User guide

E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
10-5
D
ETERMINING THE
ESRP M
ASTER
automatically relinquishes master status and remains in standby mode if a ping
keepalive fails three consecutive times.
To participate in ESRP ping tracking, all ESRP switches must run ExtremeWare version
6.0 or above.
To view the status of tracked devices, use the following command:
show esrp
ESRP E
LECTION
A
LGORITHMS
You configure the switch to use one of five different election algorithms to select the
ESRP master. Each algorithm considers the election factors in a different order of
precedence, as follows:
•
ports_track_priority_mac
— Active ports, tracking information, ESRP priority,
MAC address (Default)
•
track_ports_priority_mac
— Tracking information, active ports, ESRP priority,
MAC address
•
priority_ports_track_mac
— ESRP priority, active ports, tracking information,
MAC address
•
priority_track_ports_mac
— ESRP priority, tracking information, active ports,
MAC address
•
priority_mac_only
— ESRP priority, MAC address
All switches in the ESRP network must use the same election algorithm,
otherwise loss of connectivity, broadcast storms, or other unpredictable behavior
may occur.
Only the
ports_track_priority_mac
election algorithm is compatible with
ExtremeWare releases prior to version 6.0.
M
ASTER
S
WITCH
B
EHAVIOR
If a switch is master, it actively provides layer 3 routing services to other VLANs, and
layer 2 switching between all the ports of that VLAN. Additionally, the switch
exchanges ESRP packets with other switches that are in standby mode.