BGP
So the weird thing I don't get about BGP (Border Gateway Protocol), one of them anyway, is why do you need to clear it when you make changes.
I had an issue yesterday that BGP for the site was working and a few months ago the design engineer made changes to the site, and added load balancing to work across two routers on site. When this was done all routes were still be redistributed into BGP from OSPF. however the configuration did not have all of the routes listed in the config using either a route map or redistribute command??
The site continued to work until the circuit took a hit, then BGP reconverged and the missing routes became apparent. the site lost redundancy and lost routes to another area that had only OSPF routes for it.
We had to put in Prefix statements with the other side routes and the extra OSPF area to get it all working. I am not a design engineer, at this time I only fix what is wrong, so I don't always know what they were trying to accomplish when they installed it. We have policies but they don't cover everything and that is when you are left to guess about it and try and figure it out on your own.
I had an issue yesterday that BGP for the site was working and a few months ago the design engineer made changes to the site, and added load balancing to work across two routers on site. When this was done all routes were still be redistributed into BGP from OSPF. however the configuration did not have all of the routes listed in the config using either a route map or redistribute command??
The site continued to work until the circuit took a hit, then BGP reconverged and the missing routes became apparent. the site lost redundancy and lost routes to another area that had only OSPF routes for it.
We had to put in Prefix statements with the other side routes and the extra OSPF area to get it all working. I am not a design engineer, at this time I only fix what is wrong, so I don't always know what they were trying to accomplish when they installed it. We have policies but they don't cover everything and that is when you are left to guess about it and try and figure it out on your own.