MPLS: Change MTU - - The MPLS MTU to support Jumbo frames

PE1#sh mpls forwarding-table de
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or VC or Tunnel Id Switched interface
16 Pop Label 10.1.1.2/32 0 Fa0/0.21 172.16.12.2
MAC/Encaps=18/18, MRU=1504, Label Stack{} --> Default
CA040FE80008CA030FE80008810000158847
No output feature configured

PE1(config-if)#mtu 9216
% Interface FastEthernet0/0 does not support user settable mtu.

PE1(config-if)#mpls mtu ?
<1501-1524> MTU (baby giants bytes)
<64-1500> MTU (bytes)

PE1(config-if)#mpls mtu 1524

PE1#sh mpls forwarding-table de
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or VC or Tunnel Id Switched interface
16 Pop Label 10.1.1.2/32 0 Fa0/0.21 172.16.12.2
MAC/Encaps=18/18, MRU=1504, Label Stack{} --> Default, Stll no change ? Why
CA040FE80008CA030FE80008810000158847
No output feature configured


Now lets change it on subinterface


PE1(config)#int f0/0.31
PE1(config-subif)#mpls mtu 1524
PE1(config-subif)#^Z
PE1#
00:55:38: %SYS-5-CONFIG_I: Configured from console by console
PE1#sh mpls forwarding-table de
Local Outgoing Prefix Bytes Label Outgoing Next Hop
Label Label or VC or Tunnel Id Switched interface
16 Pop Label 10.1.1.2/32 0 Fa0/0.21 172.16.12.2
MAC/Encaps=18/18, MRU=1528, Label Stack{} -->Changes show up,
CA040FE80008CA030FE80008810000158847
No output feature configured

MPSL: LDP backoff

PE1#sh mpls ldp parameters
Protocol version: 1
Session hold time: 180 sec; keep alive interval: 60 sec
Discovery hello: holdtime: 15 sec; interval: 5 sec
Discovery targeted hello: holdtime: 90 sec; interval: 10 sec
Downstream on Demand max hop count: 4
LDP for targeted sessions
LDP initial/maximum backoff: 15/120 sec -->Defaults
LDP loop detection: off
PE1

PE1(config)#mpls ldp backoff 60 240

PE1#sh mpls ldp parameters
Protocol version: 1
Session hold time: 180 sec; keep alive interval: 60 sec
Discovery hello: holdtime: 15 sec; interval: 5 sec
Discovery targeted hello: holdtime: 90 sec; interval: 10 sec
Downstream on Demand max hop count: 4
LDP for targeted sessions
LDP initial/maximum backoff: 60/240 sec -->Modified
LDP loop detection: off
PE1#

MPLS: Maximum Hop count for Lable Bindings dont exceed x hops

global
mpls ldp maxhops 4

PE1#sh mpls ldp parameters
Protocol version: 1
Session hold time: 180 sec; keep alive interval: 60 sec
Discovery hello: holdtime: 15 sec; interval: 5 sec
Discovery targeted hello: holdtime: 90 sec; interval: 10 sec
Downstream on Demand max hop count: 4
LDP for targeted sessions
LDP initial/maximum backoff: 15/120 sec
LDP loop detection: off
PE1#

MPLS: Enable MPLS to detect Loops

Global
mpls ldp loop-detection

MPLS: Log LDP neighbor Changes

Global
mpls ldp logging neighbor-changes

MPLS: RFC3036 = LDP

MPLS: RFC3036 = LDP

MPLS LDP password

mpls ldp router-id lo0
mpls ldp neighbor 20.6.1.1 password CISCO