[bdNOG] Automatic update of Next Hops in Routing Policies for Internet bound traffic in interior routers.

• Previous message: [bdNOG] Automatic update of Next Hops in Routing Policies for Internet bound traffic in interior routers.
• Next message: [bdNOG] Automatic update of Next Hops in Routing Policies for Internet bound traffic in interior routers.
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Dear Aniruddha Da,

For this sorts of solution, to my opinion PBR is the only option. But in
transit we usually have full BGP route (IPv4/IPv6) and use the BGP best
route. Some time we do traffic engineering based on destination prefix/asn.

Thanks

Fakrul Alam
bdHUB Limited

On 11/21/13, 6:47 PM, Aniruddha Barua wrote:
> Hello everyone,
> 
> Please view this email in plain text with mono-spaced fonts because it has a text based diagram.
> Please take a look at it. Generally, Policy Routing is done in Distribution Routers (DR) to send
> Internet bound traffic from a specific prefix to appropriate Border Router (BR) so that upward and
> downward traffic uses the same upstream SP. When prefixes are moved from one BR to another BR due to
> business requirements, Network Admin needs to manually update Next Hop information in Policy Routing
> configurations in all DRs. If the number of prefixes and/or the number of DRs increases, this
> becomes cumbersome. Is there any way (vendor specific and/or vendor independent) to automate these
> updates?
> 
> 
> 192.168.0.0/26--------\       <OSPF>
> 192.198.1.64/26-------(DR1)------|
> 192.200.2.128/25------/          |
>                                   |   ---(BR1)->  <eBGP Adv. 192.168.0.0/24 to upstream A>
> 192.168.0.64/26-------\          |  /
> 192.198.1.0/26--------(DR2)-----[SW]----(BR2)->  <eBGP Adv. 192.200.2.0/24 to upstream B>
> 192.200.2.64/26-------/          |  \
>                                   |   ---(BR3)->  <eBGP Adv. 192.198.1.0/24 to upstream C>
> 192.168.0.128/25------\          |
> 192.198.1.128/25------(DR3)------|
> 192.200.2.0/26--------/
> 
> 
> (DR)=Distribution Router, (BR)=Border Router, [SW]=Switch.
> 
> 
> With thanks and best regards,
> 
> ANIRUDDHA BARUA
> Email: aniruddha.barua at colbd.com, cto at colbd.com
> 
> _______________________________________________
> nog mailing list
> nog at bdnog.org
> http://mailman.bdnog.org/mailman/listinfo/nog
> 

• Previous message: [bdNOG] Automatic update of Next Hops in Routing Policies for Internet bound traffic in interior routers.
• Next message: [bdNOG] Automatic update of Next Hops in Routing Policies for Internet bound traffic in interior routers.
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]