multilink ppp two t1 connections with two ips

[mdacoron]

Hey Guys,
I wanted to know if anybody know if I can multilink two ppp connections that are currently setup on one ip address to add on another ip address?

Right now we have an ip setup and we are trying to move to bgp and need to change the ip to a /24. They have given us the new ip to setup but I do not want to take down the current one to add the new one in. Is it possible to have both ip addresses given to us by our carrier and both be up?

interface Multilink1
ip address xxx.xxx.xxx.xxx 255.255.255.252
no cdp enable
ppp multilink
ppp multilink fragment disable
ppp multilink group 1
!
interface FastEthernet0/0
ip address xxx.xxx.xxx.xxx 255.255.255.224
duplex auto
speed auto
!
interface Serial0/0/0:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/0/1:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1

 

[mdacoron]

Can I do something like this along with the current settings?

interface Multilink2
ip address xxx.xxx.xxx.xxx 255.255.255.252
no cdp enable
ppp multilink
ppp multilink fragment disable
ppp multilink group 2
!
interface FastEthernet0/0
ip address xxx.xxx.xxx.xxx 255.255.255.224
duplex auto
speed auto
!
interface Serial0/0/0:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
ppp multilink group 2
!
interface Serial0/0/1:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
ppp multilink group 2

 

[Minue]

Hello
Try the below command:

ip address xxx.xxx.xxx.xxx 255.255.255.252 secondary

Regards

 

[mdacoron]

if I do that how would I setup the ethernet interface to use that new ip address?

 

[burtsbees]

It will use both.

/

tim@tim-laptop ~ $ sudo apt-get install windows
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Couldn't find package windows...Thank Goodness!

 

[mdacoron]

if we have two ethernet ports can i setup the other ethernet port to use the new address?

 

[Minue]

Hello
Please can you be more specific about what you want do?This is what I have understood so far.Your'e moving your WAN address from a point-to-point to a /24 and you will be advertising this network to the world.Do you have server that need to be reach from outside?Are you using a private or public address on the LAN?Make sure that the new subnet is not for LAN instead of WAN.
The right configuration all depends on what your'e trying to achieve.
Regards

 

[mdacoron]

right now we have a current connection that is a /27 ip address that is connected by 2 t1 lines. we are given from our provider a new ip which is a /24. I want to test the connection before doing a move to the /24 ip addresses so that our webservers that are in use now dont go down if we were to do a hot cut over to the new ip addresses. This is all being done in preparation for bgp.

 

[Minue]

Hello
In that case the new subnet should be put under the as a secondary addres:
interface FastEthernet0/0
ip address xxx.xxx.xxx.xxx 255.255.255.252 secondary

Please confirm that the web servers are using the public addresses under FastEthernet0/0.

"if we have two ethernet ports can i setup the other ethernet port to use the new address?"

Yes this can be don't without any problems.

Regards