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MPLS LDP Inbound Label Binding Filtering
Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) supports inbound label binding
filtering. You can use the MPLS LDP Inbound Label Binding Filtering feature to configure access control
lists (ACLs) for controlling the label bindings a label switch router (LSR) accepts from its peer LSRs.
• Finding Feature Information, page 41
• Restrictions, page 41
• Information about MPLS LDP Inbound Label Binding Filtering, page 41
• How to Configure MPLS LDP Inbound Label Binding Filtering, page 42
• Configuration Examples for MPLS LDP Inbound Label Binding Filtering, page 45
• Additional References, page 46
• Feature Information for MPLS LDP Inbound Label Binding Filtering Feature, page 47
• Glossary, page 48
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature
information and caveats, see the release notes for your platform and software release. To find information
about the features documented in this module, and to see a list of the releases in which each feature is
supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Restrictions
Inbound label binding filtering does not support extended ACLs; it only supports standard ACLs.
Information about MPLS LDP Inbound Label Binding Filtering
The MPLS LDP Inbound Label Binding Filtering feature may be used to control the amount of memory
used to store LDP label bindings advertised by other routers. For example, in a simple MPLS Virtual
Private Network (VPN) environment, the VPN provider edge (PE) routers may require LSPs only to their
peer PE routers (that is, they do not need LSPs to core routers). Inbound label binding filtering enables a PE
router to accept labels only from other PE routers.
MPLS LDP Configuration Guide, Cisco IOS Release 12.4
41