>On Fri, 9 Feb 2001, Jeremy Dumoit wrote: > >> >> Getting some good info here.. So cisco has their own implementation of >> HDLC.. is it compatible with other non-cisco devices (nothing particular in >> mind here)? What does the control field of a cisco HDLC frame look like? >> Thanks!!! > >Several non-cisco manufacturers have reverse engineered the cisco >proprietary HDLC and have it working fine......imagestream and redback >come to mind... > >Brian There's nothing terribly secret about Cisco's HDLC, and, as far as I know, it's not one of their patented technologies. HDLC really doesn't offer any advantages over PPP, so it really reflects someone who doesn't want to do minimum reconfiguration of their Ciscos to worry about using PPP for multivendor compatibility. Neither PPP nor HDLC is really optimal for very high bandwidth, such as SONET. There are some protocols such as SRP being proposed for running IP over optical. _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
