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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
Planning Address Configuration Settings
The default PNNI level for Cisco MGX and SES switch products is 56, which is the midpoint of the
recommended values. If this is the lowest level that you expect to need, you can accept the default. If
you anticipate needing lower levels in the future, you should select the lowest level that you think you
will need now, and enter the level number in the Nodal Address Worksheet, Table 3-4, which appears at
the end of this chapter. If you are planning to create higher PNNI levels, you can also note these in the
worksheet.
Note If your ATM network connects to a public network, or if you want to conform to public network ATM
address rules for future expansion, you cannot create more than one peer group at PNNI levels 1 through
8. This is because the first 8 bits (byte 1) are reserved for the AFI and must be set to a fixed value. Also,
if the address format you choose is DCC AESA or ICD AESA, you can create only one peer group for
each DCC or ICD.
Table 3-3 Recommended PNNI Level Values
Level Peer Group ID Portion of ATM Address
Peer Group ID
Length
(Bytes)
8 11 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 1
16 11 22 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 2
24 11 22 33 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 3
32 11 22 33 44 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 4
40 11 22 33 44 55 xx xx xx xx xx xx xx xx xx xx xx xx xx xx xx 5
48 11 22 33 44 55 66 xx xx xx xx xx xx xx xx xx xx xx xx xx xx 6
56 11 22 33 44 55 66 77 xx xx xx xx xx xx xx xx xx xx xx xx xx 7
64 11 22 33 44 55 66 77 88 xx xx xx xx xx xx xx xx xx xx xx xx 8
72 11 22 33 44 55 66 77 88 99 xx xx xx xx xx xx xx xx xx xx xx 9
80 11 22 33 44 55 66 77 88 99 AA xx xx xx xx xx xx xx xx xx xx 10
88 11 22 33 44 55 66 77 88 99 AA BB xx xx xx xx xx xx xx xx xx 11
96 11 22 33 44 55 66 77 88 99 AA BB CC xx xx xx xx xx xx xx xx 12
104 11 22 33 44 55 66 77 88 99 AA BB CC DD xx xx xx xx xx xx xx 13