I'm lost here. I popped open my brand new 2821 ISR router yesterday and went to configure it and something just isn't right. Half of the commands I'm trying to use aren't available. So the only recourse I have is to find out what the router can do and then solve the issue I'm having with it. Here's my issue:
I have a trunk port coming from my ISP's router. They split the traffic into two VLANS: 360 and 560. VLAN 560 shoots everything to the Internet and VLAN 360 dumps everything into our MPLS cloud. I have two gigabit ports (G0/0 and G0/1). G0/0 will connect to the LAN and G0/1 will be the trunk port. I need to be able to tag traffic coming off of G0/1 as either VLAN 360 or VLAN 560. What do I need to do?
the only alternate way would be to add an external LAN switch and to use three ports on it:
port 1 is a trunk carrying vlan 360 and vlan560 and connects to provider
port 2 is an access port in vlan 360 and connects to C2800:g0/0
port 3 is an access port in vlan 560 and connects to C2800:g0/1
you cannot use a serial port as a LAN interface
you could consider to use an HWIC that gives some switch ports like etherswitch module
But I strongly recommend to upgrade the IOS.
you need to go to download SW -> Branch routers - > C2851 - > 12.4T
for example a 12.4 20T2 ip base
you cannot use the link as it is
the first thing to do is to add to your CCO login the service contract of the router in order to be able to download sotfware
Hope to help