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Pdu-rx-limit, X-limit, Pdu-rx-limit, pr – Brocade Network OS Command Reference v4.1.0 User Manual

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Network OS Command Reference

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pdu-rx-limit

2

pdu-rx-limit

Sets the number of PDU packets received on an ELD-enabled port before detecting and breaking a
loop.

Synopsis

pdu-rx-limit limit

no pdu-rx-limit limit

Operands

limit

The number of PDU packets. The valid range is 1 through 5.

Defaults

The default is 1.

Command Modes

ELD configuration mode

Description

Use this command to determine how many PDU packets are to be received before a loop is
assumed to exist and ELD disables a port to break the loop. This command sets the same value
for every RBridge in the Brocade VCS Fabric cluster.

Use this command with the hello-interval command to determine the time taken to detect a loop.
The time taken to detect a loop is the product of the pdu-rx-limit and the hello interval.
The Brocade VCS Fabric cluster in the loop with the lowest pdu-rx-limit is the cluster where the loop
gets broken, assuming that the hello limit is correctly set to the same value on all RBridges.

Usage Guidelines

This command applies only in Brocade VCS Fabric mode.

This functionality detects Layer 2 loops only.

Enter no pdu-rx-limit to reset the limit to its default value.

Examples

To set the limit on the number of PDU packets received to 4:

switch(config)# protocol edge-loop-detection

switch(config-eld)# pdu-rx-limit 4

See Also

edge-loop-detection vlan, edge-loop-detection port-priority, hello-interval,
protocol edge-loop-detection, show edge-loop-detection globals