ESRP Cautions
ExtremeWare XOS 11.3 Concepts Guide
483
ESRP Cautions
This section describes important details to be aware of when configuring ESRP.
Configuring ESRP and IP Multinetting
When configuring ESRP and IP multinetting on the same switch, the same set of IP addresses must be
configured for all involved VLANs.
ESRP and STP
A switch running ESRP should not simultaneously participate in STP for the same VLAN(s). Other
switches in the VLAN being protected by ESRP may run STP; the switch running ESRP forwards, but
does not filter, STP BPDUs. Therefore, you can combine ESRP and STP on a network and a VLAN, but
you must do so on separate devices. You should be careful to maintain ESRP connectivity between
ESRP master and slave switches when you design a network that uses ESRP and STP.
ESRP and VRRP
Do not configure ESRP and VRRP on the same VLAN or port. This configuration is not allowed or
supported.
ESRP Groups and Host Attach
ESRP domains that share ESRP HA ports must be members of different ESRP groups.
Port Configurations and ESRP
The following ports cannot be part of a VLAN that participates in an ESRP domain:
â—Ź A mirroring target port.
â—Ź A software-controlled redundant port.
â—Ź A Netlogin port.
In addition, the following ESRP ports cannot be a mirroring, software-controlled redundant port, or
Netlogin port:
â—Ź Host Attach port.
● Don’t-count port (this port has a port weight of zero).
â—Ź Restart port.
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