Specifications

Determining the ESRP Master
ExtremeWare XOS 11.0 Concepts Guide 237
ESRP Election Algorithms
You configure the switch to use one of 15 different election algorithms to select the ESRP master. ESRP
uses the default election policy for extended mode. If you have an ESRP domain operating in standard
mode, the domain ignores the sticky and weight algorithms.
To change the election algorithm, you must first disable the ESRP domain and then configure the new
election algorithm. If you attempt to change the election algorithm without disabling the domain first,
an error message appears.
To disable the ESRP domain, use the following command:
disable esrp {<esrpDomain>}
To modify the election algorithm, use the following command:
configure esrp <esrpDomain> election-policy [ports > track > priority | ports > track
> priority > mac | priority > mac | priority > ports > track > mac | priority > track
> ports > mac | sticky > ports > track > priority | sticky > ports > track > priority
> mac | sticky > ports > track > priority > mac > weight | sticky > priority > mac |
sticky > priority > ports > track > mac | sticky > priority > track > ports > mac |
sticky > track > ports > priority > | sticky > track > ports > priority > mac
Table 43 describes the ESRP election algorithms. Each algorithm considers the election factors in a
different order of precedence. The election algorithms that use sticky and weight are only available in
extended mode.
Table 43: ESRP election algorithms
Election Algorithm Description
ports > track > priority Specifies that this ESRP domain should consider election factors in the
following order: Active ports, tracking information, ESRP priority.
ports > track > priority > mac Specifies that this ESRP domain should consider election factors in the
following order: Active ports, tracking information, ESRP priority, MAC
address. This is the default election algorithm for standard mode.
priority > mac Specifies that this ESRP domain should consider election factors in the
following order: ESRP priority, MAC address.
priority > ports > track > mac Specifies that this ESRP domain should consider election factors in the
following order: ESRP priority, active ports, tracking information, MAC
address.
priority > track > ports > mac Specifies that this ESRP domain should consider election factors in the
following order: ESRP priority, tracking information, active ports, MAC
address.
sticky > ports > track > priority Specifies that this ESRP domain should consider election factors in the
following order: Stickiness, active ports, tracking information, ESRP
priority.
sticky > ports > track > priority > mac Specifies that this ESRP domain should consider election factors in the
following order: Stickiness, active ports, tracking information, ESRP
priority, MAC address.
sticky > ports > track > priority > mac >
weight
Specifies that this ESRP domain should consider election factors in the
following order: Stickiness, active ports, tracking information, ESRP
priority, MAC address, port weight. This is the default election algorithm
for extended mode.