Re: Clubbing together of Two serial link using Multilink!

m.pandey · ‎06-07-2005

Dear All,

I have two links of 2Mbps each from same service provider landing to two different serial port at my end.

What I am looking for is to club both the link as one single aggregate link of 4Mbps but the constrain is my IOS which is 12.0(25).

With 12.3 I am aware to configure Multilink PPP and clubbing two interface with this sinle multilik but please suggest how to go ahead with this clubbing with available IOS 12.0

Awaiting your response.

With best regards,

Mani

mail me : manishankarp78@yahoo.com

Show Version output

##########################

Cisco Internetwork Operating System Software

IOS (tm) 2500 Software (C2500-IS-L), Version 12.0(28c), RELEASE SOFTWARE (fc1)

Compiled Wed 30-Mar-05 16:33 by pwade

Image text-base: 0x0303E2D4, data-base: 0x00001000

ROM: System Bootstrap, Version 5.2(5), RELEASE SOFTWARE

BOOTFLASH: 3000 Bootstrap Software (IGS-RXBOOT), Version 10.2(5), RELEASE SOFTWA

RE (fc1)

uptime is 20 hours, 39 minutes

System restarted by power-on

System image file is "flash:c2500-is-l.120-28c.bin"

cisco 2500 (68030) processor (revision D) with 4096K/2048K bytes of memory.

Processor board ID 02039358, with hardware revision 00000000

Bridging software.

X.25 software, Version 3.0.0.

2 Ethernet/IEEE 802.3 interface(s)

2 Serial network interface(s)

32K bytes of non-volatile configuration memory.

16384K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102

spremkumar · ‎06-07-2005

hi

in 12.0 train itself u can have Multilink PPP with 12.0(28b) c2500-i-l.12.0-28b to have the same u need to have 6MB DRAM and 8MB flash.

wud suggest you to chek out this link also which will give u far idea abt which ios to choose for ur box..

http://tools.cisco.com/Support/Fusion/FusionHome.do

regds

anantmc · ‎06-10-2005

Well if you r using dynamic routing protocol, then it is possible to load balance between two link. Again I think it's possible to do multilink PPP in 12.0(25) version code but I'm not sure whether 2500 12.0(25) version code supports multilink PPP.

Regards

Anant

m.pandey · ‎06-16-2005

Dear All,

Thannks for your reply. I was able to configure it using virtual-template option and it's working fine as well as load are also getting balanced both side.

With best regards,

Mani

jsalminen · ‎08-03-2005

I implemented the same technology for T1x2. Except I didn't use virtual-template. I basically created a multilink interface and set encap on two serial int to PPP and put them into a multilink group. The only trouble I've ever seen is that my NMS doesn't do layer 2 interface management so when a T1 goes down you'll need to trap link down or something as the MU interface won't drop if one T1 is down.

pushkarbhatkoti · ‎08-10-2005

Hi Guys,

You should use the RAD IMAXI-E1. It works on the Bonding protocol and automatically clubb ur bandwidth.

u need to place 2 Imaxi -E1 in both side. It is basically inverse multiplexures. Cisco does the same.

It will combine ur 4 E1s to ethernet 10/100.

contact me at pushkarbhatkoti@yahoo.com for more information.

cheers!

additinally if u want to use the cisco feature called multilink PPP feature. use ppp encapsulation on ur all 4 or 2 E1's WAN /serial interface. Create one loopback address in each end. on ur wan put this ip (ip unnberred on loop0). and make this port to member of the multilink groiup. thats all

or

configure it as a bridge irb and use multilink. thats all.