Defining Display Filters; Examples Of Display Filters - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Cisco Fabric Analyzer
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
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Defining Display Filters

Display filters limit the frames that can be displayed, but not what is captured (similar to any view
command). The filters to be displayed can be defined in multiple ways in the GUI application:
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Regardless of the definition, each filter must be saved and identified with a name.
Note This GUI-assisted feature is part of Ethereal and you can obtain more information from
http://www.wireshark.org.

Examples of Display Filters

Some examples of using display filters with the Fabric Analyzer local are provided in this section. The
brief option is used in all examples to restrict the size of the output. See
Example 58-2 Displays Only Fabric Login Server Traffic on VSAN 1
switch(config)# fcanalyzer local brief display-filter
(mdshdr.vsan==0x01)&&((fc.d_id==\"ff.ff.fe\"\|\|fc.s_id==\"ff.ff.fe\"))
Capturing on eth2
8.904145
8.918164
You can trace all frames to and from a particular N port device. For example, you can observe RSCNs
from the Fabric Controller and registration, and/or you can query requests to the name server. See
Example
The filter requires prior knowledge of the FC ID that is assigned to the N port. Issue the show flogi
Note
database interface command before running fcanalyzer to obtain the FC ID. In this example, the N port
FC ID is 79.03.00.
Cisco MDS 9000 Family CLI Configuration Guide
58-10
To view all FSPF frames, use this expression:
swils.opcode == HLO || swils.opcode == LSU || swils.opcode == LSA
To view all FLOGI frames, use this expression:
fcels.opcode == FLOGI
To view all FLOGI frames in VSAN 1, use this expression:
fcels.opcode == FLOGI && mdshdr.vsan == 2
To view all name server frames, use this expression:
dNS
Auto-definition
Manual definition
Assisted manual definition
Only manual definition in local capture
No assists
00.00.00 -> ff.ff.fe
ff.ff.fe -> 79.03.00
58-3.
FC ELS 1 0x28f8 0xffff
FC ELS 1 0x28f8 0x12c6 0xff ->
Chapter 58 Troubleshooting Your Fabric
Example 58-2.
0x3 -> 0xf FLOGI
0x0 ACC (FLOGI)
OL-18084-01, Cisco MDS NX-OS Release 4.x