IPMP in a different subnet and router.

IPMP in a different subnet and router.

Post by Colin B » Thu, 26 Jan 2006 03:48:11



Hey all;

We're having some problems with IPMP and our switches here, and have come up
with a workaround for it. Can someone validate if the following (a) will
work properly, and (b) not cause problems? Bonus points if anyone knows
whether it's supported or not.

The config is this:

- ge0: primary interface in 10.10.3/24, failover address in 10.10.4/24
- ge1: failver address in 10.10.4/24.
- Default route for 10.10.4/24 being some other machine in 10.10.4, but
  not the actual gateway.

The problem is that our gateway router starts to drop pings directed at
itself when the load gets too heavy.

Anyways, any ideas on this? Better suggeestions?

Thanks,
Colin

 
 
 

IPMP in a different subnet and router.

Post by ML Starke » Thu, 26 Jan 2006 05:53:49


Colin B. wrote On 01/24/06 13:48,:

Quote:> Hey all;

> We're having some problems with IPMP and our switches here, and have come up
> with a workaround for it. Can someone validate if the following (a) will
> work properly, and (b) not cause problems? Bonus points if anyone knows
> whether it's supported or not.

> The config is this:

> - ge0: primary interface in 10.10.3/24, failover address in 10.10.4/24
> - ge1: failver address in 10.10.4/24.
> - Default route for 10.10.4/24 being some other machine in 10.10.4, but
>   not the actual gateway.

> The problem is that our gateway router starts to drop pings directed at
> itself when the load gets too heavy.

A common problem with routers/gateways and ICMP, but they are designed
to drop/degrade ICMP when necessary.  Which is why you can identify 5
hosts to act as test targets using "host-routes".

If you have access to the spectrum part of sunsolve, you can get the
details on that (and other scenarios) in this doc:

Document ID:    70062
Title:  Summary of typical IPMP Configurations

- Show quoted text -

Quote:

> Anyways, any ideas on this? Better suggeestions?

> Thanks,
> Colin


 
 
 

IPMP in a different subnet and router.

Post by Colin B » Sat, 28 Jan 2006 06:29:04



> Colin B. wrote On 01/24/06 13:48,:
>> Hey all;

>> We're having some problems with IPMP and our switches here, and have come up
>> with a workaround for it. Can someone validate if the following (a) will
>> work properly, and (b) not cause problems? Bonus points if anyone knows
>> whether it's supported or not.

>> The config is this:

>> - ge0: primary interface in 10.10.3/24, failover address in 10.10.4/24
>> - ge1: failver address in 10.10.4/24.
>> - Default route for 10.10.4/24 being some other machine in 10.10.4, but
>>   not the actual gateway.

>> The problem is that our gateway router starts to drop pings directed at
>> itself when the load gets too heavy.

> A common problem with routers/gateways and ICMP, but they are designed
> to drop/degrade ICMP when necessary.  Which is why you can identify 5
> hosts to act as test targets using "host-routes".

> If you have access to the spectrum part of sunsolve, you can get the
> details on that (and other scenarios) in this doc:

> Document ID:    70062
> Title:  Summary of typical IPMP Configurations

Excellent! A belated thanks for this. This doc is exactly what we needed.

Cheers,
Colin