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When you assign an 8250 token-ring module to one of the token-ring networks on
the Enhanced TriChannel (tr_8250_1 through tr_8250_7) using the following
command:
SET MODULE {slot.sublsot} NETWORK {token_ring_n}
The 8260 will automatically allocate one of the available token-ring paths to this
module. Note that you can neither choose the path used by the module, nor
determine which path is used by a specific module. However, you can
determine all token-ring paths on the Enhanced TriChannel which are currently
being allocated in your hub by using the following management module
command:
SHOW BACKPLANE_PATHS TOKEN_RING
An example of the output from this command is shown in Figure 6.
8260> show backplane_paths token_ring
Physical Path Logical Network
--------------- ---------------
TR_PATH_8250_1 in use
TR_PATH_8250_2 in use
TR_PATH_8250_3 in use
TR_PATH_8250_4 in use
TR_PATH_8250_5 in use
TR_PATH_8250_6 in use
TR_PATH_8250_7 TR_8250_1
TR_PATH_8250_8 available
TR_PATH_8250_9 TR_8250_1
TR_PATH_8250_10 available
TR_PATH_8250_11 in use
TR_PATH_8250_12 in use
TR_PATH_8250_13 TR_8250_1
TR_PATH_8250_14 available
TR_PATH_8250_15 available
8260>
Figure 6. Token-Ring Backplane Path Display
The number of token-ring paths used by a single token-ring network on the
Enhanced TriChannel equals the number of token-ring modules on that network.
Note that the token-ring paths on the Enhanced TriChannel use the same pins on
the backplane as are used by the Ethernet and/or FDDI segments. Therefore,
simultaneous configuration of other types of networks in your hub will impact the
number of token-ring networks allowed in your hub. In Figure 6, the token-ring
paths shown as in ″in use″ are those backplane pins that are used by other
segment types (that is, Ethernet or FDDI), whereas tr_path_8250_7,
tr_path_8250_9 and tr_path_8250_13 are used to configure a single token-ring
segment (tr_8250_1) consisting of three 8250 token-ring modules. Also, note that
20 8260 Multiprotocol Intelligent Switching Hub