ADTRAN Total Access 5000 Deployment Manual page 181

The Committed Burst Size (CBS) equals the amount of bytes the traffic is allowed to burst
above and beyond the CIR before it falls into the EIR "bucket". The traffic is still left as green
and is unmarked.
The Excess Burst Size (EBS) equals the amount of bytes the traffic is allowed to burst above
and beyond the EIR before it is marked as red and discarded. This traffic is marked as yellow.
NOTE
If a two rate policer is used, such that traffic is marked yellow, the DEI/CFI bit
is used to mark the traffic. In the this application, the bit is being used to mark
the traffic as discard eligible. It is not being used as a CFI bit. Ensure that
other switching hardware in the network can handle this differentation, or the
traffic will be dropped by the hardware because the CFI usuage will render
the traffic invalid.
Configuration of DEI marking can be performed per interface using the
s-tag-dei
which forces all frames to have the bit set to 0 for CFI compatability mode.
The NetVanta 800s default to have this enabled for the EFM‐Groups and
disabled for the ethernet and gigabit ethernet interfaces.
Policers can be mapped per EVC, EVC‐Map, Ethernet port, Gigabit‐Ethernet port, or EFM
bonding group. To create a policer and assign it to a traffic flow, complete the following
procedure:
1. From the Global Configuration prompt, type policer <policer_name> , and press
2. From the Policer Configuration prompt, type cir <cir_rate> , and press E
3. From the Policer Configuration prompt, type eir <eir_rate> , and press E
4. From the Policer Configuration prompt, type cbs <cbs_bytes> , and press E
5. From the Policer Configuration prompt, type ebs <ebs_bytes> , and press E
6. From the Policer Configuration prompt, type one of the following and press E
7. From the Policer Configuration prompt, type no shutdown , and press E
8. From the Policer Configuration prompt, type end , and press E
9. From the Enable prompt, type show policer , and press E
65K510DEP08-1A
command to enable marking or no s-tag-dei command
Enter to create the policer.
the committed information rate, in kbps.
the excess information rate, in kbps.
the committed burst size, in bytes.
the excess burst size, in bytes.
assign the policer to the desired element:
per custom evc-map <EvcMapName>
per evc <EvcName>
per uni efm-group 1/0/1
per uni ethernet 1/0/<ethernet_port>
per uni gigabit-ethernet 1/0/1
the policer.
prompt.
and the status of each.
Section 6, EoTDM Provisioning - Provision Policers in the NetVanta 800
NTER to set
NTER to set
NTER to set
NTER to set
NTER to
to enable
NTER
to return to the Enable
NTER
to view a list of policers
NTER
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