<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:10pt">Dear Aniruddha Da,<br><br>Is it possible to do iBGP full mesh? If so, PBR can be avoided and changing local-preference of default-routes (received from BRs) at DRs, upload can be manged without impacting CPU.<br><br>Please correct me if I missed to understand the problem statement correctly.<br><br>~ nibir<br><div><span><br></span></div><div style="display: block;" class="yahoo_quoted"> <br> <br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 10pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> On Thursday, November 21, 2013 6:48 PM, Aniruddha Barua <aniruddha.barua@colbd.com> wrote:<br> </font> </div> <div
class="y_msg_container">Hello everyone,<br><br>Please view this email in plain text with mono-spaced fonts because it has a text based diagram.<br>Please take a look at it. Generally, Policy Routing is done in Distribution Routers (DR) to send<br>Internet bound traffic from a specific prefix to appropriate Border Router (BR) so that upward and<br>downward traffic uses the same upstream SP. When prefixes are moved from one BR to another BR due to<br>business requirements, Network Admin needs to manually update Next Hop information in Policy Routing<br>configurations in all DRs. If the number of prefixes and/or the number of DRs increases, this<br>becomes cumbersome. Is there any way (vendor specific and/or vendor independent) to automate these<br>updates?<br><br><br>192.168.0.0/26--------\ <OSPF><br>192.198.1.64/26-------(DR1)------|<br>192.200.2.128/25------/ |<br>
| ---(BR1)-> <eBGP Adv. 192.168.0.0/24 to upstream A><br>192.168.0.64/26-------\ | /<br>192.198.1.0/26--------(DR2)-----[SW]----(BR2)-> <eBGP Adv. 192.200.2.0/24 to upstream B><br>192.200.2.64/26-------/ | \<br> | ---(BR3)-> <eBGP Adv. 192.198.1.0/24 to upstream C><br>192.168.0.128/25------\ |<br>192.198.1.128/25------(DR3)------|<br>192.200.2.0/26--------/<br><br><br>(DR)=Distribution Router, (BR)=Border Router, [SW]=Switch.<br><br><br>With thanks and best regards,<br><br>ANIRUDDHA BARUA<br>Email: <a ymailto="mailto:aniruddha.barua@colbd.com"
href="mailto:aniruddha.barua@colbd.com">aniruddha.barua@colbd.com</a>, <a ymailto="mailto:cto@colbd.com" href="mailto:cto@colbd.com">cto@colbd.com</a><br><br>_______________________________________________<br>nog mailing list<br><a ymailto="mailto:nog@bdnog.org" href="mailto:nog@bdnog.org">nog@bdnog.org</a><br><a href="http://mailman.bdnog.org/mailman/listinfo/nog" target="_blank">http://mailman.bdnog.org/mailman/listinfo/nog</a><br><br><br></div> </div> </div> </div> </div></body></html>