10.6.1. Central Processor 
Every central processor receives an additional LAN interface for controlling
access points when an IPDA system is installed.
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PHY
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1GBit - autosensing or can be permanently set
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MAC address
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Permanently programmed on the interface card,
->sticker
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IP address
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Configured in the OpenScape 4000 system, can
be set
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IEEE 802.1 p/q VLAN tagging
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Configurable; priority bits are always set when
active. See Table
3 “TOS values” in document “Gateways HG 3500 and HG
3575”.
The VLAN ID can be set. Configuration in the OpenScape
4000 system.
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TOS/DiffServ
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The six highest bits in the TOS byte can be
set. See Table
3 “TOS values” in document “Gateways HG 3500 and HG
3575”. Configuration in the OpenScape 4000 system.
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Protocols/ports
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See Chapter
20, “IP Ports” in the document “Gateways HG 3500 and
HG 3575”.
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Routing
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A host route that is configured in the OpenScape
4000 system is used to every access point. No default route.
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Firewall
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The central processor only allows connections
to addresses that it knows, i.e. access points or assigned service PCs.
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Number of connections
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Up to 166 TCP/IP connections (two per access
point)
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In large systems, two redundant central processors are installed,
one of which is always active. Every processor has its own IP network
connection with its own IP and MAC address. PHY is active in the processor.
However, the processor does not receive and send packets.