Configuring Layer 3 Interfaces - Cisco 7609 Configuration Manual

Configuring Layer 3 Interfaces

This chapter contains information about how to configure Layer 3 interfaces on the Cisco 7600 series
routers, which supplements the information and procedures in the Release 12.1 publications at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/index.htm
This chapter consists of these sections:
Configuring IP Routing and Addresses, page 12-2
•
• Configuring IPX Routing and Network Numbers, page 12-5
Configuring AppleTalk Routing, Cable Ranges, and Zones, page 12-6
•
• Configuring Other Protocols on Layer 3 Interfaces, page 12-7
For complete syntax and usage information for the commands used in this chapter, refer to the
Note •
Cisco 7600 Series Router Cisco IOS Command Reference publication and the Release 12.1
publications at this URL:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/index.htm
Release 12.1(13)E and later releases support configuration of 4,096 Layer 3 VLAN interfaces.
•
–
–
• With releases earlier than Release 12.1(13)E, an MSFC2 with either Supervisor Engine 1 or
Supervisor Engine 2 supports a combined maximum of 1,000 Layer 3 VLAN interfaces and Layer 3
ports.
• With releases earlier than Release 12.1(13)E, an MSFC with Supervisor Engine 1 supports a
maximum of 256 Layer 3 VLAN interfaces.
To support VLAN interfaces, create and configure VLANs and assign VLAN membership to
•
Layer 2 LAN ports. For more information, see
"Configuring VTP."
• Cisco 7600 series routers support Layer 3 trunks only on the 4-port Gigabit Ethernet WAN modulea
(OSM-4GE-WAN and OSM-2+4GE-WAN+). You cannot configure subinterfaces or use the
encapsulation keyword on LAN ports. Cisco 7600 series routers support Layer 2 trunks and
Layer 3 VLAN interfaces, which provide equivalent capabilities for LAN ports. See
"Configuring LAN Ports for Layer 2 Switching"
section on page
78-14064-04
We recommend that you configure a combined total of no more than 2,000 Layer 3 VLAN
interfaces and Layer 3 ports on an MSFC2 with either Supervisor Engine 1 or Supervisor
Engine 2.
We recommend that you configure a combined total of no more than 1,000 Layer 3 VLAN
interfaces and Layer 3 ports on an MSFC.
12-2.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
C H A P T E R
Chapter 9, "Configuring VLANs"
and the "Configuring IP Routing and Addresses"
12
and Chapter 8,
Chapter 7,
12-1