Alcatel-Lucent 7710 SR OS, Руководство по настройке интерфейса

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Interface Configuration
7710 SR OS Interface Configuration Guide Page 99
Configuration Notes
The following information describes provisioning caveats:
• Chassis slots must be preprovisioned to accept specific line card types.
• Line cards must be preprovisioned to accept specific MDA types.
If a card or MDA type is installed in a slot provisioned for a different type, the card will
not initialize.
• A card and MDA installed in an unprovisioned slot remain administratively and
operationally down until the slot, card type, MDA slot, and MDA type is specified.
• Ports cannot be provisioned until the slot, card and MDA type are specified.
• cHDLC does not support HDLC windowing features, nor other HDLC frame types such
as S-frames.
• cHDLC operates in the HDLC Asynchronous Balanced Mode (ABM) of operation.
• All SAP-level statistics are retained with an APS switch. A SAP will reflect the data
received regardless of the number of APS switches that has occurred. ATM statistics,
however, are cleared after an APS switch. Thus, any ATM statistics viewed on an APS
port are only the statistics since the current active member port became active.
Physical layer packet statistics on the APS group reflect what is currently on the active
member port.
• Port and path-level statistics follow the same behavior.
Any SONET physical-layer statistics (for example, B1,B2,B3,...) on the APS port are only
what is current on the active APS member port.
• APS configuration rules:
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A physical port (either working or protection) must be shutdown before
it can be removed from an APS group port.
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For a single-chassis APS group, a working port must be added first. Then a protection
port can be added or removed at any time.
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A protection port must be shutdown before being removed from an APS group.
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A path cannot be configured on a port before the port is added to an APS group.
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A working port cannot be removed from an APS group until the APS port path is
removed.
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When ports are added to an APS group, all path-level configurations are available
only on the APS port level and configuration on the physical member ports are
blocked.
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For APS-protected bundles, all members of a working bundle must reside on the
working port of an APS group. Similarly all members of a protecting bundle must
reside on the protecting circuit of that APS group.