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Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated with an IP or IPv6

Address

To discover the LSR in a point-to-point MPLS LSP, associated with an IP or IPv6 prefix,

that causes MPLS packets to be discarded owing to the size of the packet exceeding the

MTU size:

•

Issue the trace mpls ip command with the data-size keyword.

host1:pe1#trace mpls ip 192.168.25.1/32 data-size 60

Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated with an L3VPN IP

or IPv6 Prefix

To discover the LSR in a point-to-point MPLS LSP, associated with an L3VPN IP or IPv6

prefix, that causes MPLS packets to be discarded owing to the size of the packet exceeding

the MTU size:

•

Issue the trace mpls l3vpn command with the data-size keyword.

host1:pe1#trace mpls l3vpn vrf pe11 10.2.3.21/32 data-size 60

Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated with a Martini Circuit

To discover the LSR in a point-to-point MPLS LSP, associated with a Martini circuit, that

causes MPLS packets to be discarded owing to the size of the packet exceeding the MTU

size:

•

Issue the trace mpls l2transport command with the data-size keyword.

host1:pe1#trace mpls l2transport FastEthernet1/0.1 data-size 60

Troubleshooting MTU Problems in a Point-to-Point MPLS LSP Associated with an RSVP-TE

Tunnel

To discover the LSR in a point-to-point MPLS LSP, associated with an RSVP-TE tunnel,

that causes MPLS packets to be discarded owing to the size of the packet exceeding the

MTU size:

•

Issue the trace mpls rsvp tunnel command with the data-size keyword.

host1:pe1#trace mpls rsvp tunnel west1 data-size 60

Troubleshooting MTU Problems in a Point-to-Point MPLSLSP Associated with a VPLS Instance

To discover the LSR in a point-to-point MPLS LSP, associated with a VPLS instance, that

causes MPLS packets to be discarded owing to the size of the packet exceeding the MTU

size:

•

Issue the trace mpls vpls command with the data-size keyword.

host1:pe1#trace mpls vpls vplsA sender-site-id 1 remote-site-id 2 data-size 60

Juniper JUNOSE 11.2.X BGP AND MPLS User Manual

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