Thank you for your reply.

yes both Sup running the same IOS

CORE-2#sh module

Mod Ports Card Type                                                      Model             

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

  1   48  CEF720 48 port 10/100/1000mb Ethernet        WS-X6848-GE-TX    

  2   24  CEF720 24 port 1000mb SFP                         WS-X6824-SFP      

  3    8  DCEF2T 8 port 10GE                                      WS-X6908-10G     

  5    5  Supervisor Engine 2T 10GE w/ CTS (Acti          VS-SUP2T-10G      

Mod MAC addresses                               Hw       Fw                      Sw           Status

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

  1  a44c.113f.a230 to a44c.113f.a25f       1.0   12.2(18r)S1      15.0(1)SY1           Ok

  2  a44c.110d.3a20 to a44c.110d.3a37    1.0   12.2(18r)S1      15.0(1)SY1           Ok

  3  5057.a81c.8510 to 5057.a81c.8517    1.2   12.2(50r)SYL    15.0(1)SY1           Ok

  5  e05f.b910.b218 to e05f.b910.b21f       1.3   12.2(50r)SYS    15.0(1)SY1           Ok

Mod  Sub-Module                            Model                           Hw     Status

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

  1  Distributed Forwarding Card       WS-F6K-DFC4-A          1.2        Ok

  2  Distributed Forwarding Card       WS-F6K-DFC4-A          1.2        Ok

  3  Distributed Forwarding Card       WS-F6K-DFC4-E          1.2        Ok

  5  Policy Feature Card 4                VS-F6K-PFC4              1.2        Ok

  5  CPU Daughterboard                   VS-F6K-MSFC5           1.4        Ok

==========

Active Config:

==========

redandancy

mode sso

interface range TenGigabitEthernet5/4 - 5

switchport mode trunk

channel-group 1 mode on

switch virtual domain 10

switch 1

switch 1 priority 110

switch 2 priority 100

interface port-channel 1

switch virtual link 1

switch convert mode virtual

============

Standby Config:

============

redandancy

mode sso

interface range  Te2/5/4 - 5

switchport mode trunk

channel-group 1 mode on

switch virtual domain 10

switch 2

switch 1 priority 110

switch 2 priority 100

interface port-channel 1

switch virtual link 2

switch convert mode virtual

====================

Thanks in advance.

Abdullah

What error messages do you get when you try to VSS?

Post the "sh logs".

i dont have the show log right now.

but after VSS configuration im not able to access the standby chassis via console, because the Sup2T not active, usually you can access it and see it as standby.

Thanks,