OPERATIONAL DEFECT DATABASE
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Device can crash when configuring "backup interface" command in a secondary interface. When an interface is currently a backup interface it is shown as "standby mode" Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)# Router(config)# interface gigabitEthernet 0/0/0 Router(config-if)# backup interface gigabitEthernet 0/0/1 Router(config-if)# end Router# %LINK-5-CHANGED: Interface GigabitEthernet0/0/1, changed state to standby mode Router# show ip interface brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0/0 unassigned YES NVRAM up up GigabitEthernet0/0/1 unassigned YES NVRAM standby mode down Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)# Router(config)# interface gigabitEthernet 0/0/1 Router(config-if)# backup interface gigabitEthernet 0/0/0 Exception to IOS Thread: Frame pointer 0x7FED69341520, PC = 0x5619A9A800C8 UNIX-EXT-SIGNAL: Segmentation fault(11), Process = Exec -Traceback= 1#fcf85334fc0e7c3526ad58c6214035ba :5619A46BE000+53C20C8 :5619A46BE000+5A2D881 :5619A46BE000+5A2B0FE :5619A46BE000+A7FD4EE :5619A46BE000+5A4A0C7
Configure "backup interface" command in a secondary interface.
No workaround.
"backup interface" command should only be configured in the primary interface. Configuring "backup interface" command in a secondary interface is a misconfiguration.
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