Configuring EAPS Shared Ports
ExtremeWare XOS 11.3 Concepts Guide
411
Configuring EAPS Shared Ports
NOTE
You must have a core or an advanced core license to use the EAPS shared port feature.
When multiple EAPS rings share a physical link, this link is referred to as the common link. Each node
on either end of this common link should be configured with an EAPS shared port instance. You must
configure one node of the common link as the controller and the node on the other end as the partner.
Each common link in the EAPS network must have a unique link ID. The controller and partner shared
ports belonging to the same common link must have matching link IDs. These controller and partner
nodes with matching link IDs must be directly connected to each other. No other instance in the
network should have that link ID. During normal operation, both the controller and the partner send
segment health check messages on their EAPS domain every second.
In the situation described above, if there is no EAPS shared ports configuration, and the common link
fails, this might result in a superloop.
Tag status Tagged status of the control VLAN:
• Tagged—The control VLAN has this port assigned to it, and the
port is tagged in the VLAN.
• Untagged—The control VLAN has this port assigned to it, but the
port is untagged in the control VLAN.
• Undetermined—Either a VLAN has not been added as the control
VLAN to this EAPS domain or this port has not been added to the
control VLAN.
Hello Timer interval The configured value of the timer in seconds, specifying the time that
the master node waits between transmissions of health check packets.
Fail Timer interval The configured value of the timer in seconds, specifying the time that
the master node waits before the failtimer expires.
Failtimer expiry action
1
Displays the action taken when the failtimer expires:
• Send-alert—Sends a critical message to the syslog when the
failtimer expires.
• Open-secondary-port—Opens the secondary port when the failtimer
expires.
Preforwarding Timer interval
2
The configured value of the timer. This value is set internally by the
EAPS software.
Last update Indicates the last time a hello packet is received from the master
node.
EAPS Domain has … Controller Vlans Lists the assigned name and ID of the control VLAN.
EAPS Domain has … Protected Vlans Lists the assigned names and VLAN IDs of all the protected VLANs
configured on this EAPS domain.
Number of Protected Vlans The count of protected VLANs configured on this EAPS domain.
1. This field applies only to master nodes; it does not display for a transit mode.
2. These fields apply only to transit nodes; they are not displayed for a master node.
Table 57: show eaps display fields (Continued)
Field Description
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