DHCP on WAN side? 2

[pattm]

Working on a new install. Is there a way to get LAN 2 (WAN) to pull a DHCP address from the cable modem? the ISP doesn't do traditional static addressing. They require the device behind the modem to pull a DHCP address and they then assign the same IP address based on the MAC address of that device. So to them it's "static" but to us it's really not. It's reserved based on the MAC. I'm trying to avoid needing to install an device between..

Thanks

 

[amriddle01]

You shouldn't do it anyway, you need a router/firewall inbetween anyway, unless you like being hacked

 

[hairlessupportmonkey]

just set LAN 2 as a DHCP client.

ACSS - SME
General Geek

 

[TouchToneTommy]

Once it has pulled an address, you will see it in Manager, but greyed out. Now put the same address back in but set to Disabled, and the port will be static, the cable company will be happy because of the MAC address

 

[amriddle01]

But still don't

 

[pattm]

It's been a rough day. We want to install the Portwell SBC but we have yet to do one to date. I need to find my guys training. We do have the IP routing locked down to only the SIP server. so it's secure for now. I know of 3 locations that are installed that way and haven't had any hacking issues in 3 years. My brain is just fried at the moment.. what a week so far..
I just didn't think of the Client mode for the LAN 2. Sorry all.

 

[hairlessupportmonkey]

remember to thank those who helped

ACSS - SME
General Geek

 

[pattm]

agreed hairless.. thank you for slapping me and waking me up. I feel much better today. ha ha

 

[critchey]

By thank I am guessing he was asking for a pink star. That is how you thank helpful posts on this site. I am going to give HSM one for his correct answer on this post since he did not get one.

The truth is just an excuse for lack of imagination.

 

[hairlessupportmonkey]

roger that, over and out.

ACSS - SME
General Geek

 

[IPGuru]

roger that, over and out

this does not make sense, the phrase is an oxymoron (& a cause of great amusement to trained radio operators whenever it is heard )

Over means - over to you I am EXPECTING a reply
Out means don't reply i am disconnecting.

you cannot uses both in the same sentence.


Do things on the cheap & it will cost you dear

 

[holdmusic34]

If DHCP is set to client, there is bonus feature that wipes the hunt groups on a reboot.
Don't use client.

Gunpoint 132 and Bush.Cover's code three

 

[amriddle01]

Only on LAN1 however, doesn't happen on LAN2/WAN

 

[amriddle01]

But what does happen is the gateway learned by DHCP is always used, every IP route manually entered will be ignored

 

[critchey]

It only happens on LAN1 if the IP changes while set to DHCP client. The groups are associated by IP address and when it changes they vanish. If you put LAN1 back to the original IP they come back. It is like magic!

I tested this a while back and posted about it. I think amriddle01 also posted about this before I did as well. Apparently it has been around a long time and will probably never be fixed because of Avaya's own red tape.

The truth is just an excuse for lack of imagination.