Configure Forwarding Hash-Algorithm - Extreme Networks ExtremeWare XOS Command Reference Manual
Software version 11.5
Hide thumbs
Also See for ExtremeWare XOS:
- Command reference manual (1712 pages) ,
- Manual (698 pages) ,
- Manual (256 pages)
Table of Contents
Advertisement
ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
configure forwarding hash-algorithm
configure forwarding hash-algorithm [crc16 | crc32]
Description
Modifies hardware table utilization by configuring the hash algorithm.
Syntax Description
crc16
crc32
Default
In ExtremeWare XOS 11.5, the default hash algorithm is crc32
In ExtremeWare XOS 11.4 and earlier, the default hash algorithm is crc16.
Usage Guidelines
NOTE
Modify the hardware table hash algorithm only with the guidance of Extreme Networks technical personnel.
The switch uses a hash algorithm to decide where to store the addresses in the hardware table. The
standard, default hash algorithm works well for most systems; however, for some addresses with
certain patterns, the hardware may attempt to store address information in the same section of the
hardware.
If you are running ExtremeWare XOS 11.4 or earlier and experience a full hardware table that affects
Layer 2, IP local host, and IP multicast forwarding, you see messages similar to the following in the log:
<Info:HAL.IPv4Adj.Info> : adj 136.159.188.109: IP add error is Table full for new or
newly resolved ARP, egress valid
<Info:HAL.IPv4Adj.Info> : adj 136.159.188.109: returned -17 for L3 table bucket 181
<Warn:HAL.IPv4Mc.Warning> : Could not allocate a hardware S,G,V entry
(889f4648,effffffa,70) - hardware table resource exceeded (rv=-17).
If you are running ExtremeWare XOS 11.5 and experience a full hardware table that affects Layer 2, IP
local host, and IP multicast forwarding, you see messages similar to the following in the log:
HAL.IPv4Adj.L3TblFull> MSM-A: IPv4 unicast entry not added.
Card.IPv4Adj.Warning> Slot 4: IPv4 unicast entry not added.
HAL.IPv4Mc.GrpTblFullEnt> MSM-A: IPv4 multicast entry (10.0.0.1,224.1.1.1,vlan 1) not
added.
Hardware Group Table full.
Card.IPv4Mc.Warning> Slot-4: IPv4 multicast entry not added.
ExtremeWare XOS 11.5 Command Reference Guide
Specifies the CRC16 hash algorithm. This is the default setting.
Specifies the CRC32 hash algorithm.
configure forwarding hash-algorithm
Hardware L3 Table full.
Hardware L3 Table full.
Hardware L3 Table full.
1957
Advertisement
Table of Contents
