Useful debug commands by topic/technology. A work in progress as I go through my own CCIE studies.
General | Layer 2 | Frame Relay | RIP | OSPF | EIGRP | BGP | MPLS | IPv6 | Multicast | QoS
- debug tunnel
- debug ip routing
- debug ip packet
- debug spanning-tree events
- debug dtp packet
- debug dot1x
- debug frame-relay lmi
- debug frame-relay events
- debug frame-relay packet
- debug frame-relay switching
- debug frame-relay multilink
RIP
- debug ip rip
- debug rip events
- debug rip database
- debug ip ospf lsa-generation
- debug ospf adj
- debug ospf events
- debug ospf flood
- debug ospf packet
- debug ospf tree
EIGRP
BGP
MPLS
- debug mpls packet
- debug mpls drop
IPv6
- debug ip mpacket
- debug ip pim
QoS