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Static Modem IP (CPE side)

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javierg
Static Modem IP (CPE side)

Dear All

I need to setup an UBR7246VXR to support static IP designation on the customer side for built in modem/routers. The modem will use a dynamic IP for the provisioning side, but the IP that will use for the built in router should be an static IP.

Any idea of how to do this?

Thanks.

Capm
DHCP

The router has a mac address you can assign a static entry for in your dhcp if that is what you want to do. I guess it depends on how your provisioning system is set up. Manually, you just add an entry to your dhcp config for that mac address to get that IP, any automated system would have to have a function that adds it in for you.

javierg
Thank you Capm, I'll try.

Thank you Capm, I'll try.

Roberto Schmitz
Could solve your problem?

Hi!
Could solve your problem? I'm going through the same problem.
We have a modem cable network and I am having trouble determining static address for (connected devices after cable modem) CPE.
It was possible to determine the static address to the cable modem, but can not CPEs.

windwaterwaves
Static IP

We add an entry in the dhcpd.conf file to set up dedicated IP's. The customer receives a dhcp IP but it is always sent the same IP.

# Fire District 8, 69.7.34.30
host firedist86 {
hardware ethernet 00:90:7f:43:0f:05;
fixed-address 69.123.222.111.;
}

We also allow them to hand assign a static IP, for people with subnets, but our problem is we had to turn off "cable source-verify" as it would not allow them to come online. I never spent the time to figure it out, or how to get the dhcp server to tell the cisco those ip's are ok.

Roberto Schmitz
sorted out

To determine static IP address for CPE:

host contrato12_modem{
host-identifier option agent.remote-id 54:D4:6F:CE:CC:6A;
fixed-address 10.161.0.200;
}

kwesibrunee
cable trust on cisco does

cable trust on cisco does just that.

windwaterwaves
Thanks!

thanks for that tip

Eden Yang
Where Can I find the dhcpd.conf?

Where Can I find the dhcpd.conf?

I use "find / -name dhcpd.conf" and can't find it.

I want to assigned the static ip to CPE. what should I do?

thanks for help!

windwaterwaves
Be careful editing the file

Be careful editing the file if you have a management system that will overwrite it. It is in /etc/dhcpd.conf typically and you need to be super user to get to it. su vi /etc/dhcpd.conf