Device Management Commands; Buffer-Manage Share-Size - HP A8800 Series Fundamentals Command Reference

Device management commands

In this document, SPC cards refer to the cards with silkscreen staring with SPC, for example, SPC-GT48L,
SPE cards refer to the cards with silkscreen staring with SPE, for example, SPE- 1 020-E-II.
File names in this document comply with the following rules:
Path + file name (namely, a full file name): File on a specified path. A full file name consists of 1 to
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135 characters.
"File name" (namely, only a file name without a path): File on the current working path. The file
•
name without a path consists of 1 to 91 characters.

buffer-manage share-size

Syntax
buffer-manage { ingress | egress } slot slot-number share-size size-value
undo buffer-manage { ingress | egress } slot slot-number share-size
View
System view
Default level
3: Manage level
Parameters
ingress: Sets the receive buffer shared by all interfaces on the router.
egress: Sets the transmit buffer shared by all interfaces on the router.
slot slot-number: Specifies the slot number of a service card.
size-value: Sets the size in blocks of the shared receive buffer or transmit buffer, with a step of 512. The
size in blocks of the shared receive buffer ranges from 0 to 2048, and that of the shared transmit buffer
ranges from 0 to 7168.
Description
Use buffer-manage share-size to set the size in blocks of the receive or transmit buffer shared by all
interfaces on a service card.
Use undo buffer-manage share-size to restore the default.
By default, the size in blocks of the shared receive buffer is 1024, and that of the shared transmit buffer
is 4608.
You can change the shared buffer area depending on traffic patterns. If transient large traffic bursts occur
on some interfaces, you can expand the shared buffer to accommodate the bursts to prevent traffic loss.
If transient small traffic bursts often occur on the interfaces, you can decrease the shared buffer so that
each port can get more dedicated buffer memory.
NOTE:
You cannot set shared buffers for the SPE cards.
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