Talk:Enhanced Interior Gateway Routing Protocol/Archive 1
The description of how this protocol actually works is woefully wrong, and seems to consist mostly of the Cisco marketing blather about how good it is. It is not in any way a link-state protocol, and does not have a complete topology map (even though the documentation speaks of "Topology Table" - which is basically just a copy of each neighbour's routing table). I did find one Cisco document that's reasonably technically accurate, and will reference it in the article. Are there actually any public-domain specifications of the protocol that we can reference? I found one thing that's pretty reasonable, will add that too. Noel (talk) 17:55, 15 Nov 2004 (UTC)
Formula problem
Following comment removed from text:
- hm, is it
- (K1*Bandwidth) + ((K2*Bandwidth)/(256-Load)) + ((K3*Delay) + (K5/(Reliability + K4)))
- otherwise the below does not work:
Well, here's the exact formula from the source I used:
- ((K1*Bw) + (K2*Bw)/(256-Load) + (K3*Delay)*(K5/(Reliability + K4)))
Alas, their version is even more poorly paren'd than the one I gave! But you're right, it doesn't give the results they say it does. Looking at another Cisco document gives this equation:
- Metric = [K1 * Bandwidth + (K2 * Bandwidth)/(256-load) + K3*Delay] * [K5/(reliability + K4)]
which looks equally problematoc. It goes on to say, however:
- The default constant values are K1 = K3 = 1 and K2 = K4 = K5 = 0.
- If K5 = 0, the [K5/(reliability + K4)] term is not used.