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Configuring basic MPLS ·············································································································································· 1
MPLS overview ·································································································································································· 1
Basic concepts ·························································································································································· 1
Structure of the MPLS network ································································································································· 3
LSP establishment and label distribution ················································································································ 3
MPLS forwarding ······················································································································································ 6
LDP ············································································································································································· 8
Protocols ···································································································································································· 9
MPLS configuration task list ··········································································································································· 10
Enabling the MPLS function ··········································································································································· 11
Configuration prerequisites ·································································································································· 11
Configuration procedure ······································································································································ 11
Configuring a static LSP ················································································································································ 11
Configuration procedure ······································································································································ 12
Establishing dynamic LSPs through LDP ······················································································································· 12
Configuring MPLS LDP capability ························································································································ 12
Configuring Local LDP session parameters ········································································································· 13
Configuring remote LDP session parameters ······································································································ 14
Configuring PHP ···················································································································································· 15
Configuring the policy for triggering LSP establishment ··················································································· 16
Configuring the label distribution control mode ································································································ 16
Configuring LDP loop detection ··························································································································· 17
Configuring LDP MD5 authentication ·················································································································· 18
Configuring LDP label filtering ····························································································································· 18
Maintaining LDP sessions ·············································································································································· 20
Configuring BFD for MPLS LDP ···························································································································· 20
Resetting LDP sessions ··········································································································································· 20
Managing and optimizing MPLS forwarding ············································································································· 21
Configuring MPLS MTU ········································································································································ 21
Configuring TTL processing mode at ingress ······································································································ 21
Sending back ICMP TTL exceeded messages for MPLS TTL expired packets ················································· 23
Configuring LDP GR ·············································································································································· 24
Configuring MPLS statistics ··········································································································································· 26
Setting the interval for reading statistics ············································································································· 26
Inspecting LSPs ······························································································································································· 26
MPLS LSP ping ······················································································································································· 26
MPLS LSP tracert ···················································································································································· 27
Configuring BFD for LSPs ······································································································································ 27
Configuring periodic LSP tracert ·························································································································· 28
Enabling MPLS trap························································································································································ 29
Displaying and maintaining MPLS ······························································································································· 29
Displaying MPLS operation ·································································································································· 29
Displaying MPLS LDP operation ··························································································································· 30
Clearing MPLS statistics ········································································································································ 31
MPLS configuration examples ······································································································································· 32
Configuring static LSPs ·········································································································································· 32
Configuring LDP to establish LSPs dynamically ·································································································· 34
Configuring BFD for LSP validity check ··············································································································· 38
