MLP on atm interfaces

jeffbriones · ‎05-16-2006

Hi guys,

im still finding some documents here related to MLP on atm interfaces. Most of the documents i found are more on serial interfaces. Will this work.

thanks.

jeff

mounir.mohamed · ‎05-18-2006

Dear Jeff,

Kindly find the below MLP ATM configurations example, i hope that help you

interface Loopback13

ip address 13.13.13.1 255.255.255.252

!

interface Virtual-Template1

bandwidth 2048

ip unnumbered Loopback13

ppp multilink

ppp multilink fragment delay 14

ppp multilink interleave

!

interface ATM1/0.101 point-to-point

description MLPPP Test 1st Link

pvc 0/101

abr 2663 2663

encapsulation aal5autoppp Virtual-Template1

!

interface ATM1/0.102 point-to-point

description MLPPP Test 2nd Link

pvc 0/102

abr 2663 2663

encapsulation aal5autoppp Virtual-Template1

Please rate helpful posts

Best Regards,

Mounir Mohamed

jeffbriones · ‎05-18-2006

Hi Mounir,

would i still configure multilink interface on these one ? another thing is im using BGP on these will this affect my config ?

thanks.

jeff

mounir.mohamed · ‎05-18-2006

Dear Jeef,

There are no problem problem to use BGP through all the links as soon as the links provided by the same provider and you are establishing the session via loopback ip address.

Jeef your case not clear please provide me with the senario that you would like to use to provide you with optimum configurations that can reach you needs.

PLease Rate helpful posts

Best Reagrds,

Mounir Mohamed

jeffbriones · ‎05-18-2006

Hi Mounir,

Before we are using two isp to multihome. Now we had to remove one to cut cost and the other one told us to have a redundancy thru physical link. Its like having 2 fiber links with different geographical path. If one of the two fiber that would be damage, still we'll have connectivity. Here's the setup as per our isp.

1. Multilink via atm.

2. Single Local Router connected to their single router

3. 2 atm interfaces configured multilink for failover

atm1/0 ----fiber--- atm interface

R1 ---- --- ISP Router

at2/0 ----fiber--- atm interface

Here's basically the setup. Its for failover using MLP via atm.

Thanks.

jeff

mounir.mohamed · ‎05-19-2006

Dear Jeff,

I hope to solve your problem this time :)

I got that you have one router with 2 ATM controllers and each controller facing provider router or even interface and and you gone bundle both ATM interfaces by MLPPP, and using BGP over the MLPPP interface Right? So you can use MLPPP via virtual-templete or via MLLP interface

Example 1 - (ATM Router) Virtual-temp interface

interface Loopback1

ip address 1.1.1.1 255.255.255.252

!

interface Virtual-Template1

bandwidth ???

ip unnumbered Loopback1

ppp multilink

ppp multilink fragment delay 14

ppp multilink interleave

!

interface atm1/0.1 point-to-point

description MLPPP 1st Link

pvc 1/1

abr 2663 2663

encapsulation aal5autoppp Virtual-Template1

!

interface atm2/0.1 point-to-point

description MLPPP 2nd Link

pvc 2/1

abr 2663 2663

encapsulation aal5autoppp Virtual-Template1

router bgp 65534

bgp router-id 1.1.1.1

neighbor 1.1.1.2 remote-as 109

neighbor 1.1.1.2 update-source loopback 1

Example 2 - MLPPP interface

Interface loopback1

ip address 1.1.1.1 255.255.255.252

interface Multilink1

ip unnumbered Loopback1

no ip redirects

no ip unreachables

no ip proxy-arp

backup delay 2 60

ip tcp header-compression iphc-format

no cdp enable

ppp multilink

ppp multilink group 1

ppp multilink endpoint ip 1.1.1.2

max-reserved-bandwidth 100

!

interface atm1/0

no ip address

no ip redirects

no ip unreachables

no ip proxy-arp

encapsulation ppp

keepalive 2 2

no cdp enable

ppp multilink

ppp multilink group 1

max-reserved-bandwidth 100

!

interface atm2/0

no ip address

no ip redirects

no ip unreachables

no ip proxy-arp

encapsulation ppp

keepalive 2 2

no cdp enable

ppp multilink

ppp multilink group 1

max-reserved-bandwidth 100

router bgp 65534

bgp router-id 1.1.1.1

neighbor 1.1.1.2 remote-as 109

neighbor 1.1.1.2 update-source loopback 1

If its not clear pls let me know

Please Rate helpful posts

Best Reagrds,

Mounir Mohamed

jeffbriones · ‎05-19-2006

Hi Mounir,

Thanks, lots of info i got from your config. I was thinkin why multilink and virtual template was provided by my isp. Here's the initial config, please comment on these. And kindly explain some of the commands involve, still finding some sites for these kind of setup.

ISP Side

interface Multilink X

bandwidth 10000

ip address x.x.x.x 255.255.255.252

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

interface ATM3/0

no ip address

no atm ilmi-keepalive

!

interface ATM3/0.1 point-to-point

description ***** 1st BACKHAUL *****

pvc PMSI 0/1

encapsulation aal5snap

protocol ppp Virtual-Template1

!

interface ATM4/0

no ip address

no atm ilmi-keepalive

!

interface ATM4/0.1 point-to-point

description ***** 2nd Backhaul *****

pvc PMSI 0/2

encapsulation aal5snap

protocol ppp Virtual-Template2

interface Virtual-Template1

bandwidth 10000

no ip address

load-interval 30

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

!

interface Virtual-Template2

bandwidth 10000

no ip address

load-interval 30

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

MY SIDE

interface Multilink X

bandwidth 10000

ip address x.x.x.x 255.255.255.252

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

interface ATM4/0

no ip address

no atm ilmi-keepalive

!

interface ATM4/0.1 point-to-point

description ***** 1st BACKHAUL *****

pvc PMSI 0/1

encapsulation aal5snap

protocol ppp Virtual-Template1

!

interface ATM6/0

no ip address

no atm ilmi-keepalive

!

interface ATM6/0.1 point-to-point

description ***** 2nd Backhaul *****

pvc PMSI 0/2

encapsulation aal5snap

protocol ppp Virtual-Template2

interface Virtual-Template1

bandwidth 10000

no ip address

load-interval 30

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

!

interface Virtual-Template2

bandwidth 10000

no ip address

load-interval 30

ppp multilink

ppp multilink fragment-delay 10

multilink-group 1

thanks.

jeff

mounir.mohamed · ‎05-20-2006

Dear Jeff,

Also the configuration you provide will achive your goal and i have no comments, SO go on and feel free to post more

Please Do not forget to mark the Conversation when your problem get solved.

Best Regards,

Mounir Mohamed

jeffbriones · ‎05-24-2006

Hi Mounir,

I would like to ask if where should i implement my acl, is it on the atm interface or on the multilink interface ?

Thanks.

jeff