Cisco 7609 User Manual

9-9
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
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Chapter 9 Configuring VLANs
Configuring VLANs
• When a Cisco 7600 series router is configured as a VTP server, you can configure FDDI and Token
Ring VLANs from the router.
• You must configure a TrBRF before you configure the TrCRF (the parent TrBRF VLAN you specify
must exist).
Configuring VLANs
These sections describe how to configure VLANs:
• VLAN Configuration Options, page 9-9
• Creating or Modifying an Ethernet VLAN, page 9-10
• Assigning a Layer 2 LAN Interface to a VLAN, page 9-12
• Configuring the Internal VLAN Allocation Policy, page 9-12
• Mapping 802.1Q VLANs to ISL VLANs, page 9-13
Note • With releases 12.1(11b)E and later, when you are in configuration mode you can enter EXEC mode
commands by entering the do keyword before the EXEC mode command.
• VLANs support a number of parameters that are not discussed in detail in this section. For complete
information, refer to the Cisco 7600 Series Router Cisco IOS Command Reference publication.
VLAN Configuration Options
These sections describe the VLAN configuration options:
• VLAN Configuration in Global Configuration Mode, page 9-9
• VLAN Configuration in VLAN Database Mode, page 9-10
VLAN Configuration in Global Configuration Mode
Note Releases 12.1(11b)E and later support VLAN configuration in global configuration mode.
If the router is in VTP server or transparent mode (see the “Configuring VTP” section on page 8-6), you
can configure VLANs in global and config-vlan configuration modes. When you configure VLANs in
global and config-vlan configuration modes, the VLAN configuration is saved in the vlan.dat files. To
display the VLAN configuration, enter the show vlan command.
If the switch is in VLAN transparent mode, use the copy running-config startup-config command to
save the VLAN configuration to the startup-config file. After you save the running configuration as the
startup configuration, use the show running-config and show startup-config commands to display the
VLAN configuration.

Cisco 7609 Specifications

General

Chassis Slots	9
Switch Fabric Capacity	720 Gbps
Power Supply Options	AC or DC
Product Type	Router
Form Factor	Rack-mountable
Supported Line Cards	Various Cisco 7600 Series line cards
Operating System	Cisco IOS
Management	CLI, SNMP
Forwarding Performance	400 Mpps
Maximum Power Consumption	4000 Watts
Redundancy	Yes
Interfaces/Ports	Various, depending on line cards installed