A quick note about finding your devices wich are connected to one of your cisco switches.
I always start on the main switch (core) to find the device.
show cdp-neighbours detail
show mac address-table
First we have to ping the device to get an arp entry.
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.1, timeout is 2 seconds:
When the ping is successfull you check the arp table to find the mac address of the device#Show arp | include 192.168.0.1
1 0023.7d88.27bf DYNAMIC Po1
Now we know that it’s behind interface Port-channel1 (Po1), so let’s find out which interface are is used in the Port-channel.#show interface Po1 | include Members
Members in this channel: Gi1/0/47 Gi1/0/48
With that in mind, let’s see what switch is connected to those interfaces#sh cdp neighbors
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S – Switch, H – Host, I – IGMP, r – Repeater, P – Phone,
D – Remote, C – CVTA, M – Two-port Mac Relay Device ID Local Intrfce Holdtme Capability Platform Port ID
Gig 1/0/48 139 R S I WS-C3560G Gig 0/20
Gig 1/0/47 139 R S I WS-C3560G Gig 0/19
(You can also use the show cdp entry <Device ID> if you have a lot of switches)
When using show cdp neighbours detail you can even get the coresponding ip address!
Now ssh into the second switch and look if it finds the mac address.
1 0023.7d88.27bf DYNAMIC Gi1/0/41
Cool, now you know that it’s connected to interface Gigabit 1/0/41!