Dual Home BGP routing with two ISP with failover

[kartik.shah1]

Hi,

Scenario: In our network, we have 2 ISP A (250 Mbps) & B (75 Mbps). We have 2 Cisco router. ISP A terminated on Router A & ISP B terminated on Router B. We have 2 Firewalls running in High Availability. 

We have our own AS number with /24 IP pool. 

4 User vlans are there - 3 for PPPOE (Vlan 201,202,203) & 1 for Lease Line (Vlan 251).

We are planning to have BGP routing with both ISP. Vlan 251 & vlan 201 traffic should be routed via ISP A & remaining vlan 202 & 203 via ISP B.

As firewalls are running in HA, there must be only 1 gateway to them so i cant use Multiple HSRP. 

I have read that it is possible to load share using Bgp but dont have perfect idea about that. 

Can anyone help me how i can achieve load sharing with failover?

Regards,,

Kartik

[Georg Pauwen]

Hello Kartik,

I sort of remember you dealing with that or a similar issue a short while ago ? Either way, check this link and scroll down to 'BGP topology 6', which matches your setup and gives you 6 different configuration options.

If you have trouble, post the configs of both your routers, that way, the necessary configuration changes can be added.

http://showipbgp.com/bgp-configurations/cisco.html

[kartik.shah1]

Hi gpauwen,

Yes thats true, i am struggling with this scenario.

Thanks for Link,

I will go through this link and will inform you if i need more help.

Thank you,,

regards,