03-31-2008 08:46 AM - edited 03-05-2019 10:05 PM
We are implmenting VoIP in one of the center where we have configure DHCP server on 3560. We are using Nortel VoIP phones and we need to set option 128 and 191. I am looking for help as how we can set these option on cisco 3560 switch DHCP. Thanks in advance.
03-31-2008 08:50 AM
Essentially under your dhcp scope you can configure these options just by typing options and your option number with the IP.
http://www.cisco.com/en/US/docs/ios/12_4/ip_addr/configuration/guide/hipdhcps.html
Hope this helps
Excerpt from the above doc
option code [instance number] {ascii string | hex string | ip-address}
Example:
Router(dhcp-config)# option 19 hex 01
03-31-2008 09:19 AM
I have gone through this and not clear exact config as i am not sure what these [instance number] {ascii string | hex string | ip-address} stand for.I am reffreing below document extract for configuration of DHCP for Nortel Phone
The format of the String for the 128 Site Specific Option is:
Nortel-i2004-A,iii.iii.iii.iii:ppppp,aaa,rrr;iii.iii.iii.iii:ppppp,aaa,rrr.
Where âAâ = the Hardware Revision of the i2004 Phone
âiii.iii.iii.iiiâ = the IP Address of the Call Server (S1 or S2)
âpppppâ = port number for the Call Server
âaaaâ = the Action for the Server
ârrrâ = the Retry Count for the Server
The Site Specific Option #191
Where: âAâ = Hardware Revision of the i2004 IP Phone
âvvvvâ= The VLAN ID in Decimal
VLAN-A:vvvv
thanks
03-31-2008 09:32 AM
Unfortunately I am not well versed on the nortel side.
I would try this though
option 191 ip x.x.x.x
and see if your nortel phones pick that up.
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