observe-port (local observing port)

Function

The observe-port command configures local observing ports.

The undo observe-port command deletes local observing ports.

By default, no local observing ports are configured.

Format

Configure a single local observing port

observe-port [ observe-port-index ] interface interface-type interface-number [ untag-packet ]

Configure a local observing port group

observe-port [ observe-port-index ] interface-range { interface-type interface-number [ to interface-type interface-number ] } &<1-n> [ untag-packet ] (Only supported by S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S; n in &<1-n> is 4 on an S5720-EI, S6720-EI, and S6720S-EI and 8 on an S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S.)

observe-port observe-port-index interface-range { add | delete } interface-type interface-number ( Only S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.)

undo observe-port observe-port-index

Parameters

Parameter	Description	Value
observe-port-index	Specifies the index of an observing port.	The value is an integer. The value ranges from 1 to 8 on the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S, ranges from 1 to 4 on the S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735-S-I, and S5735S-S, and ranges from 1 to 6 on other devices.
interface-type interface-number	Specifies the type and number of an interface.	-
add	Adds observing ports to the observing port group.	-
delete	Deletes observing ports from the observing port group.	-
untag-packet	Removes VLAN tags of original traffic. NOTE: Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this parameter. Each original packet can have at most two VLAN tags removed.	-

Views

System view

Default Level

3: Management level

Usage Guidelines

Usage Scenario

When an observing port is directly connected to a monitoring host, you can run the observe-port command to configure a local observing port. There are two modes for configuring observing ports: configure a single observing port and configure an observing port group. Observing port group is often used in 1:N mirroring to simplify the configuration and save observing port indexes. This is because an observing port group occupies only one observing port index regardless of how many ports are configured in the group.

Precautions

The management interface cannot be configured as an observing port.
If you configure observing ports without specifying observe-port-index, the system selects the smallest unused indexes and assigns the indexes to the observing ports in sequence.
In 1:N mirroring, if you configure packets (in the inbound or outbound direction) on a mirrored port to be copied to an observing port group, the packets cannot be copied to other observing ports.
On the S5735-L, S5735S-L, S5735S-L-M, S5735-S, S5735S-S, S5735-S-I, S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730-H, S6730S-H, S6730-S, and S6730S-S, both Ethernet ports and Eth-Trunks can be configured as observing ports. On other devices, only Ethernet ports can be configured as observing ports.
An observing port in blocked state can still forward mirrored traffic.
You must dedicate observing ports for mirroring use and do not configure other services on them to prevent mirrored traffic and other service traffic from affecting each other. Do not configure any member port of an Eth-Trunk as an observing port. If you must do so, ensure that the bandwidth of service traffic on this port and the bandwidth occupied by the mirrored traffic do not exceed the bandwidth limit of the port.

Example

# Configure GigabitEthernet0/0/1 as a local observing port.

<HUAWEI> system-view
[HUAWEI] observe-port 1 interface gigabitethernet 0/0/1

# Configure GigabitEthernet0/0/1 through GigabitEthernet0/0/3 as a local observing port group.

<HUAWEI> system-view
[HUAWEI] observe-port 1 interface-range gigabitethernet 0/0/1 to gigabitethernet 0/0/3