Line Rate; Vlan Mapping; Traffic Redirecting - H3C S5100-SI Operation Manual

For example, Device A sends packets to Device B. Device B performs traffic policing on
packets from Device A and drops the packets exceeding the limit.
To avoid unnecessary packet loss, you can perform traffic shaping for the packets destined
for Device B on the outgoing interface of Device A. Thus, packets exceeding the limit are
cached in Device A and sent when enough resources are available. This ensures that all
traffic sent to Device B conforms to the traffic specification defined on Device B.

Line Rate

Line rate refers to limiting the total rate of inbound or outbound packets on a port.
Line rate can be implemented through token buckets. That is, if you perform line rate
configuration for a port, the token bucket determines the way to process the packets to be
sent by this port or packets reaching the port. Packets can be sent or received if there are
enough tokens in the token bucket; otherwise, they will be dropped.
Compared to traffic policing, line rate applies to all the packets passing a port. It is a
simpler solution if you want to limit the rate of all the packets passing a port.

Traffic Redirecting

Traffic redirecting classifies traffic using ACLs and redirects the matched packets to
specific ports. With traffic redirecting, you can change the way in which a packet is
forwarded to achieve specific purposes.

VLAN Mapping

VLAN mapping classifies traffics using ACLs and maps the VLAN tags carried in matched
packets to specific VLAN tags. By employing VLAN mapping on a switch connecting
customer networks to the service provider network, you can map the VLAN tags of specific
customer network packets to those of specific VLANs in the service provider network, thus
meeting the requirements of the service provider network.
Queue Scheduling
When the network is congested, the problem that many packets compete for resources
must be solved, usually through queue scheduling.
An S5100 switch supports strict priority (SP) queuing, weighted round robin (WRR)
queuing, and shaped deficit WRR (SDWRR) queuing.
1-15