Monitoring and Analyzing Switch Operation

Traffic Mirroring

You can reduce the risk of oversubscribing a single exit port by:Directing traffic from different session sources to multiple exit ports

Configuring an exit port with a higher bandwidth than the monitored source port

You can segregate traffic by type, direction, or source.Mirroring Configuration

Table B-1 shows the different types of mirroring that you can configure using the CLI, Menu, and SNMP interfaces.

Table B-1. Mirroring Configuration Options

Monitoring

Traffic Selection

 

Traffic Direction

 

Interface and

Criteria

 

 

 

CLI Config

Menu and Web

SNMP Config

Configuration

 

Level

 

 

I/F Config1

 

VLAN

All traffic

Inbound only

All traffic

Inbound only

 

 

Outbound only

(inbound and

Outbound only

 

 

Both directions

outbound

Both directions

 

 

 

combined)

 

 

 

 

 

 

 

ACL (IP traffic)2

See “Selecting Inbound Traffic Using Advanced Classifier-

 

 

Based Mirroring” on page B-67.

 

 

 

 

 

 

 

Classifier-based

Inbound only

Not available

Not available

 

policy(IPv4orIPv6

 

 

 

 

traffic)

 

 

 

 

 

 

 

 

Port(s)

All traffic

Inbound only

All traffic

Inbound only

Trunk(s)

 

Outbound only

(inbound and

Outbound only

Mesh

 

Both directions

outbound

Both directions

 

 

combined)

 

 

 

 

 

 

 

 

 

 

 

ACL (IP traffic)2

See “Selecting Inbound Traffic Using Advanced Classifier-

 

 

Based Mirroring” on page B-67.

 

 

 

 

 

 

 

Classifier-based

Inbound only

Not available

Not available

 

policy(IPv4orIPv6

 

 

 

 

traffic)

 

 

 

 

 

 

 

 

Switch

MAC source/

Inbound only

Not available

Inbound only

(global)

destination

Outbound only

 

Outbound only

 

address

Both directions

 

Both directions

 

 

 

 

 

1Configures only session 1, and only for local mirroring.

2In release K.14.01 and greater, the use of ACLs to select inbound traffic in a mirroring session (using the <interface vlan> monitor ip access-group in mirror command) has been deprecated and is replaced with classifier-based mirroring policies.

B-35