Figure 312 t – Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) User Manual

Page 1075

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Brocade 6910 Ethernet Access Switch Configuration Guide

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Connectivity Fault Management

When using the command line or web interface, the source MEP used by to send a link trace
message is chosen by the CFM protocol. However, when using SNMP, the source MEP can be
specified by the user.

Parameters controlling the link trace cache, including operational state, entry hold time, and
maximum size can be configured on the Configure Global page (see

"Configuring Global

Settings for CFM"

).

Parameters
These parameters are displayed:

MD Index – Domain index. (Range: 1-65535)

MA Index – MA identifier. (Range: 1-2147483647)

Source MEP ID – The identifier of a source MEP that will send the link trace message.
(Range: 1-8191)

Target

MEP ID – The identifier of a remote MEP that is the target of a link trace message.
(Range: 1-8191)

MAC Address – MAC address of a remote MEP that is the target of a link trace message.
This address can be entered in either of the following formats: xx-xx-xx-xx-xx-xx or
xxxxxxxxxxxx

TTL – The time to live of the link trace message. (Range: 0-255 hops)

Interface
To transmit link trace messages:

1. Click Administration, CFM.

2. Select Transmit Link Trace from the Step list.

3. Select an entry from MD Index and MA Index.

4. Specify the source MEP, the target MEP using either its MEP identifier or MAC address, and set

the maximum number of hops allowed in the TTL field.

5. Click Apply.

6. Check the results in the Link Trace cache (see

“Displaying the Link Trace Cache”

on

page 1033).

FIGURE 312

Transmitting Link Trace Messages

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