Re: Cisco 1841 Router
- From: Mack <estatebarnes@xxxxxxxxx>
- Date: Fri, 15 Jun 2007 03:46:14 -0000
On Jun 14, 8:32 pm, "J.Cottingim" <jcottin...@xxxxxxxxx> wrote:
On Jun 14, 9:26 pm, Mack <estatebar...@xxxxxxxxx> wrote:
I'm really new with working with Cisco Routers, but have a question I
hope someone will be able to help me with. I have a Cisco 1841 Router
with VWIC MFT-T1 that supports up to two T1 lines but I will only be
running one to the router. I have spent 20 something hours researching
and trying to figure out how to configure it. Of course I can do most
of it in SDM but my problem comes with configuring it for the public
IP addresses (There will be 5 public IP's), I have tried setting up a
Multilink1 but unsuccessful (can't get internet connection and tells
me my MultiLink is down, but I only have 1 T1 running to it, but
unsure if I need the Multilink because there will be only one T1
running to it), if anyone has any commands that I can enter to
configure it that would be great or lead me somewhere in the right
direction.
You should use a multilink interface to "bond" several physical links.
Since you are only going to use a single T1, this is not your
solution.
When you say "There will be 5 public IP's" what exactly do you mean?
Have you been given 5 IP's to use from an ISP? If so, the ISP has
probably assigned you a /29 address range. This would provide for 6
usable addresses, one of which the ISP would use for their end of the
point-to-point T1.
The interface you are using will present itself as "controller x/y"
This is your "physical" interface - where you'll need to configure
line coding, framing and the timeslots you want to use.
Here's an EXAMPLE of the controller:
controller T1 0/1
framing esf
linecode b8zs
channel-group 0 timeslots 1-24
When you enter the last line of this, a Serial interface will be
created.
Here's an EXAMPLE of what the Serial interface might look like.
interface Serial0/1:0
ip address xxx.xxx.xxx.xxx 255.255.255.248
encapsulation ppp
If you have the everything correct, you'll get something like:
Serial0/1:0 is up, line protocol is up
The first "up" would indicate you have the controller configured
correctly,
The second "up" indicates you have the correct encapsulation.
You'll probably need a static route to forward traffic to the
internet.
There's two common types of static routes - either will work for you.
Here's the EXAMPLEs
ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx ! -- this will be IP
address of your ISP's router.
- or -
ip route 0.0.0.0 0.0.0.0 serial0/1:0
post your config when you get it close - we may be able to help
further.
Be SURE to mask the IP addresses and any passwords.
Good luck
JC
Thanks for your help! This might be a stupid question but how do I
delete the MultiLink1? And once I about get it configured what command
do I enter to show the config to post? Thanks again!
.
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