Cabletron Systems STS16-20R Flash Memory Installed, Burned-in MAC Address, Configured MAC Address

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Flash Memory Installed

Amount (in KB) of flash memory installed. Information in this field cannot be changed.

Burned-in MAC Address

The factory-assigned base MAC address of the SmartStack STS16-20D/STS16- 20R. Information in this field cannot be changed.

Configured MAC Address

The MAC address that is currently in use, or, if a new MAC address has been configured, the MAC address that will be used after the next boot. If a locally administered address is assigned to the SmartStack STS16-20D/STS16-20R, this field displays that address. Otherwise, the field displays “000000:000000”. To assign a locally administered address, select this field, and enter the new address. Note that the switch occupies this address, the base MAC address, and possibly the next 96 addresses.

TO configure a LAA address, use the Configuration screen from a console session or an SNMP based management tool. Note that a restart is necessary when changing the base MAC address.

The greeting screen on the console will always show the current active Switch base Address.

The SmartStack STS16-20D/STS16-20R reserves 31 addresses for ports.

The Token Ring ports on a SmartStack STS16-20D/STS16-20R switch will be assigned MAC addresses using the following scheme:

•BASE Module port 1–20 Will be assigned Switch Base Address + port number

Or:

A Token Ring port will be assigned a MAC address, which is Switch Base Address

+the port number displayed on the port configuration screen (or interface table for SNMP).

This MAC address is used for the Token Ring MAC protocol, and for the spanning tree protocol.

The SmartStack STS16-20D/STS16-20R reserves 63 addresses for BRF (VLAN).

Each VLAN has an attached bridge relay function (BRF) and a Management entity (IP-protocol stack), and consequently it needs a MAC Address. In the SmartStack STS16-20D/STS16-20R, these two logical units use the same address, however this address must be unique in the network. This is ensured by assigning MAC address to BRF’s from the Switch Base Address + 32 (0x20) and upwards. The SmartStack STS16-20D/STS16-20R is designed in such a way, that it operates with 63 active

Switch Configuration SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide