BGP load sharing with 2 default gateways

I am trying to figure out the best way to accomplish this, any
suggestions would be appreciated



Hub1
inter----Gateway1-----eBGP--MPLS Cloud--eBGP---Spoke 1
net | |
net | iBGP MPLS
net | |
cloud--Gateway 2-----eBGP--MPLS Cloud--eBGP---Spoke 2
Hub2



In this configuration, All of the spokes (remote sites) are connected
into the mpls cloud via BGP. They are advertising their local routes
and therefore can reach other. In order for the spokes to reach
networks which are NOT in their routing table,( such as any public
internet address), they will have to send traffic to one of the
gateways.

What I would like to do is be able to load share between the two
gateways (Hubs).

For outbound traffic (toward the spokes) I know that I can use local
preference to choose an AS exit path for specific spoke prefixes (this
will allow me to load share traffic toward the spokes)

For inbound traffic I am a little confused on how to do it. I would
like to advertise a default route to the spokes, but I want, for
example, Spoke 1 to always use Gateway 1 and Spoke 2 to use Gateway 2.
In the event of a failure on Gateway 1, all spokes should route to
Gateway 2 and vice versa.

1. Is it possible to advertise a default gateway from each Hub? or will
the spokes only accept one of the default gateways?
2. Is there a way to force specific spokes to uses specific default
gateways?
3. Is there an even simpler way to achieve all of this?

My goal is to be able to load share the traffic from the spokes
destined for the internet.

In my actual setup, there is actually 4 gateways and over 100 spokes.

Thanks.

.

Relevant Pages

  • BGP load sharing with 2 default gateways
    ... All of the spokes are connected ... What I would like to do is be able to load share between the two ... In the event of a failure on Gateway 1, all spokes should route to ... the spokes only accept one of the default gateways? ...
    (comp.dcom.sys.cisco)
  • BGP Load Sharing
    ... All of the spokes are connected ... What I would like to do is be able to load share between the two ... In the event of a failure on Gateway 1, all spokes should route to ... the spokes only accept one of the default gateways? ...
    (comp.dcom.sys.cisco)
  • Re: BGP load sharing with 2 default gateways
    ... define a hierarchy of gateways). ... Is there a way to force specific spokes to uses specific default ... But unless your MPLS cloud is implemented ... router to MPLS cloud to distribution router to LAN to gateway ...
    (comp.dcom.sys.cisco)
  • Re: Another shimmy question
    ... >> calculate loading and compare that to the yield stress. ... >> yield stress is not moved by changing load. ... >> the rim. ... If you have the spokes at a low tension, ...
    (rec.bicycles.tech)
  • Re: spoke tension question # 165,345,06.....
    ... and that makes the spokes able to sustain compressive load ... whatever is "borrowed" for the spokes is no longer available as capacity ... in the rim, hence the rim is closer to yield. ... Will a higher tensioned wheel distribute that load ...
    (rec.bicycles.tech)