Could you post a show ip route 10.72.0.0 255.255.0.0 longer and a show ip route 10.71.0.0 255.255.0.0 longer, if it's not too much information. It seems like it should be summarizing, since you have at least one interface in the range.
Are you using an admin distance on the end of the summary for a reason? I know that 5 is low, but it could be that you have a lower admin distance static or connected in this range knocking the summary out (though this normally wouldn't cause the summary not to be built, but rather just prevent it from being installed in the routing table). Could you try it without the admin distance?
Have you tried it without the static routes? I'm not certain why you'd run both--either redistribute the statics, or configure the summaries. With the lower admin distance static route there, the EIGRP summary route isn't going to make it into the routing table, so it shouldn't be advertised to a peer anyway. The summary will block the generation of longer prefixes out that interface, but you could do that with a distribute list instead (?).
What version of code are you running? CSCdp93649 should be integrated into 12.1 and forward, from about 12.1(04) or so, looking at the record.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...