
Configuring Line Services
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Specifying a MAC Address Source
By default, the Token Ring interface uses the MAC address in PROM on the link
module. You can set the source for MAC addresses on a Token Ring interface to
• BOXWIDE -- the interface uses a MAC address that the software generates
from the BayStream platform’s serial number.
• PROM -- the interface uses a MAC address from programmable read-only
memory on the Token Ring link module.
• CNFG -- you explicitly assign a MAC address with the MAC Address
Override parameter.
Specifying the Ring Speed
You can set the ring speed for a Token Ring interface to 4 or 16 Mb/s. By default,
the ring speed is 16 Mb/s.
If you use 16 Mb/s, the BayStream software enables the Early Token Release
protocol, which is used extensively on 16-Mb/s media. In the unlikely event that
you want to disable Early Token Release over 16-Mb/s Token Ring media, disable
Early Token Release as described in the next section.
Enabling or Disabling Early Token Release
Early token release indicates that the token can return to the ring before the
recipient copies all data. By default, Site Manager enables early token release on
an interface.
You can disable or reenable early token release on an interface only when the
Ring Speed is16 Mb/s.
Site Manager: MAC Address Select parameter: page A-13
Site Manager: Speed parameter: page A-13
Site Manager: Early Token Release parameter: page A-13
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