I’ve read the Wiki article on fastpath, and I’m looking for some more input as to whether I’m thinking about this right:
According to the wiki entry:
Bridge fast path is automatically used if following conditions are met:
- no bridge firewall rules (/interface bridge filter, /interface bridge nat) are configured,
- /interface bridge settings use-ip-firwall=no,
- no mesh, metarouter interface configuration,
- sniffer, torch and traffic generator is not running,
This doesn’t mention split horizon bridging. Of course the “silly” answer is that since it’s not listed, then using split horizon does not disable fastpath. I just wanted to make sure this is the case before making a recommendation to someone about some topology decisions in their network design.
If my understanding of fasttrack is correct, then the ingress and egress interfaces must both support fastpath in order for fasttrack to work on a connection. Since the ingress interface might be a bridge interface, if the bridge handler loses fastpath capability then fasttrack won’t help. Is this also correct understanding?