
Configuring ATM Services
A-18
117374-B Rev. 00
ATM Virtual Channel Link Parameters
ATM virtual channel link parameters define PVCs in a PVC service record.
Parameter: MTU
Path: Configuration Manager > Protocols > ATM > Service Records
Default: 4608
Options: 0 to 9188
Function: Specifies the MTU, in bytes, that this service record can send. The MTU size is
typically determined by the driver. However, this parameter allows you to
override the driver default to accommodate connection to devices that require
different MTU sizes.
Instructions: Accept the default or enter an MTU size for this service record.
MIB Object ID: 1.3.6.1.4.1.18.3.4.23.1.2.1.12
Note:
Some ATM devices do not negotiate MTU size. When connecting to
such a device, Bay Networks recommends that you specify an MTU size of
9188 octets for full compatibility with RFC 1577.
Note:
ATM does not allow duplicate VPI/VCI pairs on the same physical
interface. However, duplicate VPI/VCI pairs can exist on different physical
interfaces.
Parameter: VPI Number
Path: Configuration Manager > Protocols > ATM > Service Records > PVC > Add
Default: None
Options: 0 to 255
Function: Identifies the virtual path of the PVC. The VPI is part of the cell header. The
header can contain a maximum of 8 VPI bits for a UNI connection. This bit
range allows for path identifiers from 0 to 255.
Instructions: Enter a value from 0 to 255.
MIB Object ID: 1.3.6.1.4.1.18.3.4.23.1.5.1.3
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