Is the auxiliary port the same an WAN port?

[MojangYang]

Hi guys. I found a cisco 2811 router on eBay because it is cheap. But can i connect it to a separate modem? It has an AUX port but it looks like an rj11 port.

Don’t laugh at me if i missed something

[KarathKasun]

No.  That is a serial port for router maintenance or low speed modems.

 

Its maximum serial throughput is 115.2 kbit/s or ~0.1 mbit/s

[Syntaxvgm]

wrong port. But yea I'd assume you can use it with a modem. IIRC that's fast ethernet, so you'd be limited to 100Mb/s. But I could be getting the model wrong in my head. Here's the manual since the absolute fuckwads at cisco think it's ok to delete all documentation on their website when the product has reached end of life.

 

 

 

cisco 2800 series.pdf

[KarathKasun]

10 minutes ago, Syntaxvgm said:

wrong port. But yea I'd assume you can use it with a modem. IIRC that's fast ethernet, so you'd be limited to 100Mb/s. But I could be getting the model wrong in my head. Here's the manual since the absolute fuckwads at cisco think it's ok to delete all manuals and stuff on their website when the product has reached end of life.

 

 

 

cisco 2800 series.pdf

It is NOT ethernet.  It is serial for an analog (dial-up) modem so that the router can be managed remotely out of band.

 

Quote

Console and Auxiliary Port Considerations
The router includes an asynchronous serial console port and an auxiliary port. The console and auxiliary ports provide access to the router either locally using a console terminal connected to the console port, or remotely using a modem connected to the auxiliary port. This section discusses important cabling information to consider before connecting the router to a console terminal or modem.

 

There is a reason it is sitting right by the serial console port.

 

This is a common mix-up for home game network admins attempting to use commercial grade networking gear.

[KarathKasun]

Also, I hope you like command line configuration as this router has no GUI.  You will need to find the esoteric router reset procedure to clear out old passwords as well.  In addition you need a Cisco serial console cable to connect to the router and configure it.

[Syntaxvgm]

19 minutes ago, KarathKasun said:

It is NOT ethernet.  It is serial for an analog (dial-up) modem so that the router can be managed remotely out of band.

 

 

There is a reason it is sitting right by the serial console port.

 

This is a common mix-up for home game network admins attempting to use commercial grade networking gear.

I said wrong port. I should also have 2 regular fast ethernet ports on the back labled something like FE 0/0 and FE 0/1, am I wrong? Idk I uploaded the manual for him he can figure it out from there, he'll need to refer to the manual if he's never set a router up before.

[KarathKasun]

Just now, Syntaxvgm said:

I said wrong port. I should also have 2 regular fast ethernet ports on the back, am I wrong? Idk I uploaded the manual for him he can figure it out from there.

OP was asking specifically about the AUX port.

 

On a router like this, any port can be the "WAN" port, you just have to configure it to function as such.

[Syntaxvgm]

Just now, KarathKasun said:

OP was asking specifically about the AUX port.

 

On a router like this, any port can be the "WAN" port, you just have to configure it to function as such.

27 minutes ago, Syntaxvgm said:

wrong port. But yea I'd assume you can use it with a modem. IIRC that's fast ethernet, so you'd be limited to 100Mb/s. But I could be getting the model wrong in my head. Here's the manual since the absolute fuckwads at cisco think it's ok to delete all documentation on their website when the product has reached end of life.

 

 

 

cisco 2800 series.pdf

 

[KarathKasun]

29 minutes ago, Syntaxvgm said:

wrong port. But yea I'd assume you can use it with a modem. IIRC that's fast ethernet, so you'd be limited to 100Mb/s. But I could be getting the model wrong in my head. Here's the manual since the absolute fuckwads at cisco think it's ok to delete all documentation on their website when the product has reached end of life.

 

 

 

cisco 2800 series.pdf

 

[Syntaxvgm]

11 minutes ago, KarathKasun said:

Right after I said wrong port, don't correct me because you read what you want. I'm talking about the router, as any reasonable person would assume, since I said that's the wrong port. He can use the router, and I talk about this because it's what he wants to do, find the right ports and use the router. I made the assumption that the router is limited to fast ethernet- could be gigabit, but I think the 2800 series is fast ethernet. Check the manual I uploaded if that detail is important, could be gigabit but I doubt it.

I mean if you didn't get it the first time this should have clued you in

18 minutes ago, Syntaxvgm said:

I said wrong port. I should also have 2 regular fast ethernet ports on the back labled something like FE 0/0 and FE 0/1, am I wrong? Idk I uploaded the manual for him he can figure it out from there, he'll need to refer to the manual if he's never set a router up before.

[MojangYang]

1 hour ago, Syntaxvgm said:

I said wrong port. I should also have 2 regular fast ethernet ports on the back labled something like FE 0/0 and FE 0/1, am I wrong? Idk I uploaded the manual for him he can figure it out from there, he'll need to refer to the manual if he's never set a router up before.

Yes it does have those FE ports on the back

[Syntaxvgm]

9 hours ago, MojangYang said:

Yes it does have those FE ports on the back

You're probably going to need a console cable and a serial usb adapter. There's some that terminate in USB instead of db9 to save money. You'd probaby want to use something like putty on pc to manage it over the serial connection.