How to identify which server are connected in a switch?

[samuel0901]

Hi,

Many servers are connected to a switch?

How to identify what server are connected to which port remotely?

Thanks!

Samuel

[farkascsgy]

You can trace your servers with the following methods:

show arp | include "IP address"

from this output copy the MAC of the server and use this address in the nest command.

show mac addres-table | include "MAC"

VLAN MAC Type Port

100 xxxx.xxxx.xxxx DYNAMIC Gi0/1

Finally you will got the port number where the server connects to.

bye

FCS

Please rate me if I helped.

[samuel0901]

it works in many switches.

but don't work in catalyst 5509, since no "show mac addres-table". Is there any other command instead?

[bella]

CatOS or IOS? Try with dash after the mac

show mac-address-table

[bella · Accepted solution]

or show cam

[samuel0901]

it's CatOS.

i'll try it tomorrow when in office. thanks!

[samuel0901]

hi bella,

it works. thanks a lot! :)

Samuel

[Anand Narayana]

Hi Sam,

just issue the command show ip arp , it will display some thing like this for know the MAC address & the VLAN number.

Protocol Address Age (min) Hardware Addr Type Interface

Internet 10.2.1.18 9 0800.6913.710e ARPA Vlan2

to know on which port it is connected, just issue the command as mentioned below

sh mac-address-table address 0800.6913.710e

Mac Address Table

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

Vlan Mac Address Type Ports

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

2 0800.6913.710e DYNAMIC Po1

hpe this will help you to identify your servers.

rate this post.

[fvanlancker]

How come a layer 2 switch holds an ARP-table? Isn't it something a layer 3 device should have?

thx in advance,

[gmaccisco1]

Hi,

I have a L3 switch (CAt 3560) and when I do a show arp I only see the private ips for my internal network through vlan 2 which is only for managemnet of this switch on port gi0/1 but no MAC address for the devices I have connected to other ports or interfaces with public IP address?

this switch sits on the edge of my network connecting my routers and PIXs together.

is this naural behavior? i think I must see the MAC addresses all the devices ocnnected to this switch ports?!

any thoughts?

Thx,

Masood