Cisco 7609 User Manual

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Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
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Chapter 9 Configuring VLANs
Understanding How VLANs Work
Configurable VLAN Parameters
Note • Ethernet VLAN 1 uses only default values.
• Except for the VLAN name, Ethernet VLANs 1006 through 4094 use only default values.
• With Release 12.1(13)E and later releases, you can configure the VLAN name for Ethernet VLANs
1006 through 4094.
You can configure the following parameters for VLANs 2 through 1001:
• VLAN name
• VLAN type (Ethernet, FDDI, FDDI network entity title [NET], TrBRF, or TrCRF)
• VLAN state (active or suspended)
• Security Association Identifier (SAID)
• Bridge identification number for TrBRF VLANs
• Ring number for FDDI and TrCRF VLANs
• Parent VLAN number for TrCRF VLANs
• Spanning Tree Protocol (STP) type for TrCRF VLANs
Understanding Token Ring VLANs
The following section describes the two Token Ring VLAN types supported on network devices running
VTP version 2:
• Token Ring TrBRF VLANs, page 9-3
• Token Ring TrCRF VLANs, page 9-4
Note Cisco 7600 series routers do not support Inter-Switch Link (ISL)-encapsulated Token Ring frames.
When a Cisco 7600 series router is configured as a VTP server, you can configure Token Ring VLANs
from the router.
Token Ring TrBRF VLANs
Token Ring Bridge Relay Function (TrBRF) VLANs interconnect multiple Token Ring Concentrator
Relay Function (TrCRF) VLANs in a switched Token Ring network (see Figure 9-1). The TrBRF can be
extended across network devices interconnected with trunk links. The connection between the TrCRF
and the TrBRF is referred to as a logical port.

Cisco 7609 Specifications

General

Brand	Cisco
Model	7609
Category	Network Router
Language	English