Troubleshooting guide

6-46
ATM and Layer 3 Switch Router Troubleshooting Guide
OL-1969-01
Chapter 6 Troubleshooting Switch Router ATM Network Connections
Troubleshooting PNNI SVCC-RCC and Higher-level Links
Step 2 Use the show atm pnni svcc-rcc local-node node-index command to check the following:
If the SVCC-RCC state is up, but the hello state is other than 2way_in, the following subset of RCC
Hello States might indicate possible user correctable conditions if they remain unchanged for an
extended period:
• DOWN—The SVCC-RCC has not indicated that it is up. See the previous sections for debugging
SVCC-RCC setup problems.
• AT TEMP T—No hello messages have been (recently) received from the LGN peer, even though the
SVCC-RCC is up. Check for correct status at the remote LGN. For further analysis, see the
“Debugging SVCC-RCC and Higher-level Link Problems” section on page 6-46.
• 1-WAY INSIDE—Hello messages have been recently received from an LGN peer, but the LGN has
not yet acknowledged the information sent from this end. Confirm that the remote node listed is
correct. See the following section, “Debugging SVCC-RCC and Higher-level Link Problems.”
Debugging SVCC-RCC and Higher-level Link Problems
If the previous steps cannot isolate the cause of a problem with higher-level link status, this section
describes the debug command and show command that recognize the following:
• SVCC-RCC setup state transitions
• RCC hello state transitions
• Aggregated horizontal link state transitions
• Full hello message contents
Use the following commands to debug and check the SVCC-RCC setup:
Follow these steps to debug and check the SVCC-RCC setup:
Step 1 Use the debug atm pnni svcc-rcc remote-node internal-node-number command on the switch router
that has the higher numbered LGN node ID, because that is the SVC originator (for example, the calling
side).
Caution Because this debugging mode controls extensive information, it is best to filter the output by
specifying either a local node or preferably the target remote node number, if it is known.
Command Purpose
debug atm pnni svcc-rcc remote-node
internal-node-number
Confirms the SVCC-RCC setup, the RCC
hello, and aggregated horizontal link state
transitions, plus full hello message
contents.
no debug all Turns off all further debugging.
show atm pnni topology Confirms if PNNI shows a route to the
remote LGN.