BI-DIR PIM Designated Forwarder (DF) equal-metric tie-breaker on Cisco IOS

November 9th, 2007

After reading the RFC for BI-DIR PIM (RFC 5015), I didn’t find a section describing what would happen if two routers had equal metrics, in regards to the DF election. Obviously the AD and routing metric are used, but what if they’re equal — the same? Then what? Well, since I couldn’t find it in the RFC, I decided to see how Cisco handled this in their implementation. Below is what I found… Read the rest of this entry »

Implementing Source-Specific Multicast (SSM) on Cisco IOS…

November 8th, 2007

I read over RFC 3569 (overview of SSM) and decided to try my hand at SSM in my lab environment. Read the rest of this entry »