On 9 March 2016 at 22:28, Nick Hilliard <nick@foobar.org> wrote:
iirc, we had problems with a bunch of ios based platforms. It worked fine on junos / xr platforms. I share your surprise that this could even have caused a problem, but it did.
This is very poor reason to kill it for everyone, 'I recall I may have found platform where it maybe didn't work'. Yet, it's super common go have L3Termination - L2Aggregation - Customer. And sell various MTU options to customers, even use the L2Aggregation as core between two L3Termination. All of these require per logical-interface L3 MTU, while L2 MTU is usually set to max.
From Cisco, I've done this at least on 720x, 7301, 7304 NPE/NSE, 7600, 6500, GSR, CRS-1, ASR1k, ASR9k, 2600, 3600, ASR9k, probably some others too.
-- ++ytti