IS-IS on FRR - Is Anyone Running It?

Radu-Adrian Feurdean nanog at
Mon Apr 6 12:52:19 UTC 2020

On Mon, Apr 6, 2020, at 10:58, Mark Tinka wrote:
> Within our core, we run 9,178 bytes (which translates to 9,192 bytes on
> Junos and IOS XR), to support the transport of Jumbo frames for

Beware of bad dog^H^H^H NCS model. On NCS5000 (don't know about 5500 - those arrived months after me leaving $job[-1]) you will get the nasty surprise of discovering that they have some limits to 9150(IP)/9164(eth), even if you can set the mtu higher (to an unusable 9192 or 92zz bytes).

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