Remote Span - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual
Cisco mds 9000 family cli configuration guide - release 4.x (ol-18084-01, february 2009)
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Chapter 51
Monitoring Network Traffic Using SPAN
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
Note
Example 51-9 Displays an SD Port Interface with Encapsulation Enabled
switch# show int fc9/32
fc9/32 is up
Remote SPAN
Remote SPAN is not supported on the Cisco Fabric Switch for HP c-Class BladeSystem and the Cisco
Note
Fabric Switch for IBM BladeSystem.
The Remote SPAN (RSPAN) feature enables you to remotely monitor traffic for one or more SPAN
sources distributed in one or more source switches in a Fibre Channel fabric. The SPAN destination (SD)
port is used for remote monitoring in a destination switch. A destination switch is usually different from
the source switch(es) but is attached to the same Fibre Channel fabric. You can replicate and monitor
traffic in any remote Cisco MDS 9000 Family switch or director, just as you would monitor traffic in a
Cisco MDS source switch.
The RSPAN feature is nonintrusive and does not affect network traffic switching for those SPAN source
ports. Traffic captured on the remote switch is tunneled across a Fibre Channel fabric which has trunking
enabled on all switches in the path from the source switch to the destination switch. The Fibre Channel
tunnel is structured using trunked ISL (TE) ports. In addition to TE ports, the RSPAN feature uses two
other interface types (see
•
•
OL-18084-01, Cisco MDS NX-OS Release 4.x
The default value for all the SPAN sessions is 15. The span max-queued-packets command can
be issued only if the sessions are inactive.
Hardware is Fibre Channel
Port WWN is 22:20:00:05:30:00:49:5e
Admin port mode is SD
Port mode is SD
Port vsan is 1
Speed is 1 Gbps
Receive Buffer Size is 2112
Encapsulation is eisl
Beacon is turned off
5 minutes input rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
5 minutes output rate 0 bits/sec, 0 bytes/sec, 0 frames/sec
0 frames input, 0 bytes, 0 discards
0 CRC,
0 unknown class
0 too long, 0 too short
0 frames output, 0 bytes, 0 discards
0 input OLS, 0 LRR, 0 NOS, 0 loop inits
0 output OLS, 0 LRR, 0 NOS, 0 loop inits
Figure
SD ports—A passive port from which remote SPAN traffic can be obtained by the FC analyzer.
ST ports—A SPAN tunnel (ST) port is an entry point port in the source switch for the RSPAN Fibre
Channel tunnel. ST ports are special RSPAN ports and cannot be used for normal Fibre Channel
traffic.
<---------------- Displays the enabled encapsulation status
51-8):
Cisco MDS 9000 Family CLI Configuration Guide
Remote SPAN
51-17
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