I setup both a physical lab and a virtual one using GNS3. I created a simple topology; 3 routers(rt1, rt2, and rt3). RT2 is the hub which has 2 WICs and each WIC is linked to the the other routers(rt1 and rt3). See attached diag.
I configured OSPF on all routers but when I issue the following command #show ip ospf neighbor at any one of the routers the output comes empty. Also, when I try to ping the rt1 interface from rt2, it fails and vice verse.
Any ideas to fix these issues?
Here is the ip address configured at each serial intf:
rt1: s0/0/0: 172.16.1.253/30
rt2: s0/0/0: 172.16.1.254/30
rt2: s0/1/0: 172.16.2.254/30
rt3: s0/0/0: 172.16.2.253/30
Here is the part of the config off of rt2:
interface Loopback2 ip address 188.8.131.52 255.255.255.0 ! interface FastEthernet0/0 description Link to LAN ip address 192.168.2.253 255.255.255.0 duplex auto speed auto
! interface Serial0/0/0 description link to SK-RTR-01 S0/0 bandwidth 1536 ip address 172.16.1.254 255.255.255.252 no ip redirects no ip unreachables no ip proxy-arp no ip mroute-cache ! interface Serial0/1/0 description link to SK-RTR-03 S0/0 bandwidth 1536 ip address 172.16.2.254 255.255.255.252 no ip redirects no ip unreachables no ip proxy-arp no ip mroute-cache ! router ospf 10 log-adjacency-changes network 172.16.1.0 0.0.0.3 area 0 network 172.16.2.0 0.0.0.3 area 0
Hi , i can't see router-id for your routers , in ospf protocol , first you need to define a router id . Also your network address is wrong . It suppose to be 172.16.1.252 and 172.16.2.252 with wild mask 0.0.0.3
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...