Visara FEP-4600 Installation - Manual (Page 56)

Chapter 5. Token Ring Interface
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of those platforms, you may want to set the Token Ring address of the FEP-4600 to that
same address.
Selecting a MAC Address of ‘00:00:00:00:00:00’ will cause the Token Ring interface to
use the burned in address associated with the board itself. This is not recommended.
Since downstream platforms are configured for the MAC address of this unit, replacing
the board in the FEP-4600 would require reconfiguration of all downstream units. Any
other address entered will be used to override the burned in address. Traditionally, locally
administered Token Ring addresses use the format 40:00:xx:xx:xx:xx, where ‘x’ can be
any valid hex digit.
Note that you can not attach the FEP-4600 to the same Token Ring as the platform you
are replacing and have them powered on at the same time if you have duplicate addresses.
(If you have a duplicate address situation, the FEP-4600 will not be allowed to insert into
the ring.) If you want to conduct tests where the FEP-4600 has the same address as the
platform it is replacing, you have two options.
1)
Put the FEP-4600 on the same Token Ring as the FEP or Gateway that it is
replacing. You will need to have only one unit (FEP-4600 or FEP/Gateway)
physically inserted in the ring at any given instant.
2) Put the FEP-4600 on a different Token Ring segment, separated from the original
Token Ring by a Source Routing Bridge. With a Source Routing Bridge
separating the two rings, you may use the same Token Ring address on each of
the rings. Assuming that the downstream stations are configured to support
Source Routing, the downstream stations will connect to whichever upstream
responds first. If the upstream and downstream station are on the same ring, that
upstream will normally respond first.
Ring Speed: For the Ring Speed option, you can configure the Token Ring interface to
auto-negotiate (default) or you can preset it to one of the supported speeds. The full set of
options is:
• Auto Negotiate
• 4 Mbps
• 16 Mbps
• 100 Mbps (works same as Auto Negotiate)
Source Routing: There are three possible configurations for this option.
• All Routes Broadcast – Source Route Bridging is used. Broadcasts to establish a
session will attempt to get to the destination over all possible routes.
• Single Route Broadcast – Source Route Bridging is used. An administrator must
configure which bridges are to be used to pass broadcasts and which ones are not,
thus reducing the number of paths that a broadcast frame has to traverse. (This is
configured on the bridges themselves, not in the FEP-4600.)
• Disable – Source Route Bridging will not be used
Use Burnt in MAC Address: Checking this box will cause the MAC address burned in
by the manufacturer to be displayed and used.