Traffic Mirroring; Qos Configuration; Configuring Priority Trust Mode; Configuring Priority Mapping - 3Com 4210 9-Port Configuration Manual

Large amount of broadcast/multicast packets and large burst traffic exist.
Packets of high-rate links are forwarded to low-rate links or packets of multiple links with the equal
rates are forwarded to a single link that is of the same rate as that of the incoming links.
Although the burst function helps reduce the packet loss ratio and improve packet processing capability
in the networks mentioned above, it may affect QoS performance. So, use this function with caution.

Traffic Mirroring

Traffic mirroring classifies traffic using ACLs and copies the matched traffic from all ports or the
specified VLAN/port to the destination port. For more information about mirroring, refer to the Mirroring
module of this manual.

QoS Configuration

Table 1-8 QoS configuration tasks

Configuring Priority Trust Mode

Configuring Priority Mapping

Marking Packet Priority

Configuring Traffic Policing

Configuring Port Rate Limiting

Configuring Traffic Redirecting
Configuring Queue Scheduling
Configuring Traffic Accounting
Enabling the Burst Function
Configuring Traffic Mirroring
Displaying QoS
Configuring Priority Trust Mode
The switch provides the following two priority trust modes:
Trusting port priority
By default, the 4210 series trust port priority.
Trusting packet priority
You can configure the switch to trust the 802.1p priority or DSCP precedence of packets. If no trusted
priority type is specified, the switch trusts the 802.1p priority of received packets.
For detailed information about priority trust mode, refer to
Configuration prerequisites
The priority trust mode to be configured is determined.
Task
1-12
Remarks
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Priority trust mode.