User`s guide

Configuring
3-45
TP- transparent SR- source route SRT- source route transparent
(non token ring port) SRT/TR- source route transparent on a token
ring port, i.e., SRTB enabled.
Notes: RIF caching can only be performed on a Token Ring port when it
is set for SRT mode and is either the entrance or exit port. If there
is a station directly attached to the ATX and it sends out a frame
with a NULL RIF the ATX will not cache that station with RIF
associated with it and treat it as a transparent station. A NULL
RIF includes only two bytes with no bridge or ring numbers
because it has not traversed any bridges. See example 2 on page
47. The ATX can only cache the RIF on IP, IPX, AppleTalk, SNA
SRT-TP
FRAME
(FDDI or TR)
SRT (TR
only)
NO YES
ARE OR
STE (null
RIF)
SRT-SR
FRAME
(FDDI or TR)
SRT (TR
only)
NO NO
SOURCE
ROUTE
SRT-TP
FRAME (TR
only)
SRT (TR
only)
NO YES
SOURCE
ROUTE
SRT-SR
FRAME (TR
only)
SRT (TR
only)
NO NO
SOURCE
ROUTE
SRT (TR
only)
TP (Eth,
FDDI or TR)
YES NO
TRANSPAR-
ENT
SRT (TR
only)
SR (TR only) NO NO
SOURCE
ROUTE
SRT (TR
only)
SRT (FDDI
or TR)
YES NO
TRANSPAR-
ENT
Table 3-3 SRTB USAGE IN THE ATX
Entrance
Port Config
Exit Port
Config
Strip and
Cache
Append RIF
from Data
Base
Forward as: