Why does the VDX send SNMP interface status related traps for events that don't show up in "show logging raslog" for interfaces that don't show up in "show interface"?
While SNMP interface status traps may not contain explicit interface names, they do contain ifIndex numbers that can be used with "snmpwalk" of ifDescr to determine interface name. When the VDX sends an SNMP interface status without recording anything in "show logging raslog", the interface name that can be determined from the ifIndex with "snmpwalk" is not one that shows up in "show interface".
For example, say a VDX sends a trap with the following information even though nothing is recorded in "show logging raslog".
"snmpwalk" will show that the ifIndex corresponds with an interface named tunl0.
$ snmpwalk -v 2c -c public 10.170.104.26 ifDEscr | grep -A 6 805306369
IF-MIB::ifDescr.805306369 = STRING: lo
IF-MIB::ifDescr.805306370 = STRING: eth0
IF-MIB::ifDescr.805306371 = STRING: eth1
IF-MIB::ifDescr.805306372 = STRING: tunl0
IF-MIB::ifDescr.805306373 = STRING: gre0
IF-MIB::ifDescr.805306374 = STRING: sit0
IF-MIB::ifDescr.805306375 = STRING: port0
The interface tunl0 shows up in "snmpwalk", but it is not one that shows up in "show interface".