Troubleshooting guide

42 Advanced System Diagnostics and Troubleshooting Guide

Software Exception Handling

back into the network during a scheduled outage window. This might be an advantage if all connected

nodes are dual-homed, as a reinsertion will trigger a network reconvergence and an additional service

outage.

NOTE

Under the

reboot

shutdown

options, network redundancy protocols will work to recover the network.

The only difference between these two options, in this case, is that under the

reboot

option the

reinsertion of the system triggers a second network convergence. The impact of the reconvergence

depends on the network topology and configuration (for example, OSPF ECMP versus a large STP

network on a single domain).

Also, if the

system-recovery-level

condition is set to

none

, the network might become subject to

unpredictable system behavior and—possibly—extensive system outages. Depending on the task that

experiences the exception error, the result might be corrupt routing tables and routing/broadcast loops.