Good day Colleagues, I want to ask you advice about the policy for BGP prefix filtering. The main idea is to automatize the process of prefix filtering. I've read a lot of articles about it, but I need to discuss it to be sure about the correct way to implement it on practice. A few words about our network... Our company is ISP. We are using C7200, C7600 and AS5350XM for peering, connection to the upstreams and the customers. A few main questions:
- To create the prefix-list or as-path acl I am using RtConf or bgpq. Than I use our own script to connect via telnet/ssh to a router. Is it normal practice? Do you use your own script(perl, bash, etc) or mix of it with the programs like Rancid?
- Very often some prefixes from peers would be filtered by my prefix-list. Should I ask them about the situation (check RIPE, etc.), or just forget about it? What would be better? P.S. I am talking about the prefix-lists because the as-path acls can't do the filtering as strict as the prefix-lists do.
Thank you in advance for any comments, Dmitry