01-21-2008 04:09 AM - edited 03-03-2019 08:20 PM
We have one default route towards next E1 interface.But due to High bandwidth utilization we are adding one more E1.
Can we enable load sharing on both E1s on the same Default route.So we can distribute the traffic.
Solved! Go to Solution.
01-27-2008 08:24 PM
HI Patel, [Pls RATE if HELPS]
Since both are E1 Circuits and to load-balance easily CISCO - MULTILINK can be done.
Below is the sample Configuration. MULTILINK will start LOAD Balancing automatically when done.
interface Multilink1
description *****MULTILINK in US-NY*****
ip address x.x.x.x
ppp multilink
ppp multilink group 1
!
!
interface Serial0/3/0
description **CIR 1**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/3/1
description **CIR 2**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Multilink1
description *****MULTILINK in US-LA*****
ip address x.x.x.x
ppp multilink
ppp multilink group 1
!
!
interface Serial0/3/0
description **CIR 1**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/3/1
description **CIR 2**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
PLS RATE if HELPS
Best Regards,
Guru Prasad R
01-27-2008 11:27 PM
Hi,
Yes we can enable load sharing between two E1 interfaces.
Configure two default routes for both the E1 with the same Administrative Distance i.e 1.
see wether IP CEF command is reflected in the sh runn command or not.
by default this load sharing is per destination and you can also configure it for per-packet.
Thanks.
01-28-2008 05:43 AM
Cautionary note:
CEF per-packet load sharing if very effective on link load sharing (on same router) but it also runs the risks of delivering packets out of order. Which can, if severe enough, trigger re-transmits.
01-28-2008 05:47 AM
If I understand your topology diagram, where you have separate physical paths, one option you might also consider is using OER/PfR to dynamically load balance.
01-25-2008 10:48 AM
You can club both of the E1 interfaces in a group and the configure necessary ip address for this group. Following links may help you
http://www.cisco.com/en/US/products/hw/modules/ps2033/prod_technical_reference09186a00800afeb7.html
01-27-2008 08:24 PM
HI Patel, [Pls RATE if HELPS]
Since both are E1 Circuits and to load-balance easily CISCO - MULTILINK can be done.
Below is the sample Configuration. MULTILINK will start LOAD Balancing automatically when done.
interface Multilink1
description *****MULTILINK in US-NY*****
ip address x.x.x.x
ppp multilink
ppp multilink group 1
!
!
interface Serial0/3/0
description **CIR 1**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/3/1
description **CIR 2**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Multilink1
description *****MULTILINK in US-LA*****
ip address x.x.x.x
ppp multilink
ppp multilink group 1
!
!
interface Serial0/3/0
description **CIR 1**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial0/3/1
description **CIR 2**
bandwidth 2048
ip address x.x.x.x
encapsulation ppp
ppp multilink
ppp multilink group 1
!
PLS RATE if HELPS
Best Regards,
Guru Prasad R
01-27-2008 11:27 PM
Hi,
Yes we can enable load sharing between two E1 interfaces.
Configure two default routes for both the E1 with the same Administrative Distance i.e 1.
see wether IP CEF command is reflected in the sh runn command or not.
by default this load sharing is per destination and you can also configure it for per-packet.
Thanks.
01-28-2008 05:43 AM
Cautionary note:
CEF per-packet load sharing if very effective on link load sharing (on same router) but it also runs the risks of delivering packets out of order. Which can, if severe enough, trigger re-transmits.
01-28-2008 05:47 AM
If I understand your topology diagram, where you have separate physical paths, one option you might also consider is using OER/PfR to dynamically load balance.
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