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Product Brief
As enterprise IT managers leverage the convergence of voice, video and data over Ethernet, the need to transport
Ethernet over the WAN at speeds greater than a single T1/E1 increases. Avoid switching to an expensive T3/E3 circuit,
transitioning to an unproven Ethernet based WAN service or spending endless hours configuring IP routing redundancy.
Use the Model 2888 to bond multiple T1/E1 circuits and increase point-to-point Ethernet bandwidth without
overcomplicating configurations or sacrificing resiliency.
Need faster
point to point
connections
A single T1/E1 is not
fast enough any more
introduce cost, risk,
complexity and are
not available
everywhere
reliableT1/E1 circuits and
bond them together for
maximum bandwidth
Complex Router
Configurations
Configuring IP load
balancing is complex
Increases risk router
is misconfigured
Ethernet traffic over the
WAN
Prioritizing some
applications over
others
need dedicated
bandwidth and higher
priority
voice and video
applications will be
unusable
Apply active layer 2/3 QoS
and guarantee applications
the bandwidth they need
The IpLink™ Model 2888 Multi-Megabit Inverse Mux increases point-to-point Ethernet/IP bandwidth over standard
T1/E1 circuits, reducing configuration complexity, and providing active QoS for real-time application requirements.
Q. If all my traffic
Q. If all my traffic Q. If all my traffic
Q. If all my traffic is IP why should I use Ethernet bridging?
is IP why should I use Ethernet bridging?is IP why should I use Ethernet bridging?
is IP why should I use Ethernet bridging?
A.
A.A.
A. The other alternative, configuring a router for load-balancing can be a difficult task. First of all, a router can load
balance outbound traffic only. To get bidirectional load balancing requires complex configuration at both ends.
Secondly, both routers must be configured to assign the same administrative distance and cost to a destination. Lastly,
load balancing at the IP packet layer creates a situation where packets can reach the destination out of order, creating a
problem for streaming media such as video. By using Ethernet bridging and relying on ML-PPP, the configuration is
simplified and the out of order packet problem eliminated.
Q. What happens if one of my T1/E1 fails, does my entire link go down?
Q. What happens if one of my T1/E1 fails, does my entire link go down?Q. What happens if one of my T1/E1 fails, does my entire link go down?
Q. What happens if one of my T1/E1 fails, does my entire link go down?
A.
A.A.
A. No, with ML-PPP, if a T1/E1 goes down, the Ethernet traffic will continue to flow across the active links. When the
failed link comes back up, full bandwidth is automatically restored without manual intervention.
Q. Does the Inverse Mux use ATM
Q. Does the Inverse Mux use ATM Q. Does the Inverse Mux use ATM
Q. Does the Inverse Mux use ATM to multiplex the T1/E1 circuits?
to multiplex the T1/E1 circuits?to multiplex the T1/E1 circuits?
to multiplex the T1/E1 circuits?
A.
A.A.
A. No. The Inverse Mux uses Multi-Link PPP (ML-PPP which is 18% more efficient than ATM when using 256 byte
packets. Efficiency increases further with packet sizes of over 1,000 bytes which are typically used by streaming video.
Q.
Q. Q.
Q. Does the IpLink
Does the IpLinkDoes the IpLink
Does the IpLink™
™™
™
Inverse Mux support VLANs
Inverse Mux support VLANsInverse Mux support VLANs
Inverse Mux support VLANs?
??
?
A.
A.A.
A. Yes. The Inverse Mux can be configured to apply QoS based on VLAN tags as well as tag untagged VLAN traffic. It
can likewise transparently pass VLAN, Cisco ISL and MAC-in-MAC (PBB frames as well as MPLS tagged traffic.
