vlan help 1

[tamray]

I need to add a vlan with trunking to a couple of heavily used switches. I can't afford to accidentally bring the switches down, so would like someone to let me know if this proposed config will work.

Details:

Cisco 6500 switch at head end will have the inside interface of a firewall attached to port 4/10.

Cisco 5500 switch port 2/10 is connected to a small switch with 5-6 PCs. They need to communicate between themselves, and get out through the 6500 to the firewall, and out the router for Internet.


Proposed config for switches:

6500
set vtp domain marshall
set vtp mode transparent
set vlan 101 name marshall
set vlan 101 4/10
set trunk 1/1 desirable dot1q
set trunk 1/1 101

5500
set vtp domain marshall
set vtp mode transparent
set vlan 101 name marshall
set vlan 101 2/10
set trunk 2/1 desirable dot1q
set trunk 2/1 101


All other PCs are on vlan1, so it is important I do not accidentally block them out.

Does this look right, or should it be changed?

 

[vipergg]

Looks fine if you are just adding a single vlan ( 101) to your trunk . This is assuming that link is already a trunk . If it is not currently a trunk then you are going to take a hit when you activate the trunk . By default when first create the trunk all created vlans are allowed on the trunk and then you can manually prune them off if that is what you want.