> -----Original Message----- > From: Jared Mauch [mailto:ja...@puck.nether.net] > Sent: Wednesday, May 19, 2010 1:29 PM > To: Jeff Harper > Cc: Deric Kwok; nanog@nanog.org > Subject: Re: useful bgp example > > Nice, but you don't show it as-path filtering your transits out. I > frequently see people take something learned from transit A and sending > it to transit B, and if it happens to be the backup path in-use for > your customer, your transits will accept it and likely pick you as > best-path and hairpin through your network. > > - Jared
Yeah, I left out the actual prefix-list contents, in hindsight I should have added it, so here it is. Also, a typo in the network statement, lol. network 1.1.1.0 mask 255.255.0.0 ip prefix-list NETZ description The networks we advertise via BGP ip prefix-list NETZ seq 10 permit 1.1.1.0/16 ip prefix-list NETZ seq 1000 deny 0.0.0.0/0 le 32
