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Cisco PNNI Network Planning Guide for MGX and SES Products, Release 5
Part Number OL-3847-01 Rev. D0, April, 2004
Chapter 3 Address and Closed User Group Planning
Worksheets
Selecting a Default CUG Address
A default CUG address is a default address that is assigned to a switch to be used for CUG validation
when the connected CPE does not signal a calling party ATM address. The default CUG address does
not have to match any addresses or prefixes assigned on the switch. It is not used for PNNI routing. It is
simply a default address to which a CUG can be assigned.
When a default CUG address is configured, all calls originating and terminating at the switch are treated
as CUG calls, regardless of the ATM address. If the CPE does not signal an ATM address, CUG
validation uses the default CUG address and evaluates the call based on the CUG membership assigned
to the default CUG address. If multiple CUGs are assigned to the default CUG address, it is a good plan
to specify one CUG as a preferential CUG.
When planning a default CUG address using the CUG Configuration Worksheet, Table 3-6, remember
that there can only be one default CUG address per switch. If you want to assign more than one CUG to
the default CUG address, copy Table 3-6 for each CUG assignment and remember that the default CUG
address or prefix must be the same in all copies planned for the same switch.
Worksheets
This section provides the configuration worksheets that are described earlier in this chapter.
Table 3-4 is a worksheet that you can use to write down ATM address planning information that applies
to the switches in your WAN.
Table 3-5 is a worksheet that you can use to write down ATM address planning information that applies
to the ports on a single switch. To complete an address plan, complete one Nodal Address Worksheet for
the WAN and an individual Port Address Worksheet for each switch in the WAN.
Table 3-4 Nodal Address Worksheet
Node Name Address
Format
Lowest
PNNI
Level
Peer Group ID ATM Address Additional
PNNI Levels
SPVC
Prefix