Hi guys,
I've been on the list for as long as I cannot even remember.
So just you know, I'm not new at this.

This is no easy task, that's why I came here looking for help.
I'm sorry if I brought anguish to the experts on the list!
I thought I could bring something that someone may have experienced before.

I haven't solved this yet, but at least I've received some
valuable suggestions and I Thank you!

About all the details of the connections, numbers of peerings, PNI's and
IXP's I have left them out, since I figured this additional information
could make things worse.

ISP 1 <router01> ====20KM====<Router>====20KM====<router02> ISP2

The ISP connections are all 10G.
I don't believe these routers are DFZ capable.
All the routers are well capable and already receive the full routes.
The connections between these routers are 40G.

Best regards,


On Thu, Dec 26, 2024 at 12:53 AM Bryan Fields <br...@bryanfields.net> wrote:

> On 12/25/24 6:18 PM, Randy Bush wrote:
> > where does one go for is-is help?  the mtu issie can be painful!!!
>
> I think here would be good too.  I recently had to do this between a Cisco
> 3945e and a Juniper, and from my unrevised notes:
>
> vlan {
>   unit 405 {
>     family iso {
>     # holy shit this is important.  CISCO and Juniper will not talk unless
> the
> MTU is set
>         mtu 1492;
>       }
>    }
> }
>
> :-)
>
> --
> Bryan Fields
>
> 727-409-1194 - Voice
> http://bryanfields.net
>

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