Extreme Networks ExtremeWare XOS 11.0, Command Reference Manual

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configure sharing address-based
ExtremeWare XOS 11.0 Command Reference Guide 191
configure sharing address-based
configure sharing address-based [L2 | L2_L3 | L2_L3_L4 |L2_L3_CHK_SUM |
L2_L3_L4_CHK_SUM]
Description
Configures the part of the packet examined by the switch when selecting the egress port for
transmitting load-sharing data.
Syntax Description
Default
The default setting is L2.
Usage Guidelines
This feature is available using the address-based load-sharing algorithm only. The address-based
load-sharing algorithm uses addressing information to determine which physical port in the
load-sharing group to use for forwarding traffic out of the switch. Addressing information is based on
the packet protocol, as follows:
• IP packets—Uses the source and destination MAC and IP address, and the TCP port number.
• All other packets—Uses the source and destination MAC address.
This command specifies the part of the packet header that the switch examines to select the egress port
for address-based load-sharing trunks. The address-based load-sharing setting is global and applies to
all load-sharing trunks that are address-based. You change this setting by issuing the command again
with a different option. (Because the algorithms L2_L3__CHK_SUM and L2_L3_L4_CHK_SUM use the
IP check sum as part of the decision for the egress port selection, these algorithms do not guarantee the
packet sequencing between the clients.)
To verify your configuration, use the
show ports sharing
command.
This is a global setting and applies to all load-sharing trunks that are address-based.
If you do not explicitly select an algorithm, the port-based scheme is used. However, the address-based
algorithm has a more even distribution and is the recommended choice.
L2 Indicates that the switch should examine the MAC source and destination
address.
L2_L3 Indicates that the switch should examine the MAC source and destination
address plus the IP source and destination address.
L2_L3_L4 Indicates that the switch should examine the MAC source and destination
address, the IP source and destination, plus the TCP source and destination
port number.
L2_L3_CHK_SUM Indicates that the switch should examine the MAC source and destination
address, the IP source and destination address, plus the IP check sum.
L2_L3_L4_CHK_SUM Indicates that the switch should examine the MAC source and destination
address, the IP source and destination, the TCP source and destination port
number, plus the IP check sum.