Span And Rspan And Switch Stacks; Configuring Span And Rspan; Default Span And Rspan Configuration; Configuring Local Span - Cisco Catalyst 3120 Software Manual

Chapter 29

Configuring SPAN and RSPAN

SPAN and RSPAN and Switch Stacks

Because the stack of switches is treated as one logical switch, local SPAN source ports and destination
ports can be in different switches in the stack. Therefore, the addition or deletion of switches in the stack
can affect a local SPAN session, as well as an RSPAN source or destination session. An active session
can become inactive when a switch is removed from the stack or an inactive session can become active
when a switch is added to the stack.
For more information about switch stacks, see
Configuring SPAN and RSPAN
These sections contain this configuration information:
•
•
•

Default SPAN and RSPAN Configuration

Table 29-1
Table 29-1
Feature
SPAN state (SPAN and RSPAN)
Source port traffic to monitor
Encapsulation type (destination port)
Ingress forwarding (destination port)
VLAN filtering
RSPAN VLANs

Configuring Local SPAN

These sections contain this configuration information:
•
•
•
•
OL-12247-01
Default SPAN and RSPAN Configuration, page 29-11
Configuring Local SPAN, page 29-11
Configuring RSPAN, page 29-17
shows the default SPAN and RSPAN configuration.
Default SPAN and RSPAN Configuration
SPAN Configuration Guidelines, page 29-12
Creating a Local SPAN Session, page 29-13
Creating a Local SPAN Session and Configuring Incoming Traffic, page 29-15
Specifying VLANs to Filter, page 29-16
Chapter 5, "Managing Switch Stacks."
Default Setting
Disabled.
Both received and sent traffic (both).
Native form (untagged packets).
Disabled
On a trunk interface used as a source port, all VLANs are
monitored.
None configured.
Cisco Catalyst Blade Switch 3120 for HP Software Configuration Guide
Configuring SPAN and RSPAN
29-11