[j-nsp] J6350 Jumbo frame MTU and OSPF setting

[Ben Dale]

Hi Harris

On 01/10/2010, at 3:35 PM, Harris Hui wrote:

> I am trying to configure our J6350 fiber interface to MTU 9192 to get a
> better TCP throughput. However, I can only able to configure the MTU size
> below 1500, when I configure the MTU to 9192 and commit the changes, it
> still shows MTU 1500 on the physical interface.

I've only got a 2320 in front of me right now, but your configuration below works fine (and the MTU changes) - what version of JUNOS are you running?


> Do you have any experience on using Jumbo frame MTU size on the J6350? We
> are also running OSPF across the private circuit, is JUNOS support "OSPF
> ignore-mtu" like cisco?

No and we've been bitten by this before - I have raised an ER with my SE regarding this, but who knows how far away that will be.  You shouldn't need to use it if you control the routers on both ends (and the issue you are having with MTU goes away).

Cheers,

Ben