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Cisco WAN Modeling Tools Guide
OL-10426-01, Rev. A0
Chapter4 Configuration Tables and Fields
Feeders
Modeling Explicit Feeders
To allow the NMT to model explicit feeders, enter the following information about the feeder site into
the Site table:
• link connecting the hub and feeder in the Link table
• connection interfaces in the Traffic tables (as if the node were not a feeder).
For explicit feeders, connection endpoints are the feeder nodes.
IGX and IPX nodes can be modeled as either hub or feeder nodes. The MGX 8820 can only be modeled
as a feeder. Beginning with NMT 9.2, the MGX 8820 can be an explicit feeder as well as an implicit
feeder.
The MGX 8850 is also modeled in NMT 9.2. As a feeder node, the MGX connects to the BPX. If
modeled as a feeder, The MGX 8850 node must be explicit.
MGX 8220 Feeders:
Port to Multiport
Bursty Traffic table
Fdr I/D fields (Feeder identification fields): ID values
must be assigned.
ID values can be
• Slot.Port for AUSM and CESM cards (e.g., 5.3); this
format can be used also for FRSM cards to specify
physical port (line) without specifying logical port.
• Slot.Line.Port for FRSM card (e.g., 5.2.6).
• Zero, indicating no unique port constraint.
By assigning IDs to the ports of the MGX 8220 service
module cards, you can put the connection on a particular
port.
Feeder IDs can also control port-to-multiport connections.
MGX 8220 Feeders:
Multiple Feeders at a
Site
Bursty Traffic table
Hub ID field
• All connections associated with a specific MGX
8220 should have the same hub ID throughout the
Bursty Traffic table.
• It is not necessary to use the HUB ID field for the
site at the other end of the connection.
• Hub ID values can be
— Slot.Port (e.g., 12.2)
— Zero, indicating no unique port constraint
You need to configure a site with multiple MGX 8220 feeders
only if you require connections between the feeders or if you
need to associate specific connections with specific feeders
(e.g., if the feeders are at different locations).
Assign hub IDs to identify the port of the BNI/BXM card on
the BPX switch that connects to the specific MGX 8220 edge
concentrator.
Table 4-19 Tiered Network Configurations with Implicit Feeders (continued)
Topic Required Settings Comments