Port Features
Page 58
7750 SR OS Interface Configuration Guide
Removing or Failure of a Protect MDA
The detection of an MDA removal or an MDA failure can take additional time. This can affect the
APS switchover time upon the removal or failure of a protection MDA. If the removal is scheduled
during maintenance, it is recommended that the port and/or protect circuit be shutdown.
Protection of Upper Layer Protocols and Services
For a single-chassis APS, upper Layer protocols and services are not affected by a switchover
from the working to the protect channel or vice versa.
Figure 8: APS Working and Protection Channel
displays that the APS working channel is connected to IOM-1 / MDA-1 and the
protection channel is connected to IOM-2 / MDA-1. In this example, assume that the working
channel is currently used to transmit and receive data.
IOM-CPU
MDA-1
Flexible FastPath
Complex
MDA-2
Flexible FastPath
Complex
IOM-CPU
APS-CTL
Services
IOM-CPU
APS Working
MDA-1
Flexible FastPath
Complex
MDA-2
Flexible FastPath
Complex
MDA-1
Flexible FastPath
Complex
MDA-2
Flexible FastPath
Complex
APS Project
IOM-1
IOM-2
IOM-3
Fig_4
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Страница 16: ...Getting Started Page 16 7750 SR OS Interface Configuration Guide ...
Страница 184: ...Card MDA and Port Command Reference Page 184 7750 SR OS Interface Configuration Guide ...
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Страница 438: ...Debug Commands Page 438 7750 SR OS Interface Configuration Guide ...
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