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how to determine which swich port be connected to a device with ipv6 ?

Sean Cheung
Beginner
Beginner
2 Replies 2

Kasun Bandara
VIP Advocate VIP Advocate
VIP Advocate

Hi,

 

you can use IPV6 neighbor discovery for this. check below guide for commands. This will show connected neighbors if any. and use ARP table to identify any IPV4 user learnings.

show ipv6 nd

 

 

 

https://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/unicast/configuration/guide/l3_cli_nxos/l3_ipv6.html#48831

 

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Good luck
KB

pman
Enthusiast
Enthusiast

Hi,

 

switchport is a Layer 2 configuration.

There are two types of switchports: trunk or access.

port that configured with switchport (access or trunk) can pass both IPv6 and IPv4.

A Layer 2 port can transmit / receive both IPv4 and IPv6

To see where IPv6 device is connected:

show ipv6 neighbor binding

show ipv6 nd

show ipv6 neighbors

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