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Dual Trunk E1 Router
Dual Trunk E1 Router User’s Guide TECHNICAL: 0118 96 56 000 1-15
Multilink application
Multilink PPP (MLPPP) or Multilink Frame Relay (MLFR) bundles the two E1 ports to pass traffic
at twice the speed of a single E1 link. The standard MLPPP per RFC1990 facilitates interoperability
with routers from other router vendors.
A pair of Dual E1 Trunk Router can be deployed in a a back-to-back configuration offering a high-
speed 4 Mbps point-to-point LAN extension.
Redundancy
With multilink, redundancy is performed at the link layer, if a link is down the traffic is still carried
over the active link. If a failed link comes back up again it is automatically added to the bundle, and
traffic resumes at twice the speed again.