
Chapter 4: Feature Description
Ethernet Features
The following read-only logical interface status parameters can be viewed by users:
•
Traffic Flow Operational Status – Indicates whether or not the logical interface is currently
functional.
Logical Interface Statistics
RMON Statistics at Logical Interface Level
, if the logical interface represents a
group, such as a LAG or a 1+1 HSB pair, the PTP 820S platform stores and displays RMON and
RMON2 statistics for the logical interface.
Rate Meter (Policer) Statistics at Logical Interface Level
For the rate meter (policer) at the logical interface level, users can view the following statistics
counters:
•
Green Frames
•
Green Bytes
•
Yellow Frames
•
Yellow Bytes
•
Red Frames
•
Red Bytes
Note
Rate meter (policer) counters are 64 bits wide.
Link Aggregation Groups (LAG)
Link aggregation (LAG) enables users to group several physical interfaces into a single logical
interface bound to a single MAC address. This logical interface is known as a LAG group. Traffic
sent to the interfaces in a LAG group is distributed by means of a load balancing function. PTP
820S uses a distribution function of up to Layer 4 in order to generate the most efficient
distribution among the LAG physical ports, taking into account:
•
MAC DA and MAC SA
•
IP DA and IP SA
•
C-VLAN
•
S-VLAN
•
Layer 3 Protocol Field
•
UDP/TCP Source Port and Destination Port
•
MPLS Label
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