ā06-09-2011 07:36 AM - edited ā03-16-2019 05:22 AM
Hi all experts,
I configure site to site vpn and currently soft phone can work from remote site to connect main site CME. But Hard phone still cannot work.
This is basic network plan.
Main Site Branch Site
CME >>10.2.2.0/24 (data) >>> ASA >> Router >>> INTERNET <<< Router <<10.30.3.0/24< L3 Switch <<< pc & hard phone
| |
| |
172.16.1.0/24 ( voice )
Site to site VPN is ASA to Router , and can access data network from branch site and also work soft phone. But for hard phone, can't give same subnet & IP as voice network .
So I would like to know that
1) can I configure manual static IP to hard phone with different IP ? do I need to create voice vlan in branch site ?
2) Can I configure Hard phone to get DHCP address from CME cross over VPN and how to configure it ? If I configure ip helper-address (point to CME ) on branch router, Soft phone cannot work.
Please advise me possible solutions to resolve this problem.
Thanks,
Chan
Solved! Go to Solution.
ā06-09-2011 08:07 AM
multiple options
1. configure dhcp scope with option 150 parameter at remote site. Hand out remote IP address but still point option 150 to the ip address of the CME.
2. use DHCP at remote site to get ip address, but manually configure TFP server on phone to the CME address.
3. Manually configure IP address, mask, gateway, and tftp server on phone to correct settings for remote site vlan, but point TFTP at CME address.
ā06-10-2011 06:07 AM
in IOS config you could do this for both PC's and phones
ip dhcp pool PCandPhones
network 10.30.3.0 /24
default-router 10.30.3.? (input your router address here)
option 150 ip 10.1.1.10 (ip address of your CUCM server publisher or TFTP server primary)
ā06-09-2011 08:07 AM
multiple options
1. configure dhcp scope with option 150 parameter at remote site. Hand out remote IP address but still point option 150 to the ip address of the CME.
2. use DHCP at remote site to get ip address, but manually configure TFP server on phone to the CME address.
3. Manually configure IP address, mask, gateway, and tftp server on phone to correct settings for remote site vlan, but point TFTP at CME address.
ā06-09-2011 04:28 PM
Thanks KKing,
Can you show me with dhcp configuration example ? In remote site, I used 10.30.3.0/24 for pc and PC are used static IP, so can I use dhcp scope with 10.30.3.0/24 for ip phone ?
Thanks alot.
Chan
ā06-10-2011 06:07 AM
in IOS config you could do this for both PC's and phones
ip dhcp pool PCandPhones
network 10.30.3.0 /24
default-router 10.30.3.? (input your router address here)
option 150 ip 10.1.1.10 (ip address of your CUCM server publisher or TFTP server primary)
ā06-10-2011 07:42 PM
Thank you so much KKing !
I got it now .
I can call from Main site to hard phone at remote site . I configure dhcp pool in L3 switch at remote site reference by ur guide line.
Thanks million KKing.
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