[j-nsp] Path MTU Discovery - MPLS VPN

[tim.hunt at bt.com]

Hi,

I've been trying to  get Path MTU Discovery working for M/J-series,
appreciate that the M-series requires vrf-mtu-check <id-10380545.html>
setting. Having done this I've tried testing it by launching Pings (DF
set) with a larger MTU than the link, but I'm getting no response at all
- expecting ICMP response.
Has anyone any experience of the above? What stops it from working? - I
have vrf-table-label set on some CE/PE devices. Is my test valid?
Thanks,
Tim.