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SMDS Overview

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SMDS Individual Addresses

An SMDS individual address is a unique address that the SMDS provider assigns

to an SNI. Speciﬁcally, an individual address is a media access control layer

(MAC) address in an E.164 format. An E.164 address is a 64-bit address, which

for SMDS is similar to a phone number. For example, the phone number

(617) 555-3923 becomes individual address C161 75 55 39 23 FF FF. The C

indicates that the address is an individual address, and the 1 is a standard preﬁx.

There can be up to 16 individual addresses for one SNI.

SMDS Group Addresses

An SMDS group address is one address that instructs an SMDS switch to

broadcast information, such as routing information packets (RIP) and address

resolution packets (ARP), from the router to multiple destination nodes. SMDS

individual addresses within the SMDS group identify these nodes.

Like an SMDS individual address, the group address is a media access control

layer (MAC) address in an E.164 format. An E.164 address is a 64-bit address,

which for SMDS is similar to a phone number. For example, the phone number

(508) 555-1144 becomes individual address E1 50 85 55 11 44 FF FF. The E

indicates that the address is a group address and the 1 is a standard preﬁx.

For More Information about SMDS

The following documents provide technical details on SMDS and DXI protocol

design and implementation.

Baker, F. and C Kolb.

Deﬁnitions of Managed Objects for the DS1 Interface Type

RFC 1232. Network Information Center (NIC), SRI International, Menlo Park,

California, May 1991.

Bellcore.

Generic Requirements for SMDS Customer Network Management

Service

. Technical Advisory TA-TSV-001062. Issue 2. February 1992.

Bellcore.

Generic System Requirements in Support of Switched Multi-Megabit

Data Service

. Technical Reference TR-TSV-000772. Issue 1. May 1991.

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Avaya Configuring SMDS Bedienungsanleitung Seite 21