ESRP Election Algorithms describes the ESRP (Extreme Standby Router Protocol) 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.
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.
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