ESRP Election Algorithms

The following table 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 1. 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. NOTE: 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 > weight > track > priority > mac	Specifies that this ESRP domain should consider election factors in the following order: stickiness, active ports, port weight, tracking information, ESRP priority, MAC address. This is the default election algorithm for extended mode.
sticky > priority > ports > track > mac	Specifies that this ESRP domain should consider election factors in the following order: stickiness, ESRP priority, active ports, tracking information, MAC address.
sticky > priority > track > ports > mac	Specifies that this ESRP domain should consider election factors in the following order: stickiness, ESRP priority, tracking information, active ports, MAC address.
sticky > priority > mac	Specifies that this ESRP domain should consider election factors in the following order: stickiness, ESRP priority, MAC address.
sticky > track > ports > priority	Specifies that this ESRP domain should consider election factors in the following order: stickiness, tracking information, active ports, ESRP priority.
sticky > track > ports > priority > mac	Specifies that this ESRP domain should consider election factors in the following order: stickiness, tracking information, active ports, ESRP priority, MAC address.
track > ports > priority	Specifies that this ESRP domain should consider election factors in the following order: tracking information, active ports, ESRP priority.
track > ports > priority > mac	Specifies that this ESRP domain should consider election factors in the following order: tracking information, active ports, ESRP priority, MAC address.

Caution

All switches in the ESRP network must use the same election algorithm; otherwise, loss of connectivity, broadcast storms, or other unpredictable behavior may occur.

Note

If you have a network that contains a combination of switches running ExtremeXOS software and ExtremeWare, only the ports > track > priority >mac election algorithm is compatible with ExtremeWare releases before version 6.0.