<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><font face="Calibri"><span style="font-size: 15px;">And as a follow on....</span></font><div><font face="Calibri"><span style="font-size: 15px;"><br></span></font></div><div><font face="Calibri"><span style="font-size: 15px;">if they're not infrastructure links (i.e. router to router, TE database requirements, non-MPLS capable links, no other routers sitting behind them, etc.. etc..); might want to think about putting those routes into BGP instead. Non-infrastructure links I always consider to be "customer subnets" anyways. Keeps you from polluting your OSPF (IGP) network with routes </span></font></div><div><font face="Calibri"><span style="font-size: 15px;"><br></span></font></div><div><font face="Calibri"><span style="font-size: 15px;">i.e. insert mantra of "Your IGP should only contain Links, and Loopbacks". ( BGP scales way better for customer/non-critical/non-infrastructure routes )</span></font></div><div><font face="Calibri"><span style="font-size: 15px;"><br></span></font></div><div><font face="Calibri"><span style="font-size: 15px;">- CK.</span></font></div><div><font face="Calibri"><span style="font-size: 15px;"><br></span></font></div><div><br></div><div><br><div><div>On 19 May 2017, at 1:48 pm, Alex Samad <<a href="mailto:alex@samad.com.au">alex@samad.com.au</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr">Hi<div><br></div><div><br></div><div>If I have a router with 4 interface</div><div><br></div><div>int1 connect to the OSPF network / backbone </div><div>and int 2,3,4 are vlans with no other routers attached </div><div><br></div><div>say </div><div>int1 has network <a href="http://10.10.1.0/24">10.10.1.0/24</a></div><div>int2 has network <a href="http://10.10.2.0/24">10.10.2.0/24</a></div><div>int3 has network <a href="http://10.10.3.0/24">10.10.3.0/24</a></div><div>int4 has network <a href="http://10.10.4.0/24">10.10.4.0/24</a></div><div><br></div><div><br></div><div>If I want the network</div><div><a href="http://10.10.2.0/24">10.10.2.0/24</a></div><div><a href="http://10.10.3.0/24">10.10.3.0/24</a></div><div><a href="http://10.10.4.0/24">10.10.4.0/24</a></div><div><br></div><div>distributed by OSPF, I can add in the interfaces int2-4 and then make them passive as there is no OSPF there.</div><div><br></div><div>Just realised I can also redistribute the prefixes as NSSA-ext1 or 2.</div><div><br></div><div><br></div><div>Whats the difference , which is considered to be best practices, I have also setup interfaces with passive OSPF.</div><div><br></div><div><br></div><div>Alex</div></div>
_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net">AusNOG@lists.ausnog.net</a><br>http://lists.ausnog.net/mailman/listinfo/ausnog<br></blockquote></div><br></div></body></html>