Cabletron Systems STS16-20R - Manual (Page 96)

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SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide Switch Configuration
or preferred VLAN’s, implying that 63 MAC addresses need to be reserved for
BRF.
Summarizing each SmartStack STS16-20D/STS16-20R reserve: Switch Base
Address + 31 Addresses for Token Ring ports + 63 MAC Addresses for BRFs = 95,
which is rounded up to 96 or hexadecimal 0x60.
The MAC address of the default BRF (trnet-default) will always be the switch base
address + 32. If the switch operates in a stack, only one of the switches will operate
the bridge relay function. Hence the MAC address of the default BRF will be based
on the address of the stackmaster. The stackmaster is determined by software, when
the stack consists of two switches back to back and by the port numbers in STS-
8SU/STS-5SU stack configurations.
There is no simple rule to find the default MAC address of other BRF, but it is
always in the range described in the following:
Stack Master Base Address + 32 < BRF MAC Address < Stack Master Base
Address + 95. And a BRF (VLAN) MAC address is assigned, when the VLAN
becomes preferred (that is, it has an assigned port in the actual switch or stack
of switches) by selecting the lowest available MAC address above Stack Master
Base Address + 32.
If management (SNMP or TELNET) contact with the switch is lost (because, for
example, ports are moved from one BRF to another) it is suggested, that a terminal
is connected to the OBM port of the switch stack, and the IP Configuration menu
is entered. From here, it is possible to read the MAC address of the management
entity (BRF).
In version 3.10.0 (and later) it is possible to assign an individual, locally
administrated MAC address to each VLAN.
➽ Note ! A reboot of the switch is necessary after assigning the VLAN LAA. See
"VLAN Configuration" on page 86.
Address Format
Display format used for MAC addresses (canonical or non-canonical). Canonical
format is typically used in Ethernet networks and is also known as least significant
bit first. Non-canonical is typically used in Token Ring networks and is also known
as most significant bit first.
System Name
Any name you choose to assign to the switch (on a TCP/IP network, it could be the
IP hostname).
System Location
Any text string of max. 64 characters that you have assigned for the switch.