how to allow vlan info to reach switch 3

[akhanwaterloo]

Hi

Current scenario

Site A - switch A fibre connectivity between A and B

Site B - Switch B fibre connectivty between B and C

Site C - Switch C

Switch A is connected to switch B through fibre port-

Switch B is connected to switch C through fibre

there are some ip phones in site C on switch C

I have two vlans vlan 301 DATA and vlan 310 VOIP information available on switch A and that when connected to switch B as a TRUNK is available on switch B

how to send these vlans info to the ip phones on switch C on site C

Any help is appreciated

Thanks

Asif

[Robert Taylor]

Do you have a trunk between switch B and switch C?

A trunk between the two devices needs to be configured to allow those two vlans to pass between the two switches.

Do "show int trunk" and "show run int x", where x is the B-C interface, on both switch B and switch C, and send us the info.

[akhanwaterloo]

thats where i was confused so to make my concept clear

switch A and B connected through trunk on port 25 fibre

config on switch A and B are port 25

int gi0/25

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 301,310

switchport mode trunk

so if I create a trunk on switch B and C on available port 26 and connect them

config on switch B and C would be on port 26

int gi0/26

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 301,310

switchport mode trunk

so my ip phones on switch C will get voip and data vlan info to connect

Thanks

Asif

[Jon Marshall]

akhanwaterloo wrote:
thats where i was confused so to make my concept clear
switch A and B connected through trunk on port 25 fibre
config on switch A and B are port 25
int gi0/25
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 301,310
switchport mode trunk
so if I create a trunk on switch B and C on available port 26 and connect them
config on switch B and C would be on port 26
int gi0/26
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 301,310
switchport mode trunk
so my ip phones on switch C will get voip and data vlan info to connect
Thanks
Asif

Asif

Yes that is what you need to do.

Jon

[Robert Taylor · Accepted solution]

Exactly ... Just need to continue the trunk on to swich C.  Your config looks correct.