User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 593 of 825
Ceragon Proprietary and Confidential
17.4
Configuring Automatic State Propagation and Link Loss
Forwarding (CLI)
Automatic state propagation enables propagation of radio failures back to the
Ethernet port. You can also configure Automatic State Propagation to close the
Ethernet port based on a radio failure at the remote carrier.
Automatic state propagation is configured as pairs of interfaces. Each interface
pair includes one Monitored Interface and one Controlled Interface.
Automatic state propagation is configured as pairs of interfaces. Each interface
pair includes one Monitored Interface and one Controlled Interface. You can
create multiple pairs using the same Monitored Interface and multiple Controlled
Interfaces.
The Monitored Interface is a radio interface, a radio protection, or Multi-Carrier
ABC group. The Controlled Interface is an Ethernet interface or LAG. An Ethernet
interface can only be assigned to one Monitored interface.
Each Controlled Interface is assigned an LLF ID. If
ASP trigger by remote fault
is
enabled on the remote side of the link, the ASP state of the Controlled Interface is
propagated to the Controlled Interface with the same LLF ID at the remote side of
the link. This means if ASP is triggered locally, it is propagated to the remote side
of the link, but only to Controlled Interfaces with LLF IDs that match the LLF IDs of
the affected Controlled Interfaces on the local side of the link.
Note:
LLF requires an activation key (IP-20-SL-LLF). Without this activation
key, only LLF ID 1 is available. See
Configuring the Activation Key (CLI)
The following events in the Monitored Interface trigger ASP:
•
Radio LOF
•
Radio Excessive BER
•
Remote Radio LOF
•
Remote Excessive BER
•
Remove LOC
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 will also trigger
ASP.
In addition, ASP is triggered if the Controlled Interface is a LAG, and the physical
interfaces that belong to the LAG are set to
Admin = Down
in the Interface
Manager.
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.
The Controlled Interface remains closed or muted until all triggering events are
cleared.
In addition, when a local triggering event takes place, the ASP mechanism sends
an indication to the remote side of the link. Even when no triggering event has
taken place, the ASP mechanism sends periodic update messages indicating that
no triggering event has taken place.
