hjan wrote: >> Basically my concern is having an appliance as single >> point of failure. As I increase redundancy in the network >> infrastructure it would be nice if I can achieve desired >> QoS/rate-limiting using the switches themselves without additional gear. > > Traffic shaper / policer often has optical bypass by default or as option. > I use Allot and I'm happy.
I had a PacketShaper 4545 about 5 years ago. It was a nice piece of equipment. It had an internal mechanism to fail the Ethernet interfaces as a closed circuit if the device was rebooted or if it lost power. Ie, a failure would cause a relay to close, disconnecting the internal network guts of the PacketShaper from the copper interfaces and linking the in and out interfaces together to act as a piece of wire; it would not interrupt the flow of traffic if it failed. Now if you had to remove the device from service to replace it with a RMA unit then of course you'd have to unplug it and disrupt traffic. Then again if your network is well-built then losing any single link (short of a link to an upstream SP) shouldn't be a problem for you. I haven't gotten to work with any of Packeteer's units with fiber interfaces but I imagine they support optical bypass units like the SCEs do. I really liked the PacketShapers. They were slick. I own a pair of SCEs right now that I'm trying to get online. I hear they are pretty nice too, but not as turnkey. Justin _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
