I have a new router which I just configured and installed on SITE B which is connected to an X.21 DTU. The link to site A is up and I'm able to ping to Site A and all the way to Headoffice. I have a EIGRP 5 configured on both site A and site B routers. when I execute a command show ip route 22.214.171.124 on router at site B it's telling the subnet is not in the subnet table. When I do a ip eigrp 5 topology, I can only see site A and not the headoffice routes. I've now since added static routing on site B router. But it's still not helping. What am I missing, pls help
You aren't able to reach 10.254.4.0/24 from the SiteB router ?
SiteB router has it in the routing table therefore is not a routing problem.
I guess you have to trust the head office's network person on having 126.96.36.199/24 in their routing table.
Do they also have a route for 188.8.131.52/30 ? This is the serial IP subnet between SiteA and SiteB. This must also be in the head office routing table so you can telnet from SiteB's router. However, you should be able to telnet from SiteB's router if you source your telnet from SiteB's LAN interface
telnet [head office] /source FastEthernet0/0
SiteB LAN should be able to ping all the way to head office. Have you tried pinging from the servers ?
If this doesn't work, then you need to verify if the head office has any ACLs.