1-4
Cisco IP Solution Center, 3.0: MPLS VPN Management User Guide, 3.0
OL-4344-01
Chapter1 About Cisco IP Solution Center
Overview of ISC
•VLAN ID Management: ISC allocates VLAN IDs per customer and per Ethernet Service deployed.
The service provider can track per Access Domain a particular allocated VLAN ID (per service or
per customer or per Access Domain).
ISC keeps track of the VLANs allocated and gives detailed usage information of the VLAN
allocated per service, per customer, or per Access Domain.
Access Domain: The Layer 2 Ethernet switching domain attached to a PE defines an access domain.
All the switches attached to the PE-POP belong to the access domain (as illustrated in Figure 1-3 on
page 1-5). This notion enables the network operator to tie multiple VLAN pools to a single Access
Domain, and also allows redundancy with dual PEs in a single Access Domain.
For illustration purpose, let’s assume that a Service Provider has a network such as the one
illustrated in Figure 1-2. A customer has two sites (Chicago and New York), and would like to get
an Ethernet Wire Service between the two sites.
Figure 1-2 Service Provider Network for VLAN ID Management
1. If the network operator has chosen the Auto-Pick VLAN ID option in the service policy (see the
“PE Interface Information” section on page 4-11), the network operator must assign an access
domain and a VLAN pool for a given PE-POP.
This automatically gives ISC the range of VLAN IDs that are attached to the access domain.
Figure 1-3 shows the access domain assigned, with PE-POP 1, CLE 1, and CLE 2 defined within the
access domain.
89997
Service Provider
network
IP Solution Center
Network Management
subnet
Service provider
MPLS core
Management CE
Management PE
Management VPN
PE
PE
CE 2
PE-POP 2
PE
PE-POP 1
CLE-1
New York
CE 2
Chicago
CLE-2