how does dn "auto assign" on cme work?

[net.comm.engr]

hi everyone,

so if ephone registers with cme and get a number with auto assign configured, so does the router save the association of the Mac address and the dn to startup configuration so that particular phone will always be assigned that dn after the router is rebooted? Thanks

[Nishant Savalia]

Hi,

To take into the effect of auto-assign dn's you have to perform reset or restart of the phones.

"auto-assign" command must be followed by a reboot of the phones that are assigned. If you use the type keyword with this command, use the reset command to reboot the phones. If you do not use the type keyword with this command, use the restart command to perform a quick reboot.

If the router is rebooted without restart/reboot of the phones after auto-assign dn then you may loose the auto assigned dn to the phone.

Make sure that router running configuration is saved and phone is restarted / rebooted after auto assignment of dn.

Regards,
Nishant Savalia

[net.comm.engr]

Thanks Nishant.

So if I understand correctly, with "auto assign" configuration, the router will save the association of the MAC address with the dn into the running-config when the phone registers to CME. But for that particular phone to get that same dn after the router is rebooted, I have to save the running-config into startup-config, right?

[Nishant Savalia · Accepted solution]

Hi,

yes you have to save the configuration before router is rebooted.

Regards,

Nishant Savalia

[Mohammed al Baqari]

You need to go to ephone config at least once and save the running config to retain the dn


Sent from Cisco Technical Support Android App

[Manish Gogna]

Hi,

With auto assignment of DN's the mac address - DN association related configuration is automatically added to the running configuration of the router.

HTH

Manish