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Chapter 14
Managing the SCMP
Multiple ISG Routers with Two Cascaded SCE Platforms (NxISG – 2xSCE)
Figure 14-3
Figure 14-3
DBL
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:
•
•
•
OL-7827-12
illustrates a deployment using multiple ISG routers with two cascaded SCE platforms.
Multiple ISG Routers with Two Cascaded SCE Platforms
ETTH/
ETTB
P Node
IP/MPLS
core
PE Node
+ ISG
Billing
Portal
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.
PE Node
+ ISG
SCEs
Subcarrier
Address
database
mgmt
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
About SCMP
Internet
14-5
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