[c-nsp] portchannel load balancing between L3 switch and router

[Arie Vayner (avayner)]

Pavel,

Is that the same SCE, or two separate SCEs?
If it's the same one, then there is no problem. The SCE has a single global session state for all the ports.

If these are separate SCEs, then you may want to use PBR (using source IP on one side and destination IP on the other side). This solution is called MGSCP (multi-gigabit service control point). In this case you would need to break the etherchannel and use L3 interfaces... I can provide more details if relevant.

Arie

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Pavel Dimow
Sent: Wednesday, April 07, 2010 18:32
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] portchannel load balancing between L3 switch and router

The problem is that between ASR and 7600 is SCE, and as I don't have
enough experience
with it, the per flow load balancing can be a problem as I have found that SCE
requires incoming and outgoing packets to use the same port, or I am
missing something?

On Tue, Apr 6, 2010 at 4:56 PM, Arie Vayner (avayner) <avayner at cisco.com> wrote:
> Elmar,
>
> Please check this link:
> http://www.cisco.com/en/US/docs/ios/ios_xe/lanswitch/configuration/guide
> /lsw_cfg_flwload_xe_ps9587_TSD_Products_Configuration_Guide_Chapter.html
>
> You should be looking at the "Flow Based" option...
>
> Per the command reference
> (http://www.cisco.com/en/US/docs/ios/interface/command/reference/ir_l1.h
> tml#wp1022040) This is available since IOS XE 2.5
>
> Arie
>
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Elmar K. Bins
> Sent: Tuesday, April 06, 2010 17:13
> To: Pavel Dimow
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] portchannel load balancing between L3 switch and
> router
>
> Re Pavel,
>
> paveldimow at gmail.com (Pavel Dimow) wrote:
>
>> port-channel load-balancing vlan-manual
>>
>> and I understand that I can't have one vlan loadbalanced across two
>> portchannel members but
>> only the one at the time and second member is standby.
>>
>> Am I right or there is another solution?
>
> I have tried the same thing (trunk-channeling), and it just does not
> work on ASRs (yet?).
>
> So yes, you are right, there seems to be no other solution right now.
> Maybe someone from Cisco can tell us whether this issue will be
> remedied.
>
> Yours,
>        Elmar.
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