IPv4
路由排错
ping
tracert
traceroute
telnet
show mac address-table
show interfaces fastEthernet 0/1
show ip route
show ip access-lists
show ip interface gigabitEthernet 0/1 | include access list
PC排错
ping
arp -a
route print
IPv6
show ipv6 neighbors
show ipv6 route
show ipv6 access-lists
show ipv6 interface gigabitEthernet 0/1 | include access list
原文：http://www.cnblogs.com/airoot/p/4285488.html