Hands-on Labs
645
1900B#sh vlan
VLAN Name Status Ports
--------------------------------------
1 default Enabled 1-12, AUI, A, B
2 Sales Enabled
3 Management Enabled
4 Engineering Enabled
5 Marketing Enabled
1002 fddi-default Suspended
1003 token-ring-defau Suspended
1004 fddinet-default Suspended
1005 trnet-default Suspended
--------------------------------------
Notice that it found all the VLANs, but that all of 1900B's switch ports
are in VLAN 1. Unless you tell it differently, all ports are always in VLANs.
You have to set the ports at each switch. (VTP sends VLAN information, not
port information.)
Lab B.7: Configuring Inter-VLAN Routing with ISL
Now that we have configured our VLANs and set up VTP domain informa-
tion so both switches have the same VLAN configurations, we need to
configure the 2600 router to support inter-VLAN routing.
1.
Plug the 2600 into one of the Fast Ethernet ports on either switch. It
doesn't matter where you plug the router into the switch fabric.
2.
Configure the switch port as a trunk port.
1900A#config t
1900A(config)int f0/027
1900A(config-if)# trunk on
3.
Configure the 2600 router Fast Ethernet port to route between
all VLANs.
2621#config t
2621(config)int f0/0.1
2621(config-if)no shutdown
2621(config-subif)# encapsulation isl 1
Copyright ©2002 SYBEX, Inc., Alameda, CA
www.sybex.com