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Ethernet media module in slot 2 will also turn on to indicate those ports have
been assigned to Ethernet_1. If there were more media modules with ports
assigned to Ethernet_1 their port LEDs would also turn on. Because Ethernet_2,
3 and 4 are not being used, the next time the button is pressed the LCD display
will jump to ″E5″, the DMM network status LED for Ethernet 5 will turn on and the
LEDs for ports 15, 16 and 17 on the 8260 Ethernet media module in slot 4 will
also turn on to indicate those ports are assigned to Ethernet_5.
To display the EC-DMM microcode version, press the button until the display
reads Vers. One second after releasing the button the version will be displayed.
Table 12 shows the possible states of the display.
Table 12. EC-DMM LCD Display
Display Definition
Diag The EC-DMM is running diagnostics
Rdy The EC-DMM is the active (master) management module
Stby The EC-DMM is in standby mode
Dnld New microcode is being downloaded
E1-E8,EI Shows active networks only; EI for isolated
TR1-10,TRI Shows active networks only; TRI for isolated
F1-F4,FI Shows active networks only; FI for isolated
Vers Microcode level of the DMM
LED Displays when the controller LED test button is pressed
4.4 MAC Daughter Cards
To be able to monitor the network traffic activity on the backplane segments, as
well as to be able to communicate with other stations using IP, DMM requires
the services provided by MAC daughter cards.
These daughter cards connect to the networks, listen to the traffic flow and pass
traffic information back to the DMM. They also provide the DMM with the
interface to the networks on the backplane so that it can communicate with the
other stations on that network.
The MAC daughter cards are protocol specific cards and at the time of writing
this book the following two types of MAC daughter cards were available:
•
The E-MAC (Ethernet - Media Access Card)
•
The T-MAC (Token-ring - Media Access Card)
These daughter cards can be installed on the media modules that use the same
protocol. That is, T-MACs can be installed on token-ring media modules, and
E-MACs can be installed on Ethernet media modules. Each token-ring or
Ethernet media module can accommodate installation of one MAC daughter card
(Ethernet 40-port module allows the installation of two MAC daughter cards).
Additionally, the E-MACs can be installed on the EC-DMM. Each EC-DMM can
accommodate the installation of up to 6 E-MACs.
Regardless of where the MAC daughter cards are installed, they can be
assigned to any of the backplane segments. However, to assign a MAC
Chapter 4. 8260 Distributed Management Architecture 61