Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 10 Cisco IGX 8400 Series IP Service
IP Service Provisioning
Network Description for Figure 10-17
Figure 10-16 provides an example of configuring the IGX as an MPLS label switch (ATM-LSRs) for
MPLS switching of IP packets through an ATM network. The figure also shows configuration for Cisco
routers for use as label edge routers (edge LSRs) at the edges of the network.
Figure 10-16 displays the configuration for the following components:
• Edge LSR-A
• Edge LSR-C (URM card installed in ATM-LSR-2 IGX chassis)
• ATM LSR-1 (IGX switch and controller)
• ATM LSR-2 (IGX switch with two installed URM cards acting as ATM-LSC 2 and Edge LSR-C)
The configuration of ATM LSR-3, ATM LSR-4, and ATM LSR-5, is not detailed in this guide. However,
it is similar to the sample configurations detailed for ATM LSR-1 and ATM LSR-2. The configuration
for Edge LSR-B is similar to Edge LSR-A and LSR-C.
Initial Setup of LVCs
The service template contains two classes of data:
• Connection Parameters
These parameters are necessary to establish a connection (that is, per LVC) and include entries such
as UPC actions, various bandwidth-related items, per LVC thresholds, and so on.
• CoS Configuration (UXM, UXM-E, and URM-LSC)
These data items are required to configure the associated CoS buffers (Qbins) that provide CoS
support.
Note MPLS CoS is not supported on the URM-LSR.
When a connection setup request is received from the VSI master in the LSC, the VSI slave (in the UXM,
for example) uses the service type identifier to index into a SCT database that contains extended
parameter settings for connections matching that index. The slave uses these values to complete the
connection setup and program the hardware.
Configuring an IGX ATM-LSR for MPLS
The ATM-LSR consists of two hardware components—the IGX switch (also called the label switch
slave) and a router configured as a label switch controller (LSC). The label switch controller can be
either an external Cisco router, such as the Cisco 7204, or the chassis-installed URM. LSC configuration
for either router option is essentially the same.
For information on configuring the Cisco IOS software running on the LSC for MPLS, see MPLS Label
Switch Controller and Enhancements 12.2(8)T.
Tip When configuring an ATM-LSR on an IGX with installed URM, use two terminal sessions—one to log
into the embedded UXM-E on the URM card to configure the label switch slave portion of the
ATM-LSR, and one to log into the embedded router on the URM card to configure the LSC portion of
the ATM-LSR.