Cascading 2 cisco 2960 switch

[jahanzeb.feroze]

Dear All,

I want to cascade two 2960 switch (Layer2) together, i have tried by making the ports trunk as well as access but it doesnt works, please help?

Regards

Jahanzeb Feroze

[Philip D'Ath]

Have you created the VLANs being trunked on both switches, or just one of them?

Trunking a VLAN between switches is not sufficient to make it work.  You actually have to create the VLAN on both switches.

[Philip D'Ath]

Are the switches within 3m of each other, and are they 2960-X's ?  If so, a nicer solution is to buy the stacking modules and make them look like one larger switch.

[jahanzeb.feroze]

yes they are with in 3m, cannot buy stacking modules, has to go with the same equipment which are already exists, one is 2960 while other is 2960 X

[s.lachica]

Hi Jahanzeb,

Here is a sample configuration for basic 2-switch connection.

PC1---(G0/2) 2960SW1 (G0/1)----------utp---------(G0/1) 2960SW2 (G0/2)---PC2

2960SW1:

configure terminal

vlan 10,20,30

interface G0/1

 switchport mode trunk

interface G0/2

 switchport mode access

 switchport access vlan X

end

2960SW2:

configure terminal

vlan 10,20,30

interface G0/1

 switchport mode trunk

interface G0/2

 switchport mode access

 switchport access vlan X

end

Verification:

show interface G0/1 (must be status up line protocol up)

show interface G0/2 (must be status up line protocol up)

show spanning-tree interface G0/1 (VLANs mustbe in FWD state)

show spanning-tree interface G0/2 (VLANs mustbe in FWD state)

show interface trunk

(Please post results here if still not working)

Please rate correct if this answered your problem.

Regards,

Son

[jahanzeb.feroze]

PC1---(G0/2) 2960SW1 (G0/1)----------utp---------(G0/1) 2960SW2 (G0/2)---PC2

Above scenario works perfectly fine, and i am able to ping both PCs, but i have to create the following scenario with No PC attached,

 2960SW1 (G0/1)----------utp---------(G0/1) 2960SW2

Had tried configuring both ports as trunk, but it didnt work, couldnt able to cascade.

[s.lachica]

If you are not using PCs, then how are you testing the connections? Are these physical problem (show ip int brief shows status down, line protocol down)?