For a TCP session, Keepalive holdtime is also a matching parameter similar to Hold timer. Keepalive interval is
calculated automatically and equals Keepalive holdtime/3. Keepalive holdtime can be set globally as well as
for each neighbor. The timer set for a particular neighbor is a higher priority.
ESR# show running-config mpls
mpls
ldp
router-id 4.4.4.4
keepalive 30// установлен в глобальной конфигурации LDP
neighbor 1.1.1.1
keepalive 55// установлен в соседа с адресом 1.1.1.1
exit
exit
ESR# sh mpls ldp neighbor 1.1.1.1
Peer LDP ID: 1.1.1.1; Local LDP ID 4.4.4.4
State: Operational
TCP connection: 1.1.1.1:646 - 4.4.4.4:56668
Messages sent/received: 401/401
Uptime: 02:00:24
Peer holdtime: 55
Keepalive interval: 18
LDP discovery sources:
12.2.1 Algorithm for setting Hello holdtime and Hello interval in the global LDP configuration
Step Description Command Keys
1 Configure the LDP (see section LDP configuration)
2 In the LDP configuration mode, set
Hello holdtime
esr(config-ldp)# discovery hello
holdtime <TIME>
<TIME> — Time in seconds in
the range of [3..65535]
Default value:15
3 In the LDP configuration mode, set
Hello interval
esr(config-ldp)# discovery hello
interval <TIME>
<TIME> — Time in seconds in
the range of [3..65535]
Default value: 5
12.2.2 Algorithm for setting Hello holdtime and Hello interval for address family
Step Description Command Keys
1 Configure the LDP (see section LDP configuration)
2 In the LDP address family configuration
mode, set Hello holdtime on the
specified interface
esr(config-ldp-af-ipv4-if)#
discovery hello holdtime <TIME>
<TIME>— time in the range of
[3..65535] seconds
Default value: 15
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