Suspending And Reactivating Span Sessions; Encapsulating Frames; Span Conversion Behavior - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

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

Suspending and Reactivating SPAN Sessions

You can temporarily deactivate (suspend) any SPAN session. The traffic monitoring is stopped during
this time.
To temporarily suspend or reactivate a SPAN session filter, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# span session 1
switch(config-span)#
Step 3
switch(config-span)# suspend
switch(config-span)# no suspend

Encapsulating Frames

The frame encapsulation feature is disabled by default. If you enable the encapsulation feature, all
outgoing frames are encapsulated.
The switchport encap eisl command only applies to SD port interfaces. If encapsulation is enabled, you
see a new line (
To encapsulate outgoing frames (optional), follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# interface fc9/32
Step 3
switch(config-if)# switchport mode SD
Step 4
switch(config-if)# switchport encap eisl
switch(config-if)# no switchport encap eisl

SPAN Conversion Behavior

SPAN features (configured in any prior release) are converted as follows:
•
OL-18084-01, Cisco MDS NX-OS Release 4.x
Encapsulation is eisl
If source interfaces and source VSANs are configured in a given session, then all the source VSANs
are removed from that session.
For example, before Cisco MDS SAN-OS Release 1.0(4):
Session 1 (active)
Destination is fc1/9
No session filters configured
Ingress (rx) sources are
vsans 10-11
fc1/3,
Egress (tx) sources are
fc1/3,
Once upgraded to Cisco MDS SAN-OS Release 1.1(1):
Session 1 (active)
Destination is fc1/9
Purpose
Enters configuration mode.
Configures the specified session (1).
Temporarily suspends the session.
Reactivates the session.
) in the show interface SD_port_interface command output.
Purpose
Enters configuration mode.
Configures the specified interface.
Configures the SD port mode for interface fc9/32.
Enables the encapsulation option for this SD port.
Disables (default) the encapsulation option.
Cisco MDS 9000 Family CLI Configuration Guide
Configuring SPAN
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