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Cisco SCE 8000 10GBE Software Configuration Guide
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Chapter 13 Managing the SCMP
About SCMP
•
You can configure the cascaded Cisco SCE platforms to receive session info from the SCMP peer
on session creation or pull the session info when the subscribers traffic traverses the Cisco SCE
platform.
•
An ISG device cannot push sessions to two Cisco SCE platforms at the same time.
Multiple ISG Routers with Multiple Cisco SCE Platforms via Load Balancing (NxISG – MxCisco SCE)
illustrates a deployment using multiple ISG routers with multiple Cisco SCE platforms via
load balancing. This is the scenario required for a MGSCP deployment.
Figure 13-4
Multiple ISG Routers with Multiple Cisco SCE Platforms via Load Balancing
This scenario includes several Cisco SCE platforms connected to a Cisco 7600 router. For efficient
control of subscriber flows, the same Cisco SCE platform must process both directions of each
subscriber flow, since the Cisco SCE platform keeps the subscriber context. The Cisco 7600 router to
which the Cisco SCE platforms are connected acts as a dispatching element, distributing subscriber
flows between Cisco SCE platforms and guaranteeing that all flows of a specific subscriber will pass
through the same Cisco SCE platform.
This scenario assumes that one (or sometimes more) of the devices in the cluster is redundant.
Please note the following:
•
An ISG device cannot push sessions to two Cisco SCE platforms at the same time.
210267
PE-1
(GSR)
OC-48
POS
OC-48
POS
BB-2
(GSR)
EX-1
(GSR)
OC-48
POS
OC-192
BB-1
(GSR)
Mega Pop
BRAS
SBC-IS Mini Pop
DB-1
(GSR/7500)
DB-2
(GSR/7500)
DIST-1
(6500)
DIST-2
(6500)
PE-1
(GSR)
DED-1
(GSR/7500)
SCE
BRAS
SBC-IS Mini Pop
DB-1
(GSR/7500)
DB-2
(GSR/7500)
DIST-1
(6500)
DIST-2
(6500)
PE-1
(GSR)
DED-1
(GSR/7500)
SCE
SBC IS core network
Core-1
(GSR)
Core-1
(GSR)
Core-3
(GSR)
Core-2(GSR)
OC-192
OC-192
BB-1
(GSR)
BB-2
(GSR)