Multilink; Short-Hold; Ip Control Protocol (Ipcp); Compression Of Ip Headers - Siemens HiPath 3000 Series Service Documentation

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h3h5_in_the_lan.fm

HiPath 3000/5000 in the LAN Network

HG 1500 Board

MAC Address Filters for Using the Gateway from within the LAN

MAC address filters can limit access to the router from devices within the LAN. When MAC fil-

tering is activated, only devices within the LAN whose IP and MAC addresses have explicit per-

mission to do so may set up a connection via the HG 1500. (This function cannot be defined

with dynamic IP address allocation in the LAN via BootP or DHCP).

Access Protection for Administrative Access

General administrative access and access to accounting data can each be separately limited

to specific IP addresses, regardless of any other IP filters.

Multilink

The HG 1500 can set up static or dynamic PPP connections with a remote station via several

B channels simultaneously.

A static multilink uses the same number of B channels for the duration of the connection. A dy-

namic multilink adds or removes channels depending on current channel load. These param-

eters can be configured.

After a preconfigured time period with no data transfer over a PPP connection, the HG 1500

can clear down the connection automatically.

The HG 1500 supports the IP Control Protocol (IPCP) for dynamic handling of IP addresses

during connection setup.

Significant protocol overhead can develop, especially during voice data transmission where

user data in a packet is typically short. To improve the situations, the HG 1500 supports the

compression of IP headers according to RFC 2507 and RFC 2508. The compression is nego-

tiated during the configuration of the connection with the receiver in accordance with RFC 1332

and RFC 2509.

User data in a PPP connection can be compressed with the STAC or the MPPC algorithm. The

compression for each channel is negotiated separately with the remote station.

Nur für den internen Gebrauch

A31003-H3590-S100-7-7620, 06/2012

HiPath 3000/5000 V9, Service documentation

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