[f-nsp] OSPF EXST/BDR

[Josh Galvez]

Greg,

Yes, you can determine the current MTU on any NetIron device by doing:

IP MTU
#show ip int e 1/6 | in mtu
  encapsulation: ETHERNET, mtu: 1500

Interface Frame Size
#show int e 1/6 | in MTU
  Internet address is 10.9.1.17/27, MTU 1548 bytes, encapsulation ethernet

Then change that MTU by:

conf t
int e 1/6
ip mtu DECIMAL   # (IP packet mtu size, default:1500)
ipv6 mtu DECIMAL   # (IP packet mtu size, default:1500)

Or for details on making global ip mtu and frame size changes see:

Change MTU
http://www.brocade.com/content/html/en/configuration-guide/netiron-05900-switchingguide/GUID-D87BD747-C4A4-4BF3-B12B-BD716A74075F.html

Change MTU Global
http://www.brocade.com/content/html/en/configuration-guide/netiron-05900-switchingguide/GUID-44AB8F87-B478-4468-BEFB-63C71B2E665C.html

Change Frame Size
http://www.brocade.com/content/html/en/configuration-guide/netiron-05900-switchingguide/GUID-A9922886-E6E2-4191-A787-BE56E22B097F.html

-Josh

On Wed, Sep 16, 2015 at 4:10 AM, Gregory Agerba <ga at hotmail.ch> wrote:

> Hi,
>
> While trying to setup an OSPF session between a Brocade XMR 4000 and a
> Brocade CES2024C, I get the following error:
>
> EXST/BDR
>
> The same configuration between a Brocade CES and a CER works fine. I am
> guessing the problem has to do with MTU? Is there a way to force the mtu on
> the interface of the XMR, or any specific trick to be aware of?
>
> Many Thanks,
> Greg.
>
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