[c-nsp] Re: [j-nsp] load balancing between multiple BGP links

[Alok]

Am not saying use it as a metric/make metric func(link_band) like in EIGRP,
just use instant value when scheduling/flow setup if there are indeed equal
cost paths to a destination

For example, it is typical to see ISPs back up high util link with low util
links between 2 critial peers, (or atleast I have seen it), and I see no
reason why I should simply not be allowed to use them both
why not use both?
Multilink is one option, this does not need that encap-mlppp either ..right?

Bundle links i think was there in some MPLS draft.....

any ideas why it is like this now?

-thanks
Alok
----- Original Message ----- 
From: "Oliver Boehmer (oboehmer)" <oboehmer at cisco.com>
To: "Alok" <alokdube at hotpop.com>; <cisco-nsp at puck.nether.net>
Sent: Wednesday, September 14, 2005 9:11 PM
Subject: RE: [c-nsp] Re: [j-nsp] load balancing between multiple BGP links


Alok <> wrote on Wednesday, September 14, 2005 3:42 PM:


> Perhaps "per packet" with BGP link bandwidth would be good infact  i
> think.. .
> or perhaps for flow based, flow setup based on "actual util at the
> time of setup".... though nothing still seems to beat per packet :-)
> with link bandwidth i guess...

I think we're past using the current link utilization for any routing
protocol metrics calculation. (E)IGRP has this option (disabled by default),
but it caused many issues with oszillating traffic/etc, as far as I recall.

There is OER (for enterprise networks) which tries to do some form of
load-sharing, but this doesn't scale to be used in ISP networks.

oli

> ----- Original Message -----
> From: "Rafal Szarecki (WA/EPO)" <rafal.szarecki at ericsson.com>
> To: "Alok" <alokdube at hotpop.com>
> Sent: Wednesday, September 14, 2005 7:01 PM
> Subject: RE: [j-nsp] load balancing between multiple BGP links
>
>
> Alok,
>
>>
>> EBGP multihop between them over 2 links
>> link 1 =10Mbps
>> link 2 = 20 Mbps
>>
>> total traffic = 25Mbps
>
> Perpetum mobile? Or statistics inacuracy.
>
>> Is there a way to ensure that link 1 doesnt get choked?
>
> - Bgp multipath is simpler to run.
> - Is it Juniper? If the pleas check forwarding option to identyfy
> loadbalancing hash alghoritm.
>
http://www.juniper.net/techpubs/software/junos/junos73/swconfig73-policy/html/policy-actions-config13.html#1021911
>
> Rafa³ Szarecki JNCIE
>
> skype me <callto://Rafal_Szarecki/>
>
>
>
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/