Allied Telesis SwitchBlade x3100 Series Manual page 450

Introduction
TABLE 4-18
Step Command
SHOW the status of the EPSR domain.
show epsr a0
8
--- EPSR Domain Information ---
EPSR Domain Name...................... allied
EPSR Domain Node Type................. Transit
EPSR Domain State..................... LINKS-UP
MAC Address of Master Node............ 00:0C:25:1F:80:09
EPSR Domain Status.................... Enabled
Control Vlan.......................... 3501
Enhanced Recovery..................... ON
Ring Interface # 1.................... ETH:[8.0]
Physical State of Ring Interface # 1.. UP
Ring Interface # 1 Type............... UPSTREAM
Ring Interface # 1 State.............. PHYSICALLY FORWARDING
Ring Interface # 1 Priority........... 0
Ring Interface # 1 Priority Rank...... 0
Ring Interface # 2.................... ETH:[8.2]
Physical State of Ring Interface # 2.. UP
Ring Interface # 2 Type............... DOWNSTREAM
Ring Interface # 2 State.............. PHYSICALLY FORWARDING
Ring Interface # 2 Priority........... 0
Ring Interface # 2 Priority Rank...... 0
Data Vlans............................ 3502
4.6.10 SuperLoop Prevention
With interconnected topologies, it is possible to have a condition called a SuperLoop, if all of the following
conditions exist.
The network has two or more EPSR domains.
•
The protected (data) VLAN overlaps two or more EPSR domains.
•
The EPSR domains and the overlapping protected VLANs share a common link.
•
4-130
Software Reference for SwitchBlade x3100 Series Switches (Layer Two Switching)
Configuration Procedure for EPSR - Configure a Transit Node
SuperLoop Prevention
Description/Notes