Hi.
An MPLS LDP ping sweep returns an MTU result of 1488 bytes.
[edit]
lab@vmx-1:PE1# run ping mpls ldp 2.2.2.2 sweep
88! 5044. 2568. 1328! 1948. 1640. 1484! 1564. 1524. 1504. 1496. 1492. 1488!
--- lsp ping sweep result---
Maximum Transmission Unit (MTU) is 1488 bytes
Why is the MPLS MTU only 1488 bytes? Juniper says this is to accommodate 3 4-byte MPLS headers. But the MPLS ping is using only one MPLS header, so the MPLS MTU should be 1496 bytes. Why is it only 1488 bytes?
Thanks,
Deepak
Juniper Business Use Only