[zebra 23014] Zebra as a border?

I searched around but couldn't find any documentation on how zebra performs 
throughput or pps wise.  I was thinking about using zebra as possibly a 
border.  Each zebra server would have a gbit handoff from the upstream and 
need to be able to push 1000mbit, run bgp, peer with the upstream (full 
routes) as well as the other borders, run ospf, and have another gbit 
connection to a cisco switch.  Any of you guys out there using zebra for 
this type of application and how well is it working?

~Shaun