11-31
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
OL-8978-04
Chapter 11 Configuring VLANs
Configuring Token Ring VLANs on the Switch
To modify the VLAN parameters on an existing FDDI VLAN, perform this task in privileged mode:
Configuring Token Ring VLANs on the Switch
These sections describe the two Token Ring VLAN types that are supported on the switches running VTP
version 2:
• Understanding How Token Ring TrBRF VLANs Work, page 11-31
• Understanding How Token Ring TrCRF VLANs Work, page 11-32
• Token Ring VLAN Configuration Guidelines, page 11-34
• Creating or Modifying a Token Ring TrBRF VLAN, page 11-34
• Creating or Modifying a Token Ring TrCRF VLAN, page 11-35
You must use VTP version 2 to configure and manage the Token Ring VLANs.
Note Catalyst 6500 series switches do not support the ISL-encapsulated Token Ring frames.
Understanding How Token Ring TrBRF VLANs Work
The Token Ring Bridge Relay Function (TrBRF) VLANs interconnect multiple the Token Ring
Concentrator Relay Function (TrCRF) VLANs in a switched Token Ring network (see Figure 11-3). The
TrBRF can be extended across a network of switches that are interconnected through the trunk links. The
connection between the TrCRF and the TrBRF is referred to as a logical port.
Figure 11-3 Interconnected Token Ring TrBRF and TrCRF VLANs
Task Command
Step 1
Modify an existing FDDI or FDDI NET-type
VLAN.
set vlan vlan [name name] [state {active |
suspend}] [said said] [mtu mtu]
Step 2
Verify the VLAN configuration. show vlan [vlan]
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