FYI - this is the info I have received: This issue is due to a bug - CSCsy98281. There is no information available externally about this bug as it is not yet fixed. Bug Description - Symptom: Connected network not present in EIGRP topology table. Conditions: If a network is advertised in EIGRP first and then the corresponding IP address is configured on the interface, this network is not introduced into the EIGRP topology table. Due to this the network is not advertised to the rest of the routing domain. Workaround: Shutdown and unshut the interface. As a matter of fact, a particular sequence of configuration causes the issue. SEQUENCE 1 - With the below sequence, issue is not observed. (1) VLAN subnet is advertized using the EIGRP network command. (2) Interface VLAN is created (3) IP address is configured on it (4) Interface is no shut. SEQUENCE 2 - With the below sequence, issue is observed. (1) VLAN subnet is advertized using the EIGRP network command. (2) Interface VLAN is created (3) Interface is no shut. (4) IP address is configured on it This bug is a corner case issue. Since the issue was resolved upon a reload of the switch, this indicates that the configuration is read by IOS in the sequence which causes the issue not to occur. I believe that the issue will not be observed in the future. The workaround is to shut/no shut the interface - which would mirror SEQUENCE 1.
From: [email protected] To: [email protected] Subject: Real life - Possible eigrp bug ? Date: Tue, 24 Jul 2012 22:03:55 +0000 Hi all, real life scenario here, hope you can help. Running eigrp and I should be advertising some networks out but I don't, well the device dosen't. Below is the relevant config. The problem is on vlan 692. I am not redistributing connected. You can see that for vlan 691 it's all good, but for 692, I get 0 successors, FD is Inaccessible. Any ideas? Many thanks. Building configuration... Current configuration : 252 bytes ! interface Vlan692 ip address 172.31.90.30 255.255.255.224 standby 1 ip 172.31.90.1 standby 1 priority 255 standby 1 preempt end MLSWITCH#sh ip route 172.31.90.0 Routing entry for 172.31.90.0/27 Known via "connected", distance 0, metric 0 (connected, via interface) Redistributing via eigrp 1 Routing Descriptor Blocks: MLSWITCU#sh ip eigrp topology all-links | beg 172.31.90.0 P 172.31.90.0/27, 0 successors, FD is Inaccessible, serno 0 via 192.168.219.105 (3072/2816), GigabitEthernet5/1 via 172.31.157.130 (3072/2816), Vlan690 Building configuration... Current configuration : 202 bytes ! interface Vlan691 ip address 172.31.91.254 255.255.255.0 no ip redirects no ip proxy-arp standby 51 ip 172.31.91.1 standby 51 priority 254 standby 51 preempt end MLSWITCH#sh ip route 172.31.91.0 Routing entry for 172.31.91.0/24 Known via "connected", distance 0, metric 0 (connected, via interface) Redistributing via eigrp 1 Routing Descriptor Blocks: * directly connected, via Vlan691 Route metric is 0, traffic share count is 1 MLSWITCH#sh ip eigrp topology all-links | beg 172.31.91.0 P 172.31.91.0/24, 1 successors, FD is 2816, serno 210256 via Connected, Vlan691 via 172.31.157.130 (3072/2816), Vlan690 router eigrp 1 network 172.31.89.0 0.0.0.255 network 172.31.90.0 0.0.0.31 network 172.31.90.64 0.0.0.63 network 172.31.91.0 0.0.0.255 network 172.31.157.128 0.0.0.7 network 192.168.219.104 0.0.0.3 network 192.168.219.108 0.0.0.3 network 192.168.238.104 0.0.0.0 passive-interface default no passive-interface GigabitEthernet5/1 no passive-interface TenGigabitEthernet5/4 no passive-interface GigabitEthernet5/2 no passive-interface Vlan690 System image file is "sup-bootdisk:s72033-adventerprisek9_wan-mz.122-33.SXI4.bin" cisco WS-C6506-E (R7000) processor (revision 1.2) with 983008K/65536K bytes of memory. Fulvio _______________________________________________ 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 http://onlinestudylist.com/mailman/listinfo/ccie_rs
