Yes, per-packet really means per-flow. The default is per-prefix. Have to use 
mlpp to get per-packet.

Regards




 

-----Original Message-----
From: juniper-nsp-boun...@puck.nether.net 
[mailto:juniper-nsp-boun...@puck.nether.net] On Behalf Of Paul Stewart
Sent: Thursday, May 20, 2010 5:52 PM
To: juniper-nsp@puck.nether.net
Subject: [j-nsp] Default OSPF Equal Cost Behaviour - EX Switches

Hi there....

 

I opened a JTAC ticket this evening and looking for some opinion - after I 
closed the case I'm not sure of what I was told...

 

The ticket was opened because leaving a EX4200 VC there are two GigE 
connections going to a Cisco 6500 - so equal cost OSPF.  According to the 
routing table only one of those links was being selected (there was no default 
per packet or per destination load balancing occurring).

 

The guy at JTAC suggested a policy as:

 

p...@dis1.lansdowne1> show configuration policy-options policy-statement 
load-balancing

then {

    load-balance per-packet;

}

 

p...@dis1.lansdowne1> show configuration protocols ospf

export [ ospf_redistributes load-balancing ];

area 0.0.0.0 {

    interface vlan.130;

    interface vlan.904;

    interface vlan.971;

}

 

As there is quite a bit of voice traffic involved I asked if this was really 
per packet or if it was "per flow" as he had mentioned.  I was told that even 
though the configuration uses the wording "per-packet" that it's really per 
flow occurring.  It does appear to actually be some kind of source/destination 
hash similar or if not identical to default Cisco behaviour ... can anyone 
confirm that for me?  I'd rather avoid per packet load balancing if possible 
and stick to a round "round robin" per destination format if possible...

 

It's running JTAC recommended JunOS 10.0R3.10

 

Thanks for your input,

 

Paul

 

 

 

 

_______________________________________________
juniper-nsp mailing list juniper-nsp@puck.nether.net 
https://puck.nether.net/mailman/listinfo/juniper-nsp

_______________________________________________
juniper-nsp mailing list juniper-nsp@puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp

Reply via email to