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14-5
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
OL-7827-12
Chapter 14 Managing the SCMP
About SCMP
Multiple ISG Routers with Two Cascaded SCE Platforms (NxISG – 2xSCE)
Figure 14-3
illustrates a deployment using multiple ISG routers with two cascaded SCE platforms.
Figure 14-3
Multiple ISG Routers with Two Cascaded SCE Platforms
Many SPs require an edge platform with MPLS functionality to support L2 and L3 VPN services for
business customers, with the possibility of running subscriber management functions for residential and
business subscribers terminating on the same platform. If advanced services requiring deep packet
inspection are offered, we recommend locating the SCE platforms centrally, just before traffic requiring
such services exits the SP network, since not all traffic needs to be processed by SCE platforms. Please
note the following:
•
When cascaded SCE platforms are connected to one or more ISG devices, only the active SCE
platform maintains a connection to the ISG devices.
•
You can configure the cascaded SCE platforms to receive session info from the SCMP peer on
session creation or pull the session info when the subscribers traffic traverses the SCE platform.
•
An ISG device cannot push sessions to two SCE platforms at the same time.
210266
Internet
IP/MPLS
core
P Node
DBL
ETTH/
ETTB
PE Node
+ ISG
PE Node
+ ISG
SCEs
Billing
Portal
Subcarrier
database
Address
mgmt