Diagnosing IP Networks › Display a Routing Table

Display a Routing Table

A routing table holds a list of paths through which hosts can communicate with each other.

You may find that the number of entries in your Routing Table is such that it becomes unmanageable. If this is the case, you can reduce the list by entering a network address or network address mask and using the Refresh command (F6) to rebuild the list.

To view the routing table for a device

1. Enter /IPDIAG.

   The Network Diagnosis Functions menu appears.

2. Type RT at the prompt, complete the Name/Addr field and any required optional fields, and press Enter.

   The Routing Table List panel appears.

Note: The routing table facility uses SNMP MIB-II technology, which is not supported by all hosts.

Actions on the Routing Table

The following actions can be applied to routers appearing in the First Hop column of the routing table:

I (Interfaces)

Presents the Interface List panel for the router listed in the First Hop column. To apply the Interfaces action, enter I to the left of the appropriate routing table entry on the list.

M (MIBinsight)

Presents the MIBinsight browser for the router listed in the First Hop column. To apply the MIBinsight action, enter M to the left of the appropriate routing table entry on the list.

NL (NameLookup)

Returns the full name of the router listed in the First Hop column.

P (Ping)

Executes the PING command that tests whether the first hop address is reachable. To apply the Ping action, enter P to the left of the appropriate routing table entry on the list.

R (Routing Table)

Presents the routing table for the router listed in the First Hop column. You can use the Net Address Mask field to limit the presented list.

S (System Information)

Presents the TCP/IP : System Information panel for a selected first hop address. To apply the System Information action, enter S to the left of the appropriate routing table entry on the list.

TN (Telnet)

Initiates a Telnet connection to the router listed in the First Hop column. You can use this connection to enter commands on that router to determine and alter its state.