在CCIE的lab考試中，可以通過壹些debug和show的命令讓妳很快地通過CCIE的lab考試，下面是CCIE lab 考試中常用的show命令。
Catalyst交換機
show vlan brief
show interface trunk
show interface switchport
show vtp status
show spanning-tree vlan
Frame幀中繼網絡
show frame map
show frame pvc
OSPF路由協議
show ip route ospf
show ip ospf neighbor
show ip ospf
show ip ospf interface
EIGRP路由協議
show ip eigrp neighbor
show ip eigrp topology
show ip route eigrp
show ip protocol
RIP version 2
show ip route rip
clear ip route *
debug ip rip
BGP
show ip bgp summary
show ip bgp
show ip bgp neighbor x.x.x.x advertised-routes
show ip bgp regex
show ip bgp rib-failure
show ip route bgp
IP Multicast
show ip pim neighbor
debug ip mpacket
debug ip pim
show ip pim neighbor
show ip pim interface
show ip pim rp map
show ip mroute count
show ip mroute
show ip route
好好利用這些debug和show的命令，對在CCIE lab考試時候的排錯有很大的幫助。