05-11-2016 10:48 AM - edited 03-08-2019 05:42 AM
Hi All,
I have to implement some configuration on below details .
1. How to add more than one vlan over Cisco switch 4500 trunk port. ( existing vlan also will be there )
2. I have 2 4500 switch trunked and port channel also there .
So my question is that do i need to add those new Vlans over trunk port and port channel also ?
Looking for reply
Solved! Go to Solution.
05-11-2016 01:43 PM
It depends on your existing configuration. If you haven't specified WHICH vlans are allowed, they would be carried by default. If not, then you have to add the new vlans to the trunk definition.
As far as new vlans go, it also depends. IF you have VTP set up, you really only have to create the new vlan on one of the VTP master switches (probably your 4500) and the definition will propogate to the other switches. If not, you then have to declare the new vlans on each switch that would need them.
05-11-2016 02:06 PM
Hello
The command to add an additional vlan to and existing single or aggregate port-channel pruned trunk the command would be:
switchport trunk allowed vlan add x
Note:- For port-channel you apply the above to the port-channel interface -NOT the physical interfaces for the aggregate
res
Paul
05-11-2016 01:43 PM
It depends on your existing configuration. If you haven't specified WHICH vlans are allowed, they would be carried by default. If not, then you have to add the new vlans to the trunk definition.
As far as new vlans go, it also depends. IF you have VTP set up, you really only have to create the new vlan on one of the VTP master switches (probably your 4500) and the definition will propogate to the other switches. If not, you then have to declare the new vlans on each switch that would need them.
05-13-2016 01:30 AM
Hi All,
Thanks for your support .
Need to clear some more thing here.
1. My both the DST ( Core ) Switches are on VTP transparent mode. So do i need to add all the new vlan add over both the switches ?
2. Both the switches are connect to WLC via port channel and i want those vlan to be added to WLC also .
so do i need to add all the vlans over port channel interface
05-13-2016 04:35 AM
With VTP Transparent, you would have to add the VLAN's to each switch you want them on (and I believe all intermediate ones as well, if you have them).
Again, IF you have specified the VLAN's allowed on a trunk, you would have to add them on both sides. If you didn't specify, then all VLAN's are allowed by default.
05-11-2016 02:06 PM
Hello
The command to add an additional vlan to and existing single or aggregate port-channel pruned trunk the command would be:
switchport trunk allowed vlan add x
Note:- For port-channel you apply the above to the port-channel interface -NOT the physical interfaces for the aggregate
res
Paul
02-04-2019 06:32 PM
Correct
Before without vlan 10
interface Port-channel 7
switchport trunk allowed vlan 2,3,4,5,6
switchport mode trunk
exit
AFTER [see adding vlan 10]
interface Port-channel 7
switchport trunk allowed vlan 2,3,4,5,6
switchport mode trunk
switchport trunk allowed vlan add 10
exit
RESULTS on channel group 7
switchport trunk allowed vlan 2,3,4,5,6,10
Port Channel 7 can be also used on bundling interfaces L2
Sebastian Burci
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide