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DT Etherlink IV
4.6.5.66 <ERATE [speed/OFF]> Command
The command ERATE is an abridgement of Egress Rate. It limits the traffic heading to CPU of the
device.
ERATE command counts all traffic, but unlike IRATE command the QoS settings make sense for
traffic drop. In case if traffic has bigger bandwidth then the ERATE settings the device will drop
traffic starting from packets with low priority tag.
Network administrator can configure QoS with IRATE and ERATE commands if LAN ports of the
device works in ACCESS mode. He has to be sure that those LAN ports of the device have different
default QoS or VLAN settings.
ERATE [rate]: Sets the desired rate limit.
ERATE OFF: Disable rate limiting.
The parameter [rate] is expressed in kbits or Mbits, for example:
30M means 30000kbps
4.6.5.67 <CRATE [speed] [CoS] [WAN]> Command
The command CRATE is an abridgement of CoS Rate. It limits the egress bandwidth of selected
CoS queue for specified WAN interface. Starting from the 1.3.0 firmware S-Access ETH_IV and
AccessMini devices have 4 CoS queues with numbers from 0 to 3. The queue with "0" number has
the lowest priority while the queue with "3" number has highest priority. Command CRATE is not
intended to define QoS [0...7] to CoS; or VLAN ID to CoS mapping. On the contrary, it is designed
for assigning bandwidth each CoS queue can occupy.
Only CRATE command can be used if incoming traffic has VLANs, IRATE command is useless
because the hardware Ethernet switch can't check the QoS filed on its entry point. CRATE can be
used too if the traffic is not intended for LAN interface, for example repeater applications or interface
converter mode when traffic is transmitted between two or several WAN interfaces.
User Manual
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