Cisco 3850

naqibsafi · ‎10-14-2019

Dear All,

please how to solve this problem?

SW3850LAB#traceroute mac 54bf.6471.b5ef 54bf.6471.cd42
Error: Source Mac address not found.
Layer2 trace aborted.

thanks,

paul driver · ‎10-14-2019

Hello

@naqibsafi wrote:

Dear All,

please how to solve this problem?

SW3850LAB#traceroute mac 54bf.6471.b5ef 54bf.6471.cd42
Error: Source Mac address not found.
Layer2 trace aborted.

thanks,

Are the hosts active at this time?

On the L3 switch/router you should be able to validate these mac address against the arp table.

sh ip arp | in 54bf.6471.b5ef

you could also trace the mac via the ip addresses

traceroute mac ip 1111 2222 detail

Please rate and mark as an accepted solution if you have found any of the information provided useful.
This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul

naqibsafi · ‎10-14-2019

I try it so many time but no find source MAC and i also try wit IP address to trace MAC

Mark Malone · ‎10-14-2019

hi

Its telling you the source MAC is not valid , is it online in the mac address table at layer 2 , the 1st mac ?

working 3850 example

#traceroute mac 00d0.8309.8729 2c3e.cf22.7d6b
Source 00d0.8309.8729 found on xxxxxxxxxxx
1 xxxxxxxxxxx (172.21.x.x) : Gi1/0/4 => Vl253