How Cisco switches query specific switch ports based on MAC-IP information

User Access Verification

Password:

Idc-3750g-12s-01>ping 192.168.50.47

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 192.168.50.47, timeout is 2 seconds:

!!!!!

Success rate is percent (5/5), round-trip Min/avg/max = 1/1/1 ms

Hc-3750g-12s-01>sh ARP | In 192.168.50.47

Internet 192.168.50.47 2 0030.4825.4441 ARPA Vlan50

Idc-3750g-12s-01>sh mac address-table Dynamic address 0030.4825.4441

Mac Address Table

-------------------------------------------

Vlan Mac Address Type Ports

----    -----------       --------    -----

0030.4825.4441 DYNAMIC GI1/0/6

Total Mac Addresses for this criterion:1

Idc-3750g-12s-01>sh CDP nei GI1/0/6 de

-------------------------

Device id:idc-2960g48-a14-114

Entry address (es):

IP address:172.16.88.114

Platform:cisco ws-c2960g-48tc-l, Capabilities:switch IGMP

INTERFACE:GIGABITETHERNET1/0/6, Port ID (outgoing port): GIGABITETHERNET0/48

holdtime:120 sec

Version:

Cisco IOS Software, C2960 Software (c2960-lanbasek9-m), Version 12.2 (m) SE5, REL

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EASE SOFTWARE (FC1)

Technical Support:http://www.cisco.com/techsupport

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Tue 28-sep-10 13:44 by Prod_rel_team

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Protocol hello:oui=0x00000c, Protocol id=0x0112; Payload len=27, value=0000000

0ffffffff010221ff000000000000b8bebf549d00ff0000

VTP Management Domain: '

Native Vlan:1

Duplex:full

Management address (es):

IP address:172.16.88.114

Idc-3750g-12s-01>telnet 172.16.88.114

Trying 172.16.8.114 ... Open

User Access Verification

Password:

Idc-2960g48-a14-114>sh mac address-table Dynamic address 0030.4825.4441

Mac Address Table

-------------------------------------------

Vlan Mac Address Type Ports

----    -----------       --------    -----

0030.4825.4441 DYNAMIC GI0/20

Total Mac Addresses for this criterion:1

Idc-2960g48-a14-114>sh Mac Address-table Interface gi0/20

Mac Address Table

-------------------------------------------

Vlan Mac Address Type Ports

----    -----------       --------    -----

0030.4825.4441 DYNAMIC GI0/20

Total Mac Addresses for this criterion:1

Idc-2960g48-a14-114>q