On 10/26/05, Dan Swartzendruber <[EMAIL PROTECTED]> wrote: > > I'd like a little enlightenment here. I remember a post on the > support list a couple of days ago to the effect the shaper wasn't > working with OPT1 (or in fact, anything but WAN and LAN) at this > time. I was a little confused, because I was under the impression > that shaping is done on egress from an interface. e.g. LAN => WAN > traffic is shaped at the WAN and WAN => LAN traffic is shaped at the > LAN. Is this correct? If not, how does it work? If it is correct, > since I don't really care about the inbound traffic, I'd be perfectly > happy with OPT1 => WAN traffic only being shaped.
Correct, ALTQ can only shape traffic exiting (egress) an interface. To shape a WAN link bi-directionally (both ingress and egress traffic), we shape downstream traffic as it egresses the LAN interface and upstream traffic as it egresses the WAN interface. You can still achieve shaping from OPT1->WAN, but you will _not_ see the shaping from WAN->OPT1 (granted, we're on the wrong side of the link to be terribly effective, but it does work, just not as well as having shaping occur on both sides). Interestingly, the way we're currently setup, you'll also see shaping occur from OPT1->LAN. --Bill
