Link Aggregation - MPLS & RADIUS

[tadkov]

Is it possible to enable LAG via two separate routed links such as MPLS and RADIUS via LTE ISR?

I have a site that currently has connectivity via the clients network that routes us back to our ISP MPLS router via a 5505 ASA connecting to their PA220 Firewall,however this can be unreliable at times and we have minimal communication with their IT team.

I would like to connect a 1111 router operating on a RADIUS account that will route traffic back to our data center and aggregate this with the MPLS link to increase bandwidth if possible.

I can set this up as a redundant link but it would be beneficial to utilise all the bandwidth available as the 4G signal can be choppy out there.  

I'm thinking that both the MPLS link and ISR advertising the same network will be one hurdle.  Though they both need to be able to advertise in the event one of the links goes down.

Let me know if you need further information.

Cheers,

[Georg Pauwen]

Hello,

for a better understanding of your topology, can you post a schematic drawing showing what is currently connected, and what connectivity you want to achieve ?

[tadkov]

Hi Georg,
This is the general topology - I would like to be able to use both the LTE and the MPLS connectivity to increase the site bandwidth.  Both paths go over the same ISP and terminate at our data centre.  I'm not entirely sure if the LTE connectivity ends up at the same MPLS router but I can't think of where else it would go.

Does this make sense?

[balaji.bandi]

Is it possible to enable LAG via two separate routed links - when you say routed link i take this as Layer 3 link ? or Layer 2 ?

or you can do other option load share between the links.

as asked on other post good to have how your exiting working and what you looking to future some diagram helps with any config.

[tadkov]

Thanks Balaji,  I've posted a topology to Georg's reply.   

Yes, Layer 3 link. 

I'm trying to achieve the load share if possible.  Failing that I will just have the LTE connection as the redundancy.   The MPLS is currently only 20Mbs and at the mercy of the client's network. 

[balaji.bandi · Accepted solution]

You can not bundle them, but you can load-share, by splitting the load of your Lan network 

example :

10.10.10.0/24 network can use LTP

20.20.20.0/24 network can use MPLS

and you can do failover if any one of the links failed using IP SLA tracking

This is a commonly used case for most of the network people.

Again above suggestion is based on the post - we need to see what config you have in both routers.

are you looking both sides load-share or only from the branch office to DC ?

[tadkov]

Thanks Balaji - I will just enable the redundant link then.

It would be too difficult to just split networks like that and achieve a good result.

There's only one router being configured here.  The MPLS connection comes via the firewall IPSec tunnel back to the firewall connected to the MPLS router (I can't access the ISP routers).

This is what I currently have configured on the router to enable redundancy:

router ospf 1
 redistribute static metric 200 subnets route-map AllowDefault
 passive-interface default
 no passive-interface GigabitEthernet0/0/0
 network 10.1.144.0 0.0.15.255 area 0
 default-information originate metric 200
!
ip prefix-list DefaultOnly seq 5 permit 0.0.0.0/0
!
route-map AllowDefault permit 10
match ip address prefix-list DefaultOnly
!
route-map AllowDefault deny 20

Thanks for your help.  Saved me a lot of time trying to achieve something that wasn't possible.