[c-nsp] Load Balancing With BGP

[Rubens Kuhl Jr.]

FYI, the design I have thinked of to a hosting network was a scenario
where there is one router connected to each upstream, and the internal
core routers select which router to send traffic to.

On such a scenario, you could point two small IOS routers to send IP
SLA probes to each one of the upstreams, and peer them with IBGP
(multi-hop via external routers, probably) with the internal core
routers so the OER BGP decisions reflect on the global structure.


Rubens



On 9/20/06, Rubens Kuhl Jr. <rubensk at gmail.com> wrote:
> And it is not. OER supports 1700, 1800, 2600, 2800, 3640, 3660, 3700,
> 3800, 7200, 7300, 7500 with 12.3T or 12.4 and (will) support 7600 /
> Cat 6k with 12.2S.
>
> But... I haven't seen much difference in a what an OER border router
> does (Netflow + SAA) and what a 12000 can do, so I think there can be
> some tricks to make such a scenario work, with support of 1 or 3 IOS
> routers from the list above, where you pull the routes from the fake
> OER border routers and inject them on the real exit routers.
>
> Not tested and, if it works, not Cisco supported.
>
>
> Rubens
>
>
>
>
>
> On 9/20/06, Chris Strandt <strandtc at littleblueroom.com> wrote:
> > I thought I read awhile ago that OER isn't supported on the 12000 series
> > routers.... maybe the situation has changed.. will have to do some reading.
> >
> > -Chris
> >
> > Rubens Kuhl Jr. wrote:
> >
> > > IOS has a new feature called OER - Optimized Edge Routing, which does
> > > pretty much that.
> > > http://www.cisco.com/en/US/products/ps6628/products_ios_protocol_option_home.html
> > >
> > >
> > > If your IOS router runs IP base you will need to upgrade to IP
> > > Services or better.
> > >
> > >
> > > Rubens
> > >
> > >
> > > On 9/19/06, Chris Strandt <strandtc at littleblueroom.com> wrote:
> > >
> > >> I have a semi automated way of load balancing our traffic across
> > >> multiple providers, but I'm curious what else is available.  Its pretty
> > >> painful to  re-balance at this point
> > >>
> > >> I know Internap has an appliance that looks at network traffic, and
> > >> statistics, but its a pretty high dollar item.  I currently have 3
> > >> Transit connections, using BGP, and will have 5 by the end of the year.
> > >>
> > >>
> > >> Is there an open source project out there?  Maybe something utilizing
> > >> Zebra, Flow Tools, and SNMP to intelligently load balance traffic?  I
> > >> basically do this now... but its only 50% automated.. and using a long
> > >> route map.
> > >
> >
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