We continue working to deploy new Wireless Data plans. This week we’ve stumbled on an issue in the edge router. It does not appear to be properly detecting the OSPF routes. This problem manifests itself when the 4th octet of the IP address assigned by the PDSN to a handset exceeds “128”. Whenever a higher number gets assigned all data calls fail. Doing a stare and compare with other IP address ranges in the router shows the difference. But so far the cause cannot be explained.
Nortel has proposed flushing the OSPF cache on the PDSN with this command:
clear ip ospf process
After the command has been entered, we’ll monitor use of the use of the erring address space to see if data sessions having an IP Address above .128 succeed.