Cisco 9134 - MDS Multilayer Fabric Switch Troubleshooting Manual page 542

Using Cisco Network Management Products
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
The Ethereal application allows remote access to Fibre Channel control traffic and does not require a
Fibre Channel connection on the remote workstation.
The Cisco Fabric Analyzer lets you capture and decode Fibre Channel traffic remotely over Ethernet. It
captures Fibre Channel traffic, encapsulates it in TCP/IP, and transports it over an Ethernet network to
the remote client. The remote client then deencapsulates and fully decodes the Fibre Channel frames.
This capability provides flexibility for troubleshooting problems in remote locations.
The Cisco Fabric Analyzer captures and analyzes control traffic coming to the Supervisor Card. This tool
is much more effective than the debug facility for packet trace and traffic analysis, because it is not very
CPU intensive and it provides a graphic interface for easy analysis and decoding of the captured traffic.
switch# config terminal
switch(config)# fcanalyzer local brief
Capturing on eth2
0.000000
0.000089
1.991615
1.992024
fcanalyer example of fully decoded frame.
switch2(config)# fcanalyzer local
Capturing on eth2
Frame 1 (96 bytes on wire, 96 bytes captured)
Arrival Time Jan 13, 2003 135038.787671000
Time delta from previous packet 0.000000000 seconds
Time relative to first packet 0.000000000 seconds
Frame Number 1
Packet Length 96 bytes
Capture Length 96 bytes
Ethernet II, Src 00000000000a, Dst 00000000ee00
Destination 00000000ee00 (00000000ee00)
Source 00000000000a (00000000000a)
Type Vegas FC Frame Transport (0xfcfc)
MDS Header(SOFf/EOFn)
MDS Header
MDS Trailer
Fibre Channel
R_CTL 0x02
Dest Addr ff.fc.7e
CS_CTL 0x00
Src Addr ff.fc.7f
Type SW_ILS (0x22)
F_CTL 0x290000 (Exchange Originator, Seq Initiator, Exchg First, Seq Last,
CS_CTL, Transfer Seq Initiative, Last Data Frame - No Info, ABTS - Abort/MS, )
SEQ_ID 0x11
DF_CTL 0x00
SEQ_CNT 0
OX_ID 0x5a06
RX_ID 0x0000
Parameter 0x00000000
SW_ILS
Cmd Code SW_RSCN (0x1b)
0010 .... = Event Type Port is offline (2)
.... 0000 = Address Format Port Addr Format (0)
Affected Port ID 7f.00.01
Detection Function Fabric Detected (0x00000001)
Num Entries 1
Cisco MDS 9000 Family Troubleshooting Guide, Release 3.x
B-26
ff.ff.fd -> ff.ff.fd
ff.ff.fd -> ff.ff.fd
ff.ff.fd -> ff.ff.fd
ff.ff.fd -> ff.ff.fd
Packet Len 66
.... 0000 0001 11.. = Dst Index 0x0007
.... ..00 1111 1111 = Src Index 0x00ff
.... 0000 0000 0001 = VSAN 1
EOF EOFn (3)
Appendix B
SW_ILS 1 0x59b7 0xffff
FC 1 0x59b7 0x59c9 0xff ->
SW_ILS 1 0x59ca 0xffff 0xff ->
FC 1 0x59ca 0x59b8
Troubleshooting Tools and Methodology
0x7 -> 0xf HLO
0x0 Link Ctl, ACK1
0x0 HLO
0x7 -> 0xf Link Ctl, ACK1
OL-9285-05