-23-4-ee-be-a, 8062, 0-23-4-ee-be-a, 8062,
0, 0), (1000, 0, 0), (1000,
0-23-4-ee-be-1e, 8062, 0-23-4-ee-be-1e, 8062,
0, 0)] 0, 0)]
mode 1 active active
delayed-lacp 1 disabled disabled
Speed 1 10 Gb/s 10 Gb/s
Duplex 1 full full
Port Mode 1 trunk trunk
Native Vlan 1 1 1
MTU 1 1500 1500
LACP Mode 1 on on
Interface type 1 port-channel port-channel
Admin port mode 1 trunk trunk
Switchport Isolated 1 0 0
vPC card type 1 N9K EOR LC N9K EOR LC
Allowed VLANs - 482-483,910-939,960-97 482-483,910-939,960-97
9 9
Local suspended VLANs - - -
====================================================
Here is configure on NX-1
!
interface port-channel98
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree port type edge trunk
spanning-tree bpduguard disable
vpc 98
!
interface Ethernet2/1
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
!
interface Ethernet3/1
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
!
====================================================================
Here is configure on NX-2
!
interface port-channel98
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree port type edge trunk
spanning-tree bpduguard disable
vpc 98
!
interface Ethernet2/1
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
!
interface Ethernet3/1
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
!
=====================================================================
As you can see, I do not have any ROOT Guard enabled at all on these port but why the show command said one side has ROOT guard and the other is default?
###Note###
I also have these configure enable at global
!
spanning-tree port type edge bpduguard default
spanning-tree port type edge bpdufilter default
!
11-22-2017 09:18 AM - edited 11-22-2017 09:19 AM
Are module 2 and 3 the same?
Also why do you have this on port type edge trunk?
Os this just connecting to an server?
11-22-2017 11:00 PM
Hi Rick1776
Are module 2 and 3 the same?
- Yes, Module 2 and 3 are the same
Also why do you have this on port type edge trunk? Or this just connecting to an server?
- As per best practice on page 62 [Configure the vPC used for DCI as spanning-tree port type edge (i.e port fast) to fasten port state forwarding mode when port is operationally up]
11-22-2017 10:04 AM
11-22-2017 11:04 PM
Hi Rick1776
I'm not sure what you mean. Both side are the same as you can see from below:
This is interface po98 on NX-1:
interface port-channel98
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree port type edge trunk
spanning-tree bpduguard disable
vpc 98
This is interface po98 on NX-2:
interface port-channel98
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree port type edge trunk
spanning-tree bpduguard disable
vpc 98
11-23-2017 08:37 AM
11-23-2017 11:35 AM
11-23-2017 01:18 PM
interface port-channel98
switchport mode trunk
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree port type edge trunk
spanning-tree bpduguard disable
vpc 98
!
interface Ethernet2/1
switchport mode trunk This should not be here
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
!
interface Ethernet3/1
switchport mode trunk this should not be here
switchport trunk allowed vlan 482-483,910-939,960-979
spanning-tree bpduguard disable
channel-group 98 mode active
under Int 2/1 and 3/1 you should just have
channel-group 98
no shut
configure all other interfaces under int po 98
11-24-2017 07:41 AM
Hi Rick1776
Ok, now I get you..
i will try as you suggested and will let you the outcome.
thank you very much for helping
11-24-2017 10:42 AM
Not a problem happy to help.
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