No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

BGP Routes not advertising on NE-40

Publication Date:  2014-11-20 Views:  218 Downloads:  0
Issue Description
BGP peer was configured , and as per BGP rules of advertising , 1) we need static route or 2) ip address on physical interface to advertise the routes to neighbor,

we used static routes but as customer divided their network in smaller subnets like /26 or /28 (for example : 103.240.240.0/24 was divided in 103.240.240.0/26 and 103.240.240.64/26)

we used static route for these smaller subnets to advertise the , (example : ip route-static 103.240.240.0 26 Null 0 , and  ip route-static 103.240.240.64 26 Null 0 , 
Alarm Information
we were not able to advertise the routes to our neighbor ISP router.  so the internal ip pool cannot reach the internet. and they were not reachable from outside. 

We advertised the /24 network to bgp neighbor . with change in static-route 103.240.240.0 24 Null 0  , (for example we advertised 103.240.240.0 /24)

Handling Process
with change in route we were able to advertise the routes in Bgp and ISP neighbor accepted the routes



Root Cause
we found that as per Internet Service Provider general policies , they do not accept the routes that are smaller than /24. (for example they will not accept route with subnet /26 or /28) 
Suggestions
ISP routing policies should also be acquired for BGP advertisement. 

END