Understanding Layer 2 Port Mirroring Properties; Packet-Selection Properties; Packet Address Family - Juniper EX9200 Features Manual

Port Mirroring Feature Guide for EX9200 Switches
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Understanding Layer 2 Port Mirroring Properties

Packet-Selection Properties

Packet Address Family

4
Understanding Layer 2 Port Mirroring Properties on page 4
Restrictions on Layer 2 Port Mirroring
Application of Layer 2 Port Mirroring Types
Application of Layer 2 Port Mirroring Types
Port mirroring specifies the following types of properties:
Packet-Selection Properties on page 4
Packet Address Family on page 4
Mirror Destination Properties on page 5
Mirror-Once Option on page 5
The packet-selection properties of Layer 2 port-mirroring specify how the sampled
packets are to be selected for mirroring:
The number of packets in each sample.
The number of packets to mirror from each sample.
The length to which mirrored packets are to be truncated.
The packet address family type specifies the type of traffic to be mirrored. In a Layer 2
environment, MX Series routers and EX Series switches support port mirroring for the
following packet address families:
Family type
ethernet-switching
is configured with encapsulation type
Family type ccc —For mirroring Layer 2 VPN traffic.
Family type —For mirroring VPLS traffic.
vpls
NOTE: In typical applications, you send mirrored packets directly to an
analyzer or a workstation for analysis, not to another router or switch. If you
must send mirrored packets over a network, you should use tunnels. For
Layer 2 VPN implementations, you can use the Layer 2 VPN routing instance
type to tunnel the packets to a remote destination.
l2vpn
For information about configuring a routing instance for Layer 2 VPN, see the Junos OS
VPNs Library for Routing Devices. For a detailed Layer 2 VPN example configuration, see
—For mirroring VPLS traffic when the physical interface
.
ethernet-bridge
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