Aaron, I think the reason you aren't seeing two routes in the routing table is that the route through .6 doesn't meet the feasible successor check. The variance check requires that the secondary route pass the feasible successor check. You can see that the route through .5 has a feasible distance of 1797120 while the advertised distance to .6 is 1820160. In order for it to be considered a successor, it's advertised distance must be lower than the other routers feasible distance. In this case 1820160 is not lower than 1797120.
This is to prevent loops. For all your router knows, that route on .6 might be through the router .5. Hope this helps, Marc -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Aaron Moreck Sent: Monday, May 30, 2011 9:39 PM To: [email protected] Subject: [OSL | CCIE_RS] EIGRP Wierdness I have been having issues lately with EIGRP and i am suspicious that it is IOS bug related. The other issue i had lately is that auto summary was not working as i expected it to. For my sanity can you see if anything jumps out with this config and show commands. Topology is from Vol 2 Lab 10 Task 5.3. Where we are asked to configure so that R7 load-balances between R5 and R6 when accessing networks on the opposite side of R5 and R6 Configuration on R7 router eigrp 5678 variance 2 passive-interface default no passive-interface FastEthernet0/0 no passive-interface Serial0/0 network 192.168.11.5 0.0.0.0 network 192.168.100.7 0.0.0.0 network 200.0.0.7 0.0.0.0 maximum-paths 2 no auto-summary R7#sh ip route D EX 200.0.0.9 [170/1797120] via 192.168.100.5, 00:17:57, FastEthernet0/0 D EX 200.0.0.2 [170/1797120] via 192.168.100.5, 00:17:57, FastEthernet0/0 D EX 200.0.0.4 [170/1797120] via 192.168.100.5, 00:17:57, FastEthernet0/0 D EX 200.0.0.5 [170/1797120] via 192.168.100.5, 00:17:59, FastEthernet0/0 D EX 200.0.0.6 [170/1797120] via 192.168.100.5, 00:17:59, FastEthernet0/0 R7#sh ip eigrp topology 200.0.0.4 255.255.255.255 IP-EIGRP (AS 5678): Topology entry for 200.0.0.4/32 State is Passive, Query origin flag is 1, 1 Successor(s), FD is 1797120 Routing Descriptor Blocks: 192.168.100.5 (FastEthernet0/0), from 192.168.100.5, Send flag is 0x0 Composite metric is (1797120/1794560), Route is External Vector metric: Minimum bandwidth is 1536 Kbit Total delay is 5100 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1500 Hop count is 1 External data: Originating router is 200.0.0.5 AS number of route is 1 External protocol is OSPF, external metric is 66 Administrator tag is 110 (0x0000006E) 192.168.100.6 (FastEthernet0/0), from 192.168.100.6, Send flag is 0x0 Composite metric is (1822720/1820160), Route is External Vector metric: Minimum bandwidth is 1536 Kbit Total delay is 6100 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1500 Hop count is 1 External data: Originating router is 200.0.0.6 AS number of route is 1 External protocol is OSPF, external metric is 66 Administrator tag is 110 (0x0000006E) _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
