07-14-2009 08:27 AM - edited 03-04-2019 05:25 AM
I was wondering if I could use PPP encap to combine 2 T1 lines on a 2611 router.
My config on the routers are:
interface FastEthernet0/0
description connection to DMZ switch
ip address xxx.15.0.2 255.255.255.252
ip helper-address 10.0.60.2
duplex auto
speed auto
!
interface Serial0/0
description connection to DSU to Corpus
ip address xxx.15.0.5 255.255.255.252
service-module t1 fdl both
!
interface FastEthernet0/1
description NMLI connection 106 Wynn
ip address xxx.26.1.1 255.255.255.252
ip helper-address 10.0.60.2
speed 100
full-duplex
the IOS version is 12.2(8)T10 and the routers have the following hardware:
cisco 2611XM (MPC860P) processor (revision 0x100) with 93184K/5120K bytes of memory.
Processor board ID JAE074002B7 (1945669642)
M860 processor: part number 5, mask 2
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
32K bytes of non-volatile configuration memory.
32768K bytes of processor board System flash (Read/Write)
I know I will have to purchase another T1 DSU/CSU WIC but I was wondering if I could use the following configuration:
interface Serial0/0:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
!
interface Serial1/1:0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 1
interface Multilink1
ip address x.x.x.x
ppp multilink
ppp multilink group 1
07-14-2009 08:32 AM
Hello James,
it should be possible but be aware that this can cause an higher cpu load in comparison to use the two links as L3 parallel links
Hope to help
Giuseppe
07-14-2009 08:35 AM
How would the configuration look if I were to set them up as L3 parallel links?
Thanks for the quick response.
James
07-14-2009 08:43 AM
Hello James,
sorry I was unclear:
you just configure each serial with its own ip subnet:
example:
int ser0/0
enc ppp
ip address 10.10.10.1 255.255.255.252
int ser0/1
enc ppp
ip address 10.10.10.5 255.255.255.252
Hope to help
Giuseppe
07-14-2009 11:49 AM
Would this enable load balancing across the links?
James
07-14-2009 08:33 AM
Yes, you can configure MLPPP but you need to make sure the remote router also supports MLPPP and the configuration must be done at the same time on both devices.
__
Edison.
07-14-2009 08:36 AM
they are both identical 2611 routers, would I need to increase the memory?
Thanks for the quick response.
James
07-14-2009 08:49 AM
Should be fine.
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