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Configuring capture buffer, Specify packet size to capture, Specify filter(s) – Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual

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Brocade Virtual ADX Server Load Balancing Guide

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Using the debug filter command

B

Configuring Capture Buffer

You have to specify the size of the capture buffer in kilobytes. To set the buffer size do the following:

Virtual ADX(debug-filter)# buffer-size 1024

Syntax: buffer-size kilobytes

To display the buffer size do the following:

Virtual ADX(debug-filter)# buffer-size 1024

Syntax: buffer-size kilobytes

Virtual ADX(debug-filter)# show buffer-size

Capture buffer size: 1048567 bytes

Specify packet size to capture

You can specify the number of bytes from a captured packet that are getting stored in the capture
buffer. It is also possible to store the entire packet.

To set the amount of bytes to store do the following:

Virtual ADX(debug-filter)# packet-size 128

Syntax: packet-size bytes | whole

The whole variable specifies that the entire packet needs to be stored in the capture buffer.

To show the currently configured packet size:

Virtual ADX(debug-filter)# show packet-size

Max bytes stored from a filtered pkt: 128

Specify filter(s)

You specify the packets to store in the capture buffer by configuring one or more filter IDs. A filter ID
consists of a set of filters that specify the attributes of packets to be stored in the capture buffer.
You can configure up to 16 filter IDs.

Within a filter ID, you can specify filters for Layer 2 - 4 information in a packet. In addition, you can
set up filters to capture packets that contain a specified pattern within the packet.

By default, a filter ID is configured to match any packet. Within a filter ID, all the filters must match
a received packet in order for the packet to be captured. The filters not explicitly configured have
"don't care" values, which are ignored during the matching process.

To specify the filter with ID 1:

Virtual ADX(debug-filter)#specify 1

Virtual ADX(debug-filter-spec-1)#

Syntax: specify filter-id

You are able to specify filter settings at the filter ID configuration level. It is possible as well to
display the current settings.