if you don't have security features enabled (dhcp-authority, source-verify) you can assign the IP statically to the CPE.
It's not the finest way but works.
Through DHCP-Process you can assign the IP-Address statically to the CPE-MAC-Adress, its the better way to solve fix-IPs,
but if the CPE is changed you have to change the MAC-Address.
Some ProvisioningSystems are able to assing IP-Addresses to the Modem-Mac-Address, because in some cases it's included
in the dhcp-request of the cpe.
Thanks for your info, you said that some provisioning system can able do static ip even not knowing the mac address of the CPE? is that what you mean?
Yah you're correct that if CPE-MAC-Address were change you have to get the new MAC-Address and bind it again in DHCP.
This patch is of 2.0.4, and its stable. I run it on several locations for ~10k modems and ~12k CPE
-- Rafal@Sloniewski.pl;ELIO-RIPE;
Cisco&Docsis Admin; LIR pl.tkk
Hi saintlan1,
if you don't have security features enabled (dhcp-authority, source-verify) you can assign the IP statically to the CPE.
It's not the finest way but works.
Through DHCP-Process you can assign the IP-Address statically to the CPE-MAC-Adress, its the better way to solve fix-IPs,
but if the CPE is changed you have to change the MAC-Address.
Some ProvisioningSystems are able to assing IP-Addresses to the Modem-Mac-Address, because in some cases it's included
in the dhcp-request of the cpe.
cheers,
Benedikt
Hi Benedikt,
Thanks for your info, you said that some provisioning system can able do static ip even not knowing the mac address of the CPE? is that what you mean?
Yah you're correct that if CPE-MAC-Address were change you have to get the new MAC-Address and bind it again in DHCP.
froi,
froi,
yes, you can assign the CPE-IP address according to the CM-MAC-Address.
If you're able to capture the DHCP-Traffic between CPE and Provisioning with wireshark look at:
-> Bootstrap Protocol
--> Option: (t=82, l=14) Agent Information Option
---> Agent Remote ID: CM-MAC-Adddress (normally)
What provisioning are you using?
regards,
Benedikt
Also keep in mind that there may be some config on the CMTS needed for option 82 to work.
For example on Cisco CMTSes you need to add the following command for option 82
ip dhcp relay information option
Try my patch to docsis_server.
http://www.docsis.org/node/319
Rafal@Sloniewski.pl;ELIO-RIPE;
Cisco&Docsis Admin; LIR pl.tkk
elio,
I followed your link and wanted to ask for the version 3.5. Is the patch designed for that
or runs it stable for now?
thank you
Benedikt
This patch is of 2.0.4, and its stable. I run it on several locations for ~10k modems and ~12k CPE
--
Rafal@Sloniewski.pl;ELIO-RIPE;
Cisco&Docsis Admin; LIR pl.tkk