SB17 to SRD4 modifies no snmp trap link-status on ATM subinterfaces

Unanswered Question
Aug 30th, 2010

Ok, so I thought this was interesting.  I upgraded a 7206VXR with NPE-G1 from 122-31.SB17 to 122-33.SRD4.  Note the differences in the atm subinterface configs.  It seems to have enabled snmp link status traps on the atm subinterfaces that it was explicitly turned off on prior to upgrade.  The funny thing is that the no snmp trap link-status command is retained on ethernet, virtual-template, and multilink interfaces.  Strange behavior I thought. 

Before upgrade on SB17

interface ATM2/0.32039 point-to-point

bandwidth 1536

ip address x.x.x.x 255.255.255.252

no ip redirects

no ip unreachables

no ip proxy-arp

no atm enable-ilmi-trap

no snmp trap link-status

pvc 32/39

  vbr-nrt 1806 1806

  no ilmi manage

  oam-pvc manage 0

  encapsulation aal5snap

  service-policy out qos

After upgrade on SRD4

interface ATM2/0.32039 point-to-point

bandwidth 1536

ip address x.x.x.x 255.255.255.252

no ip redirects

no ip unreachables

no ip proxy-arp

no atm enable-ilmi-trap

snmp trap link-status

pvc 32/39

  vbr-nrt 1806 1806

  no ilmi manage

  oam-pvc manage 0

  encapsulation aal5snap

  service-policy out qos

I have this problem too.
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