Edge-Core ECS4810-12M Layer 2, Руководство по управлению

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C
HAPTER
35
| ERPS Commands
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D
EFAULT
S
ETTING
0 milliseconds
C
OMMAND
M
ODE
ERPS Configuration
C
OMMAND
U
SAGE
In order to coordinate timing of protection switches at multiple layers, a
hold-off timer may be required. Its purpose is to allow, for example, a
server layer protection switch to have a chance to fix the problem before
switching at a client layer.
When a new defect or more severe defect occurs (new Signal Failure), this
event will not be reported immediately to the protection switching
mechanism if the provisioned hold-off timer value is non-zero. Instead, the
hold-off timer will be started. When the timer expires, whether a defect still
exists or not, the timer will be checked. If one does exist, that defect will
be reported to the protection switching mechanism. The reported defect
need not be the same one that started the timer.
E
XAMPLE
Console(config-erps)#holdoff-timer 300
Console(config-erps)#
major-domain
This command specifies the ERPS ring used for sending control packets.
Use the no form to remove the current setting.
S
YNTAX
major-domain name
no major-domain
name - Name of the ERPS ring used for sending control packets.
(Range: 1-32 characters)
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
ERPS Configuration
C
OMMAND
U
SAGE
◆
This switch can support up to two rings. However, ERPS control packets
can only be sent on one ring. This command is used to indicate that the
current ring is a secondary ring, and to specify the major ring which will
be used to send ERPS control packets.
◆
The Ring Protection Link (RPL) is the west port and can not be
configured. So the physical port on a secondary ring must be the west
port. In other words, if a domain has two physical ring ports, this ring