Ping comonent parts of a multi link PPP bundle

It is helpful to put IP addresses on the component T1s of a MLPPP bundle for testing individual links. BUT if you just put the IP address on the link, it does not show up in the routing table. in order to make it work you have to add a static route pointing to the interface itself https://supportforums.cisco.com/thread/2068848 This appears to be normal behavior but to allow for the serial interfaces to show in the routing table you will have to add a static route on the router pointing to the interface, eg: ip route 172.27.3.0 255.255.255.252 Serial0/0/0:0