Dual Cisco Sce 8000 Topology (Cascade) - Cisco SCE 8000 Installation Manual

Dual Link: Receive-Only Topology
In this topology, a Cisco SCE 8000 is connected in receive-only mode to two full-duplex, 10 GBE links by using optical splitters
(see Figure 6).
As with the dual link, inline topology, this topology completely overcomes the problem of asymmetrical routing.
Figure 6 Dual Link: Receive-Only Topology
Subscriber 1
3/0/0
3/2/0
Subscriber 2
Note When implementing receive-only topologies with a switch, the switch must support the SPAN functionality that
includes separation between ingress and egress traffic and multiple SPAN ports destinations.

Dual Cisco SCE 8000 Topology (Cascade)

In this topology, two cascaded Cisco SCE 8000s are used. This topology allows a failover solution. If one Cisco SCE 8000 fails,
the redundant platform preserves the functionality that Cisco SCE 8000 provides (see
This topology allows control and monitoring functionality, where redundancy is required and inline connection is used. The
primary Cisco SCE 8000 processes the traffic of the two links, whereas the secondary Cisco SCE 8000 only bypasses the traffic
of its links to the primary Cisco SCE 8000 for processing, and then bypasses the processed traffic back to the link. The two
Cisco SCE 8000s also exchange keep-alive messages and subscriber state information.
If the primary Cisco SCE 8000 fails, the two Cisco SCE 8000s switch their roles, and failover is provided.
Figure 7 Two Cascaded Cisco SCE 8000 Platforms
Subscriber
3/0/0
3/2/0
Subscriber
3/2/0
3/0/0
8
Splitter
Network 1
3/1/0
3/3/0
Network 2
Splitter
Network
3/1/0
3/3/0
3/3/0
Network
3/1/0
Figure 7).