Can I aggregate two different link bandwidth together

[A.K.M. Sayeed]

I have two different links in my office (factory) to connect to Head office from factory. One is 3Mb and another one is 2Mb which is used only for backup purpose when the primary 3Mb goes down. Otherwise the backup 2Mb link remains useless. Both of them are provided by same vendor. I am thinking to aggregate these two different links bandwidth together. Both link will be live together and serves as a single one providing 5Mb at a time. When the primary 3Mb falls another one will route data packet to the destination and vice versa.

Now the question is it possible?? If possible how?

Please help with details answer with necessary links and if any devices needed.

[JATINDER KUMAR]

what type of link coming to the factory... we are using a linksys  RV042 aggregator for this kind of thing but that is in ADSL i think that can work with ur scenario also.. give a shot

[A.K.M. Sayeed]

All connection are radio modem to Cisco 2611 Router is ethernet connections. Then router to Cisco switch is also ethernet connections. The radio modem connets to the POP of service provider.

Please help.

[JATINDER KUMAR]

Check with the solution which i have posted above

[Haris P · Accepted solution]

There are two solutions

1.With BGP

• Take 2 subnets from your ISP
• You can establish BGP multihoming with your ISP and advertise  First subnet  through 2 Mb link and secodn subnet through 3 Mb link .
• Advertsie both of your subnet with AS-prepend through both upstreams for failover

2.With IP SLA tracking

• Tell your ISP's to route First subnet/some IP's through 2Mb link and tell ISP to configure ip sla tracking for that
• tell isp to route second subnet thrugh 3mb link and tell isp to configure ip sla tracking for that
• Tell ISP to route both of your network with higher cost also ,so that each lnk will act as backup to one another

Regards

haris

[A.K.M. Sayeed]

I have some confusion regard this. Could you please expalain a bit more easily. Do I need any other device to do so?

Please help.

[Haris P]

Can you attach your network diagram ?

[A.K.M. Sayeed]

Dear Haris,

Please find the network diagram attached. Let me know if you require any other information regard this. I am eagerly waiting for your reply.

Best Reagrds,

Sayeed

[Haris P · Accepted solution]

Dear Sayeed ,

since both of your connections are from same ISP ,you can tell your ISP to make the load balancing for you. No need to do anything on your side

Let's say you have 8 public IP's from the ISP,devide them to two subnets and then tell ISP to route first subnet thru one link and second subnet through other link

the ISP side config will be as given below

***********************************8

ip sla monitor 16

type echo protocol ipIcmpEcho 10.100.110.210 source-ipaddr 10.100.110.209
ip sla monitor schedule 16 life forever start-time now

track 138 rtr 16 reachability

ip sla monitor 17
type echo protocol ipIcmpEcho 10.100.111.210 source-ipaddr 10.100.111.209
ip sla monitor schedule 17 life forever start-time now

track 138 rtr 16 reachability
track 139 rtr 17 reachability

ip route 78.87.87.0 255.255.255.252 10.100.110.210 track 138
ip route 78.87.87.4 255.255.255.252 10.100.111.210 track 139

ip route 78.87.87.0 255.255.255.248 10.100.111.210 200
ip route 78.87.87.0 255.255.255.248 10.100.110.210 200

.

[A.K.M. Sayeed]

Yes!!! I am step forward accoding to your shown way. Thank you very much. Will come to you again if there any problem persists.

Many Thanks.