Cisco trace IP and Mac address

根据IP查询Mac地址：

6513>show ip arp 192.168.220.20
Protocol  Address          Age (min)  Hardware Addr   Type   Interface
Internet  192.168.220.20          9   001e.79c5.d0c1  ARPA   Vlan2

根据MAC查询端口号：

6513>show mac-address-table address 001e.79c5.d0c1
Legend: * - primary entry
        age - seconds since last seen
        n/a - not available
  
  vlan   mac address     type    learn     age              ports
------+----------------+--------+-----+----------+--------------------------
Active Supervisor:
*    2  001e.79c5.d0c1   dynamic  Yes         15   Gi7/1
Standby Supervisor:
*    2  001e.79c5.d0c1   dynamic  Yes         20   Gi7/1

当网络中存在交换机级联时，查出来的是交换机级联端口，通过CDP协议，查找交换机级联信息，然后重新登录到主机连接的交换机，查询端口。

6513>show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
  
Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
RD_LAB           Gig 7/2           179           S I      WS-C2960G Gig 0/48
TS_LAB           Gig 8/1           178           S I      WS-C2960G Gig 0/48
6513-3           Ten 9/3           143          R S I     WS-C6513  Ten 7/1
6513-2           Ten 9/2           130          R S I     WS-C6513  Ten 7/1
6504             Ten 9/1           162          R S I     WS-C6504- Ten 1/1

关闭指定端口：

> en
# conf t
6513(config)# int Gi7/1
6513(config-if)# shutdown