Avaya Configuring Bridging Services Uživatelský manuál stáhnout pdf (Strana 241)

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117351-B Rev. 00

B-1

Appendix B

Components of a Source Route Frame

A source route frame consists of the fields shown in Figure B-1.

Figure B-1. Fields in a Source Route Frame

802.5 Physical Header

The 802.5 physical header consists of the following fields:

• Starting delimiter

• Access control field

• Frame control field

• Destination address

• Source address field

If the first (far-left) bit of the source address is 0, the frame contains no source

routing information. If the first bit is a 1, the bridge code examines the frame and

looks for a RIF field.

8.02 Physical

Header

Routing Info

Field (RIF)

802.5 Physical

Header

Data 802.5 Trailer

1 2 ... 236 237 238 239 240 241 242 243 244 245 246 ... 259 260

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