VLAN issues

imranraheel · ‎03-10-2008

i have only 2 ports on my 1811 and I am already using 1 so can i still do VLAN thing and inter vlan using that single port. Plus i have 1 issu that is i have 2 2960 if i will stack both and than user 2 trunk port on each router than how am i going to connect those trunk ports on the router

I want to set up like this

Internet

|

|(Outer)

1841

|(Inner)

|

2960----2960

I just wanted to know can i use 1 port on any switch as a trunk and will able to terminate it on to 1841 and can make virtual interfaces. Is this possible

srue · ‎03-10-2008

http://www.cisco.com/warp/public/473/50.shtml

it should be possible. i've heard of some IOS versions (on the router side) not supporting interface trunking though.

You will need to trunk your two switches together. Then trunk the router to one of the switches. Subinterfaces on the router will do the inter-vlan routing. It's usually referred to as a "router on a stick".

Istvan_Rabai · ‎03-15-2008

Hi Imran,

IOS version 12.4 actually supports dot1.q trunking for 1841 routers.

Reference is the Feature Navigator:

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

Cheers:

Istvan