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IP address in SRST

                   Hi,

I'm using call manager 8.6 in central location .all branch location phones are using central location DHCP servicer for IP address and register with central location call manager. during WAN outage branch location phones will fall in SRST mode.

I have small doubt.

when branch location phones fall in SRST mofe phones will retain the same IP address or it requires local DHCP server for IP address.

please clarrify,

Thanks,

5 REPLIES

Re: IP address in SRST

Hi.
IP phones will have the same ip address and they will use the SRST reference previously onfigured on CUCM to Fallback.

HTH

Regards

Carlo


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IP address in SRST

The phones will retain their IP addresses.

HTH

Regards,

Yosh

HTH Regards, Yosh
Hall of Fame Super Silver

Re: IP address in SRST

The previous answers are correct, in addition the phone will lose their IP half way through the dhcp lease cycle, so if they remain under SRST too long and lease time is short they will lose IP and unregistered.

Chris

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IP address in SRST

Correct Chris +5

That's why SRND suggests two options:

1) configure a DHCP Lease time at least 8 days long

2) Provide a local DHCP service so that IP Phones can go on conmmunicating with their DHCP server

http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/srnd/9x/netstruc.html#wp1184975

Regards

Carlo

Please rate all helpful posts

"The more you help the more you learn"

Please rate all helpful posts "The more you help the more you learn"

IP address in SRST

Good stuff (+5)


Regards,

Yosh

HTH Regards, Yosh
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