256 static Ip's and vonage

Posts: 6 · New Forum Member Joined: Apr 22, 2003 Posts: 6

Just got my goodies today, and of course it does not work. I have a DS1 (t-1) here, I use a Cisco 2600 router, which in turn I hook into a 24 port switch to run servers, downstairs, I uplink a 8 port hub into the 24 port switch. I run all static IP's on my network. The vonage gear wont use static IP's as it is not configuarable, it wants DHCP, so I bough a linksys router, and plugged that in to my downstairs uplink, works fine, so long as my computer is set to DHCP, which I refuse to do for network afmin reasons. Now, I can upink the hub to the linksys, and just use the linksys for the vonage, but you see the pile of equipment that is sitting on my desk. Why can I not configure the ATA 186, that would solve all my troubles.

Posts: 27 · Posted: Tue Apr 29, 2003 12:22 am Post subject:

Why not turn on DHCP on the 2600 and just have it use an address range that's not being used by devices with static IP's (I'm guessing you don't have 256 hosts active)? That'd simplify things a lot, and I'm sure it would work.

You have a cool home network, by the way. Why all the iron for the house? Smile

Posts: 6 · New Forum Member Joined: Apr 22, 2003 Posts: 6

No DHCP in the 2600, at least not as far as I know, trying to get dhcpd to compile on OS X.

As for my network, well, I needed a toy Smile

Posts: 27 · Posted: Tue Apr 29, 2003 12:37 am Post subject:

Fun toy!

The 2600 definitely supports DHCP. Here's the config from my Cisco router:

ip dhcp pool CLIENT
network 10.7.7.0 255.255.255.0
default-router 10.7.7.1
dns-server 10.7.7.20 66.46.125.41
lease 0 2
ip dhcp excluded-address 10.7.7.1 10.7.7.99

This one goes on your internal facing Ethernet port:
ip address dhcp client-id Ethernet1

Of course, change the IP addresses around to fit your IP's.

Here's a sample config of a border router on Cisco's website. Has some DHCP hints:
http://www.cisco.com/warp/customer/109/router_behind_cm_19268.shtml#configs

Posts: 6 · New Forum Member Joined: Apr 22, 2003 Posts: 6

Nasty wrote:

Fun toy!

The 2600 definitely supports DHCP. Here's the config from my Cisco router:

ip dhcp pool CLIENT
network 10.7.7.0 255.255.255.0
default-router 10.7.7.1
dns-server 10.7.7.20 66.46.125.41
lease 0 2
ip dhcp excluded-address 10.7.7.1 10.7.7.99

This one goes on your internal facing Ethernet port:
ip address dhcp client-id Ethernet1

Of course, change the IP addresses around to fit your IP's.

Here's a sample config of a border router on Cisco's website. Has some DHCP hints:
http://www.cisco.com/warp/customer/109/router_behind_cm_19268.shtml#configs

Crap, wrong network, Cisco 1600 on this one, and that link asks for a password, any ideas on how to enable the 1600 for DHCP? Thanks, if I can get away from fiddlign with compiling dhcpd on OS X that would make me a lot happier, one less boxen to worry about.

Posts: 27 · Posted: Tue Apr 29, 2003 5:54 am Post subject:

The commands are the same across the router platforms, so it'll be the same whether it's a 2600 or 1600.

Here's a DHCP configuration guide:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcprt1/1cfdhcp.htm

Here's a link to Cisco IOS 12 documentation in general:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/index.htm

Posts: 4 · New Forum Member Joined: May 28, 2003 Posts: 4

What do you mean the ATA 186 isn't configurable? Hold down the button on the gateway and open line 1 to it. It will walk you through the configuration with voice prompts.

It is a Cisco product and they provide good online support documentation.

Posts: 3 · New Forum Member Joined: Jun 18, 2003 Posts: 3

I'm having this exact same problem - configuring the ATA with a fixed IP address.

Looks like the ATA can easily be set up with a fixed IP address, just use the voice config menus to deactivate DHCP lookup and punch in a fixed IP address. See manual here:
http://www.nikotel.net/down/ATAConfigurationInstructions.pdf

Doesn't look that hard, right? UNFORTUNATELY the Vonage ATA is protected by a PASSWORD! Whenever I follow the instructions in the manual, I hit a 'passwrd' prompt. No help from Vonage yet.

Anybody have any luck with this?

Robbo

Posts: 44 · Posted: Wed Jun 18, 2003 11:56 am Post subject:

I dont see the reluctance to use DHCP here.

My network is statically addressed for the most part, but I have no problems with running DHCP for the ATA to assign it an IP.

Ive ISC-DHCP running configured as follows

subnet 81.6.xx.xx netmask 255.255.255.240 {
}

host vonage {
hardware ethernet 00:0A:F4:53:xx:xx;
fixed-address 81.6.xx.xx;
option routers 81.6.xx.xx;
default-lease-time 0;
}

This way it only replies to dhcp requests from the ATA - nothing else. The ATA gets assigned a nice static IP on my DSL line. (Sensitive parts above masked with 'xx's)

This should satisfy anybody worried about security.

Posts: 83 · Posted: Wed Jun 18, 2003 2:04 pm Post subject:

Likewise, I agree with Frasier. Why the "Anti-DHCP" lobby?

You can lock down DHCP to just answer to the ATA and serve up a single DHCP address.

I use Reserved DHCP which locks the Vonage ATA-186 MAC address to the same IP address no matter what.

It's the same as static addressing - so what's all this flap?

Puzzled

Papu Papu