
Chapter 4: Feature Description
Ethernet Features
Global Switch Configuration
The following parameters are configured globally for the PTP 820S switch:
•
S- VLAN Ethertype –Defines the ethertype recognized by the system as the S-VLAN ethertype.
PTP 820S supports the following S-VLAN ethertypes:
o
0x8100
o
0x88A8 (default)
o
0x9100
o
0x9200
•
C-VLAN Ethertype – Defines the ethertype recognized by the system as the C-VLAN ethertype.
PTP 820S supports 0x8100 as the C-VLAN ethertype.
•
MRU – The maximum segment size defines the maximum receive unit (MRU) capability and
the maximum transmit capability (MTU) of the system. Users can configure a global MRU for
the system. Permitted values are 64 bytes to 9612 bytes.
Automatic State Propagation
Related topics:
•
•
•
Automatic State Propagation (ASP) enables propagation of radio failures back to the Ethernet port.
You can also configure ASP to close the Ethernet port based on a radio failure at the remote
carrier. ASP improves the recovery performance of resiliency protocols.
Note
It is recommended to configure both ends of the link to the same ASP configuration.
Automatic State Propagation Operation
ASP is configured as pairs of interfaces. Each ASP pair includes a Monitored Interface and a
Controlled Interface. The Monitored Interface is a radio interface. The Controlled Interface can be a
single Ethernet interface or a LAG. Only one ASP pair can be configured per radio interface, and
only one ASP pair can be configured per Ethernet interface and LAG.
The following events in the Monitored Interface trigger ASP:
•
Radio LOF
•
Radio Excessive BER
The user can also configure the ASP pair so that Radio LOF, Radio Excessive BER, or loss of the
Ethernet connection at the remote side of the link also triggers ASP.
When a triggering event takes place:
•
If the Controlled Interface is an electrical GbE port, the port is closed.
•
If the Controlled Interface is an optical GbE port, the port is muted.
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