McDATA ULTRANETTM EDGE STORAGE ROUTER 3000 - Manual (Page 157)

7
Configuring an E_Port Extension over an ATM WAN 7-19
Configuring a 1x1 ATM Wide Area Network
13. Configure the PVC parameters for Node20 by entering the
appropriate information in the following fields:
NOTE: If POS (Packet over SONET) is enabled, it is not necessary to enter
values in the Virtual Path ID (VPI) and Virtual Channel ID (VCI) fields, they
are not used for this protocol.
a. Enter the Virtual Path ID (VPI). The value that can be entered
in this field is determined by the Active VCI Bits value.
Initially the Active VCI Bits value is set to 11, only 0 and 1 are
valid enabled VPI values. The default setting is 0.
b. Enter the Virtual Channel ID (VCI). The value that can be
entered in this field is determined by the Active VCI Bits
value. Initially the Acitve VCI Bits value is set to 11, valid
enabled VCI values are in the range of 0 to 2047. The values of
3 and 4 are reserved for Operations and Management (OAM)
traffic. A value must specified, there is no default value.
c. Check the box to Enable POS (Packet over SONET) for the
ATM interface.
This enables the direct encapsulation of packets via SONET
framing. POS uses PPP to encapsulate the data. POS is
disabled by default.
Active VCI Bits Value Valid Enabled VPI Values
12 Zero
11 Zero and 1
10 Zero through 3
4 Zero through 255
Active VCI Bits Value Valid Enabled VCI Values
12 Zero through 4095
11 Zero through 2047
10 Zero through 1023
4 Zero through 15