Interconnect 2 VSS and certain port ping problem

[rvcitsupport]

Hi,

We have the datacenter network as the attached image.

Description:

+ VSS-CORE:

2 switches: WS-C4506-E
Sup: WS-X45-SUP8-E
IOS: 03.06.03.E

VLAN: 151

+ VSS-SRV:

2 switches: WS-C4510R+E
Sup: WS-X45-SUP8-E
IOS: 03.06.03.E

VLAN: 143

+ The 2 VSS connected using 1 layer 3 port channel and EIGRP routing

+ Everything is OK except port Gi2/7/41 on VSS-SRV:

-PC connected to this port can ping to its gateway, but it CANNOT ping VLAN on VSS-CORE.

-If we move this PC to other ports (for example Gi2/7/40) with the same port configurations and same IP address, all PINGs are OK.

* If PC connected to non-working port (Gi2/7/41) and we shutdown 1 port from VSS-SRV to VSS-CORE (Te1/5/3
on VSS-SRV), the problem will disappear.

The problem is too weird with us. Could you give me any suggestion?

Thanks in advanced!

[andreassb]

Do the two VSS domains have different ID's?

"switch virtual domain xyz"

[rvcitsupport]

Hi andreassb,

Thanks for your attention,

We did configure different virtual domain id on the 2 VSS.

VSS-CORE: switch virtual domain 1

VSS-SRV: switch virtual domain 101

Note that the problem happens with only 1 port  Gi2/7/41.