Cisco 7604 User Manual

24-7
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 24 Configuring PFC3BXL and PFC3B Mode Multiprotocol Label Switching
PFC3BXL and PFC3B Mode MPLS Label Switching
• MPLS VPN Hot Standby Router Protocol (HSRP) Support—This feature ensures that the HSRP
virtual IP address is added to the correct IP routing table and not to the global routing table. See this
publication:
http://www.cisco.com/en/US/docs/ios/12_1t/12_1t3/feature/guide/dt_hsmp.html
• OSPF Sham-Link Support for MPLS VPN—This feature allows you to use a sham-link to connect
VPN client sites that run the Open Shortest Path First (OSPF) protocol and share OSPF links in a
MPLS VPN configuration. See this publication:
http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ospfshmk.html
• Any Transport over MPLS (AToM)—Transports Layer 2 packets over an MPLS backbone. See the
“Any Transport over MPLS” section on page 24-13.
MPLS Guidelines and Restrictions
When configuring PFC3BXL or PFC3B MPLS, follow these guidelines and restrictions:
• PFC3BXL or PFC3B mode supports up to 8 load-shared paths. Cisco IOS releases for other
platforms support only 8 load-shared paths.
• PFC3BXL or PFC3B mode supports MTU checking and fragmentation.
Note Fragmentation is supported with software (for IP to MPLS path). See the mtu command in the
Cisco IOS Master Command List, Release 12.2SX.
Note For information on other limitations and restrictions, see the “MPLS VPN Guidelines and Restrictions”
section on page 24-11 and the “EoMPLS Guidelines and Restrictions” section on page 24-14.
PFC3BXL and PFC3B Mode MPLS Supported Commands
PFC3BXL and PFC3B mode MPLS supports these commands:
• mpls ip default route
• mpls ip propagate-ttl
• mpls ip ttl-expiration pop
• mpls label protocol
• mpls label range
• mpls ip
• mpls label protocol
• mpls mtu
For information about these commands, see these publications:
http://www.cisco.com/en/US/docs/ios/12_2/switch/command/reference/fswtch_r.html

Cisco 7604 Specifications

General

Brand	Cisco
Model	7604
Category	Network Router
Language	English