[f-nsp] Double-switched (looped) traffic on Netiron MLX

[Eldon Koyle]

I wonder if the issue is the fact that Brocade uses the same MAC
address for all VEs, and the device is doing the wrong thing.

Has anyone tried setting up vrrp on a ve in this topology (even though
it is a single device) to see if it does the right thing?  That should
cause the traffic to the VRRP IP address to use a different MAC
address...

I think Frank proposed this as a solution to a different problem once,
although I never heard if it worked.

-- 
Eldon Koyle


On Wed, Mar 2, 2016 at 7:00 AM, Nick Cutting <ncutting at edgetg.co.uk> wrote:
> Or better yet, build a network without two gateways on the same LAN. (or set the default gateway to the actual exit point)
> Redirects were used to stop extra hops in the broadcast domain.
>
> 90 percent of people disable these without knowing why.
>
> -----Original Message-----
> From: foundry-nsp [mailto:foundry-nsp-bounces at puck.nether.net] On Behalf Of Franz Georg Köhler
> Sent: 02 March 2016 08:39
> To: foundry-nsp at puck.nether.net
> Subject: Re: [f-nsp] Double-switched (looped) traffic on Netiron MLX
>
> On Tue, Mar 01, 2016 at 08:29:57AM -0700, Josh Galvez wrote:
>> I had a similar problem with a VE in a VPLS.  Try this:
>>
>> device(config)# no ip icmp redirects
>>
>> http://www.brocade.com/content/html/en/configuration-guide/NI_05800a_S
>> WITCHING/GUID-04EDFD31-E5FB-4593-8434-0DF8EDB3249E.html
>
> Hello,
>
> I have already set no ip icmp redirects.
>
> While this is not a default setting, it is generally a good idea to disable icmp redirects because the system would otherwise tend to high CPU utilization as it is analyzing traffic to send icmp redirects (at least if the traffic is leaving on the same interface).
> As most systems ignore ICMP redirects anyway, there is no benefit in keeping the default option enabled and I strongly recommend to always disable it.
>
>
>
> Best regards,
>
> Franz Georg Köhler
>
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