[rbak-nsp] link-group access on SE-100

[Tudor Capatina]

Hello Marcin,

The reason why it made sense to me is the need for more bandwidth for the subscriber circuits. So the only solution would be to look at an upgrade of the platform? Or in my specific case i guess i could split the 200 vlan's on two ports - 100 each, it should get me more bandwidth - and not use link-group?

Would it make any difference if i would have the constituent ports of the link-group on different MIC cards in the SE-100?

Thanks!

Best regards,
Tudor Capatina
Xenosite BV
________________________________
From: redback-nsp [redback-nsp-bounces at puck.nether.net] on behalf of Marcin Kuczera [marcin at leon.pl]
Sent: 15 August 2014 19:25
To: redback-nsp at puck.nether.net
Subject: Re: [rbak-nsp] link-group access on SE-100

On 2014-08-15 16:09, Tudor Capatina wrote:
Hi folks,

In my opinion - access mode on SE100 makes no sense...
SmartEdge in this mode sends traffic only via signle link.
It makes sense when you have 2 linecards and link-group spans between linecards.
Than, in case of linecard crash traffic continues to flow.

Other modes - dot1q - will do load sharing, but you can't have subscriber circuits on them (pppoe, clips).

Marcin



I configured an access link-group between a SE-100 and a Brocade MLX. The problem i face is that traffic from the Brocade towards the Redback is being split among the links but the other way around, the Redback sends traffic using just one link. I have set the link-group both with LACP and static but the result was the same.
I have tried both round-robin / interface-based, created the link-group both as access and access-economical,  had the link-group both static and lacp - same result was reached.
I was wondering if this is a limitation of the SE-100 unit or i am missing something?

Brocade config and some outputs:
lag "se100" dynamic id 1
 ports ethernet 1/1 to 1/2
 primary-port 1/1
 deploy
 port-name "rd1-se100-lag" ethernet 1/1
 port-name "rd1-se100-lag" ethernet 1/2

#sh int e 1/1 | i rate
  30 second input rate: 111758468 bits/sec, 19734 packets/sec, 11.49% utilization
  30 second output rate: 64714241 bits/sec, 11604 packets/sec, 6.65% utilization
#sh int e 1/2 | i rate
  30 second input rate: 34 bits/sec, 0 packets/sec, 0.00% utilization << not used
  30 second output rate: 33963516 bits/sec, 10184 packets/sec, 3.56% utilization

Redback config and some outputs:

link-group rd2-lag access
 encapsulation dot1q
 dot1q pvc on-demand 1000 through 1199 aaa
   idle-down 600
 maximum-links 2
 lacp active
 protect-group incoming-port

#sh link-group rd2-lag det

Link-Group: rd2-lag, ID   : 27, State : Up
------------------------------------------------------------------------------
Ccct count      : 2                              Grouping        : LoadShare
Card Type       : carrier                        Type            : access
Bindings        : Unbound                        Minimum-links   : 1
Maximum-links   : 2
Prot-Group-Type : round-robin
Internal Handle : 255/22:1:28/1/1/4610
Description     :
Constituent Circuits:
  1. 2/15              (Up  )|  0.13%
  2. 2/16              (Up  )|  0.00%

#sh la act
                Port    Port          Oper     Recv          Seln
Lg-id   Port    State   Priority      key      State         State
----------------------------------------------------------------------
27       2/15   0x3f    32767         27       exchg         active
27       2/16   0x3f    32767         27       exchg         active

Just as a note, non-access link-groups btw the Brocade MLX and the Redback unit work fine.

Best regards,
Tudor Capatina



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+48 32 440 80 71/ marcin.kuczera at leon.pl<mailto:marcin.kuczera at leon.pl>

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