System information

Troubleshooting DECnet 11-265
DECnet: Routers Not Establishing Adjacencies
Adjacency between
routers is not
bidirectional
Step 1 Use the show decnet route exec command to see if the adjacency with the
expected designated router is in a “down” or “initializing” state.
Step 2 If you are troubleshooting a nonbroadcast multiaccess network (such as Frame
Relay or X.25), make sure that map statements are properly configured.
To establish an address translation for selected nodes, use the decnet map global
configuration command:
Syntax:
decnet first-network map virtual-address second-network real-address
• first-network—DECnet network numbers in the range 0 to 3.
• virtual-address—Numeric DECnet address (10.5, for example).
• second-network—DECnet network number you map to; DECnet numbers range
0 to 3.
Syntax Description:
• real-address—Numeric DECnet address (10.5, for example).
Step 3 Use the debug decnet adj privileged exec command to determine whether hello
packets are being exchanged.
Step 4 If a router is not sending hello packets, use the show interfaces command to
determine whether the interface input and output queues are full. A full input queue
is indicated by a value of 75/75, and a full output queue is indicated by a value of
40/40.
Step 5 If the queues are full, and no hello packets are being exchanged, contact your router
technical support representative.
Possible Problem Solution