[j-nsp] mx960 to mx960 via ciena 6500 - mtu smaller in the middle

sthaug at nethelp.no sthaug at nethelp.no
Mon Apr 16 16:14:46 EDT 2018


> See juniper interface MTU is set to max 16000 bytes. but when I ping I can
> only get 9584 bytes through to the other side of the link.  This mx960 is
> linked to another mx960, but Ciena 6500 dwdm is in between the mx960's.
> 
> Is there any reason why I should be concerned that currently Ciena tells us
> that they only support 9600 byte MTU and that I have 16000 set on my MX960's
> ?

If you *want* to create problems for yourself that are hard to debug -
by all means continue.

Personally I strongly prefer to have consistent MTUs.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no


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