Help setting up Dhcpv6 for Cisco IP Phones

[skarurba]

Hello,

I have a requirement where I need to deploy multiple cisco IP phones in a IPv6 deployment. And each of these phones will be talking to their individual tftp servers. Can you please let me know how we can configure individual dhcpv6 pool for each of the phones which will also include the tftp server details?

Also how do we identify the DUID of each phone?

I'm setting up a lone Dhcpv6 server for this deployment. Do you have a sample which I can refer.

Regards,

Srinivas.

[saif musa]

Hi,

What type of IPv6 dhcp server you are trying to setup ? ( linux platforms, windows or cisco router acting as ipv6 dhcp server ).

Also please just to be sure,  do you mean by DUID above the Directory number DN of  the IP phones ?

Regards

[skarurba]

Hi Saif,

I'm configuring dhcp on cisco switch(C3560E). I have the DUID information for all the phones and trying to assign different tftp server IP's for each of these phones. Below is the configuration I have. 

And I have ipv6 configured in vlan with below configuration. When I set “ipv6 dhcp server” command I see all the phones take IPv6 address but none of them take DNS and tftp details from their designated dhcp pool. But if I update the command “ipv6 dhcp server phone1” in the vlan configuration then all the phones take DNS and tftp details from "dhcp pool phone1" but not from the pool in which we have updated the DUID of the phones.

Thanks,
Srinivas.

interface Vlan333

no ip address

ipv6 address 2001:420:1781:333::/64 eui-64

ipv6 enable

ipv6 nd managed-config-flag

ipv6 dhcp server

!

ipv6 dhcp pool phone2

prefix-delegation 2001:420:1781:333::/64 000300010057D2C012DF

prefix-delegation pool phone2 lifetime 1800 60

address prefix 2001:420:1781:333::/64

dns-server 2001:420:1781:3C7:51EC:F4FD:DA67:DCF8

domain-name cisco.com

vendor-specific 9

  suboption 1 address 2001:420:1781:380:250:56FF:FE9E:2CE

!

ipv6 dhcp pool phone3

prefix-delegation 2001:420:1781:333::/64 0003000138ED18AF8630

prefix-delegation pool phone3 lifetime 1800 60

dns-server 2001:420:1781:3C7:51EC:F4FD:DA67:DCF8

domain-name cisco.com

vendor-specific 9

  suboption 1 address 2001:420:1781:380:250:56FF:FE9E:A6FB

!

[nkleven]

Did you ever get this resolved?