Expand Configuration and Management Manual (H06.21+, J06.10+)

Expand Modifiers
Expand Configuration and Management Manual — 529522-013
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PATHBLOCKBYTES n
PATHBLOCKBYTES n
Default: 0
Units: Bytes
Range: 0 or 1024 through 9180 for Expand-over-ATM and Expand-over-IP lines
0 or 1024 through 4095 for all other Expand line types
This path modifier is applicable to all Expand line types. This modifier specifies the
maximum size, in bytes, of a multipacket frame. You should read the description of the
multipacket frame feature in Section 17, Subsystem Description, before using this
modifier.
The value of n must be larger than the result of this equation:
n > framesize * 4
where framesize is the configured frame size, in words, as specified by the
FRAMESIZE modifier. If n is not greater than the result of this equation, the
PATHBLOCKBYTES modifier will be set to zero, the multipacket frame feature will be
permanently disabled, and an operator message will be logged.
If both the PATHBLOCKBYTES and PATHPACKETBYTES modifiers are enabled, the
PATHBLOCKBYTES modifier value must be greater than or equal to the
PATHPACKETBYTES modifier value. If the PATHBLOCKBYTES modifier value is less
than the PATHPACKETBYTES modifier value, the PATHBLOCKBYTES modifier value
is automatically changed to the PATHPACKETBYTES modifier value.
A value of 0 (the default) specifies that the multipacket frame feature will be disabled.
A value of 0 is recommended for Expand-over-ATM lines.
PATHPACKETBYTES n
Default: 1024
Units: Bytes
Range: 0 or 1024 through 9180 for Expand-over-ATM and Expand-over-IP lines
0 or 1024 through 4095 for all other Exp
and line types
This path modifier is applicable to all Expand line types. This modifier specifies the
maximum size, in bytes, of a variable packet. You should read the description of the
variable packet size feature in Section 17, Subsystem Description, before using this
modifier.
The variable packet size feature cannot be used if the FRAMESIZE modifier is 517 or
more words. This feature does not provide any benefit on paths configured with the
L4EXTPACKETS_OFF modifier, which specifies that the extended 64-byte packet
header format not be used. Nonextended frames are not fragmentable and therefore
must use the network-wide FRAMESIZE modifier value.
The value of n must be larger than the result of this equation:
n > framesize * 4