BGP Configuration with Dual Router , Dual ISP and dual firewall

Hi,
we have two ISP and both ISP are connected to different router, we have also /24 public ip pool. we are looking for ISP failover, so please suggest us the configuration for the same.


srinivas_ganamurAsked:
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Istvan KalmarHead of IT Security Division Commented:
Hi,

I advise to configure booth router hsrp, and condig standby tracking:

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094e8c.shtml

you need to travk your bgp peeer
rfc1180Commented:
there are a few ways to implement what you want and you have not provided enough information for a config. BGP failover is simply, easy; however, the configuration and troubleshooting can be complex. The typical config is eBGP via your ISPs, on the router you want primary, you would select a higher local preference on the received prefixes and a lower pref (You would just not define one and leave the default [100]). You would then need to configure BGP to run between the two edge routers you have connected to the Internet and that is where the fin gets to start. Here is a good start in getting where you need to be; after reading the document you still need help, come back and ask questions.

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00800c95bb.shtml

If you just want configs:

What is your ASN
What is the ASN of your peer
what is the make/model/IOS Version of your routers
Do you want a full routing table (Typically filtered from your ISP).
You will NEED to post your configs from both routers (Please leave out passwords).
If all you are doing is advertising your routes out with no plans for TE, then I would just
ask for a default from your ISP and set the higher local pref on the default.


Billy

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