Re: Issue regarding nexus topology

Liad Dayan · ‎08-30-2012

Hi guys,

Iam having some trouble managing the nexus topology.

i have 2 nexus 7010

i have 2 nexus 5k

and i have 6 nexus 2k connected to the 5k as a fex fabric.

Now ,

The 5k connected and they are doing vpc connectivity between them (vpc keep-alive,and such).

We want to connect the nexus 7k to the nexus 5k with vpc.

The nexus 7k got vpc between them (vpc keep-alive , and such)

everytime i set up the vpc vs the port-channel the ports shut down and cause the nexus`s to lose connectivity.

here is the configuration regarding this senario:

N7K-1

interface ethernet 1/1

channel-group 50 mode on

!

interface port-channel50

switchport

switchport mode trunk

vpc 50

N7K-2

interface ethernet 1/1

channel-group 50 mode on

!

interface port-channel50

switchport

switchport mode trunk

vpc 50

*** for couple of seconds it stays up and running and suddenly it shuts.

allso i tryed to configure it with spanning-tree port type network but it didnt help.

Somone have idea?

Regards,

vann_will · ‎08-30-2012

is it possible for you to post the sh vpc brief, sh vpc role, and sh vpc peer-keepalive

vann_will · ‎08-30-2012

Do you have any Active vlan's going across the VPC Ports from the 5K's to the 7K's?

Liad Dayan · ‎09-02-2012

Hi,

yea i do have active vlan accross the VPC ports.

here is the show commands you asked for;

OTV_L2_VERED-1-VERED-DC-1# show vpc

Legend:

(*) - local vPC is down, forwarding via vPC peer-link

vPC domain id : 2

Peer status : peer adjacency formed ok

vPC keep-alive status : peer is alive

Configuration consistency status : success

Per-vlan consistency status : success

Type-2 consistency status : success

vPC role : primary

Number of vPCs configured : 3

Peer Gateway : Disabled

Dual-active excluded VLANs : -

Graceful Consistency Check : Enabled

Auto-recovery status : Disabled

vPC Peer-link status

---------------------------------------------------------------------

id Port Status Active vlans

-- ---- ------ --------------------------------------------------

1 Po1 up 1,4-7,11,208,300,997,999,2052-2054,2134

vPC status

----------------------------------------------------------------------

id Port Status Consistency Reason Active vlans

-- ---- ------ ----------- ------ ------------

11 Po11 up success success 1,4-7,11,20

8,300,997,9

99,2052-205

4,2134

12 Po12 up success success 1,4-7,11,20

8,300,997,9

99,2052-205

4,2134

50 Po50 down* success success -

------------------------------------------------------------------------------------

OTV_L2_VERED-1-VERED-DC-1# show vpc peer-keepalive

vPC keep-alive status : peer is alive

--Peer is alive for : (5476) seconds, (283) msec

--Send status : Success

--Last send at : 2012.09.03 02:48:33 583 ms

--Sent on interface : Eth3/4

--Receive status : Success

--Last receive at : 2012.09.03 02:48:33 693 ms

--Received on interface : Eth3/4

--Last update from peer : (0) seconds, (526) msec

vPC Keep-alive parameters

--Destination : 10.0.10.2

--Keepalive interval : 1000 msec

--Keepalive timeout : 5 seconds

--Keepalive hold timeout : 3 seconds

--Keepalive vrf : default

--Keepalive udp port : 3200

--Keepalive tos : 192

---------------------------------------------------------------------------------------

2nd

--------------------------------------------------------------------------------------

vPC domain id : 2

Peer status : peer adjacency formed ok

vPC keep-alive status : peer is alive

Configuration consistency status : success

Per-vlan consistency status : success

Type-2 consistency status : success

vPC role : secondary

Number of vPCs configured : 3

Peer Gateway : Disabled

Dual-active excluded VLANs : -

Graceful Consistency Check : Enabled

Auto-recovery status : Disabled

vPC Peer-link status

---------------------------------------------------------------------

id Port Status Active vlans

-- ---- ------ --------------------------------------------------

1 Po1 up 1,4-7,11,208,300,997,999,2052-2054,2134

vPC status

----------------------------------------------------------------------

id Port Status Consistency Reason Active vlans

-- ---- ------ ----------- ------ ------------

11 Po11 up success success 1,4-7,11,20

8,300,997,9

99,2052-205

4,2134

12 Po12 up success success 1,4-7,11,20

8,300,997,9

99,2052-205

4,2134

50 Po50 down* success success -

-----------------------------------------------------------------------------------

OTV_L2_VERED-1-VERED-DC-2# show vpc pee

vPC keep-alive status : peer is alive

--Peer is alive for : (5544) seconds, (301) msec

--Send status : Success

--Last send at : 2012.09.03 02:49:42 576 ms

--Sent on interface : Eth3/8

--Receive status : Success

--Last receive at : 2012.09.03 02:49:42 342 ms

--Received on interface : Eth3/8

--Last update from peer : (0) seconds, (786) msec

vPC Keep-alive parameters

--Destination : 10.0.10.1

--Keepalive interval : 1000 msec

--Keepalive timeout : 5 seconds

--Keepalive hold timeout : 3 seconds

--Keepalive vrf : default

--Keepalive udp port : 3200

--Keepalive tos : 192

----------------------------------------------------------------------------

On the Nexus 5000

I have just a port-channel configured as;

interface port-channel50

switchport mode trunk

spanning-tree port type network

speed 10000

storm-control broadcast level 0.50

storm-control multicast level 0.50