Port mirroring is used to send a copy of network traffics of a VM NIC
from a port to another port, and analyze the business packets on the ports. With port
mirroring, network data can be monitored and managed. In addition, problems can be
quickly located when network failures occur.
Create Port Mirroring
In the navigation pane of the ZStack Private
Cloud UI, choose Network Service > Port Mirroring. On the Port Mirroring page, click
Create Port Mirroring. On the displayed Create
Port Mirroring page, set the following parameters:
Name: Enter a name for the port mirroring.
Description: Optional. Enter a description for the
port mirroring.
Flow Network: Select a flow network used by the port
mirroring.
Note:
A flow network is a dedicated network for port mirroring, and
can be used to mirror the network traffic of a NIC to the remote
end.
A flow network applies to only port mirroring and cannot be used
as other networks.
One port mirroring occupies one flow network.
Make sure that the VM instances monitored by port mirroring is
in the cluster to which the flow network is attached.
Enable immediately after creation: Choose whether to
enable port mirroring immediately after it is created. Note that enabling
the port mirroring might occupy physical network bandwidth. Before you
select this checkbox, make sure that the business can work properly.
Add session immediately after creation: Choose
whether to add sessions immediately after the port mirroring is created. A
session is used to create a port mirroring of the network traffics for a VM
NIC. Note that one port mirroring can add multiple sessions.
You can create port mirroring, as shown in Figure 1.Figure 1. Create Port Mirroring
Add Session
A session is used to create a port mirroring of the network
traffics for a VM NIC. After a session is added, the session will send a copy of the
network traffics on the source port to the destination port. You can select
Add session immediately after creation to add sessions
directly when you create a port mirroring, or add sessions after you create a port
mirroring. If you use the second method, set the following parameters:
Name: Enter a name for the session.
Type: Select a direction of the network traffic to be
copied by the port mirroring. Options: Ingress | Egress | Bidirection.
Ingress: Sends a copy of packets received from the source port to
the destination port.
Egress: Sends a copy packets sent from the source port to the
destination port.
Bidirection: Sends a copy of packets received and sent by the source
port to the destination port.
VM Instance and NIC of the
source port: Select the VM instance and NIC to be monitored. Packets sent
from and received by the source port will be copied to the destination
port.
VM Instance and NIC of the
destination port: Select the VM instance and NIC for receiving the port
mirroring. The destination port is used to send the packets copied from the
source port to the monitoring device.
Note:
The VM NIC of the destination port cannot be the default network
NIC.
To ensure the port mirroring work properly, do not set QoS for
NICs on the source port and destination port.
You can add a session, as shown in Figure 2.Figure 2. Add Session
Port Mirroring Operations
You can perform the following operations on a port mirroring:
Change name and description: Change the name and description of the port
mirroring.
Enable: Enable the port mirroring.
Disable: Disable the port mirroring.
Delete: Delete the port mirroring.
Add session: Add a session to the port mirroring.
Delete session: Delete a session from the port mirroring.
Audit: View related operations supported by the port mirroring.
Note:
