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12 MPLS technology management
LDP configuration
Configuration algorithm
Configuration example
Configuring session parameters in LDP
Algorithm for setting Hello holdtime and Hello interval in the global LDP configuration
Algorithm for setting Hello holdtime and Hello interval for address family
Algorithm for setting Keepalive holdtime parameter in the global LDP configuration
Algorithm for setting Keepalive holdtime parameter for the specific neighbor
Configuration example
Configuring session parameters in targeted-LDP
Algorithm for setting Hello holdtime, Hello interval and Keepalive holdtime for the LDP process
Algorithm for setting Hello holdtime, Hello interval and Keepalive holdtime for the specific
neighbor
Configuration example
LDP tag filtering configuration
Configuration algorithm
Configuration example
L2VPN Martini mode configuration
L2VPN VPWS configuration algorithm
L2VPN VPWS configuration example
L2VPN VPLS configuration algorithm
L2VPN VPLS configuration example
L2VPN Kompella mode configuration
L2VPN VPLS configuration algorithm
L2VPN VPLS configuration example
L3VPN configuration
Configuration algorithm
Configuration example
MPLS traffic balancing
Configuration example
Operation with the bridge domain within MPLS
Assignment of MTU when operating with MPLS
12.1 LDP configuration
LDP is a tag distribution protocol. To find the neighbors hello messages are sent to the multicast address
224.0.0.2. When exchanging hello messages, routers learn each other's transport addresses. A router with a
bigger address initializes the TCP session. After checking the parameters, the LDP session is considered
established.
ESR routers support the following LDP operation modes:
Tag information exchange mode — Downstream Unsolicited;
Mechanism for controlling the distribution of tags — Independent Label Distribution Control;
Label retention mode — Liberal Label Retention;
On interfaces where LDP and MPLS switching are enabled, the firewall must be disabled.
The current version LDP only works with IPv4 addresses.
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