-----Original Message----- From: Shivlu Jain [mailto:shivlu.jain@gmail.com] Sent: Thursday, February 26, 2009 4:05 AM To: nanog@nanog.org Subject: Problem With E1
Since morning I am facing a issue in which one of E1 is configured under OSPF. OSPF neighborship is up but not able to send and receive the data. The configuration is plain vanila. Why it is happening so; I donot know?
-- Thanks & Regards shivlu jain http://shivlu.blogspot.com/ 09312010137
If this is an operational circuit, this is a good example of why it can extremely useful to document the working configuration of a resource, so you can compare the malfunctioning configuration. The document may well be stored as a file, and the comparison could be made with diff or a similar utility. Don't forget SNMP and NetFlow, both on the router, but also SNMP on the access device, modem, multiplexer, etc. When that circuit first came up, I probably would have captured the information from the router's equivalent of the Cisco commands: * show interface * show ip interface * show ip ospf interface * show ip ospf neigbors Possibly show ip ospf database and show ip ospf database neighbors; perhaps save the routing table when storing those displays. Even more displays could be useful, such as subinterfaces. Electrical tests, such as verifying the signal clocking and amplitude, are usually last resorts -- although do verify that no one has moved the cabling among router/CSU ports, and that everything has power.