Cabletron Systems 9A426-01 Technical document

9031919-02
SmartSwitch 9000
9A426-01/9A426-02
Local Management Appendix

1
Appendix
9A426-01/9A426-02
Module Specific Information
Introduction
This appendix contains local management information that is specific to the
following ATM Modules:
• 9A426-01 (1 active front panel port; 1 stand-by front panel port)
• 9A426-02 (2 active front panel ports)
Local Management Screens
The screens shown in this appendix are for the 9A426-02 ATM Module. The
screens for the 9A426-01 ATM Module differ in that there is no Port # field, since
the 9A426-01 ATM Module has only one active front panel port.

9A426-01/9A426-02 Module Specific Information
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Module Interfaces
The 9A426-01 ATM Module has seven interfaces. Table 1 lists the identifying
number, name, and description of each interface.
The 9A426-02 ATM Module has eight interfaces. Table 2 lists the identifying
number, name, and description of each interface.
Use the numbers in Table 1 or Table 2 to configure your module’s default interface
(see the General Configuration Screen).
Table 1. 9A426-01 ATM Module Interfaces
Interface
Number
Interface
Name
Interface
Description
1 SMB-1 1 Mbps System Management Bus
2 SMB-10 10 Mbps System Management Bus
3 HOST 1 i960 Interface to SmartSwitch Core
4 HOST 2 i960 Interface to SmartSwitch Core
5 INB Internal Network Bus
6 ATM-1 ATM Front Panel Port 1 (APIM)
7 FNB Flexible Network Bus
Table 2. 9A426-02 ATM Module Interfaces
Interface
Number
Interface
Name
Interface
Description
1 SMB-1 1 Mbps System Management Bus
2 SMB-10 10 Mbps System Management Bus
3 HOST 1 i960 Interface to SmartSwitch Core
4 HOST 2 i960 Interface to SmartSwitch Core
5 INB Internal Network Bus
6 ATM-1 ATM Front Panel Port 1 (APIM)
7 ATM-2 ATM Front Panel Port 2 (APIM)
8 FNB Flexible Network Bus

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9A426-01/9A426-02 Module Specific Information
Modifying Fields and User Privileges
To modify fields on these modules, you must have read-write or super-user
privileges. If you have read-only privileges, you can view information; however,
you cannot modify any fields.
Virtual Channels andVirtual Paths
Rather than addressing cells to a specific destination, as in a LAN, ATM addresses
cells to Virtual Channels (VCs) and/or Virtual Paths (VPs). This addressing takes
place in the header field of the ATM cell.
VCs and VPs are bi-directional (i.e., they transfer information in both directions
on a single channel or path) and are “set up” between devices on the ATM
network prior to transmission. Similar to WAN transmission, ATM technology
provides the ability of sending several VCs together over a VP, and several VPs
over an ATM link segment.
Permanent and SwitchedVirtual Channels
ATM networks use two different types of Virtual Channels:
• Permanent Virtual Channels (PVCs)
• Switched Virtual Channels (SVCs).
The difference between PVCs and SVCs exists in the channel setup.
PVCs are pre-configured by an administration function, and are usually
established for long-term use. After setting up this channel, nothing else is
required by the network to transfer information between the two established
points. This type of virtual channelling is established through a local or remote
management interface.
SVCs use a signaling and network switching procedure to set up dynamically. In
other words, SVCs are established “on the fly,” as needed for a particular service,
used to transmit on the short term, and then terminated.

9A426-01/9A426-02 Module Specific Information
4
FNB Resource Configuration Screen
The 9A426-01/9A426-02 FNB Resource Configuration Screen (Figure 1), lists all
possible connections a module can support on the FNB, displays the current
connection, and allows you to change the connection.
Figure 1. 9A426-01/9A426-02 FNB Resource Configuration Screen
SmartSwitch 9000 Local Management
FNB Resource Configuration
Module Name: 9A426-02 Firmware Revision: 01.00.01
Slot Number: 5 BOOTPROM Revision: 01.01.01
Current FDDI Con: (#2) FNB1<->ATM
Config ID FDDI Connections
1 NORING<->ATM
2 FNB1<->ATM
3 FNB2<->ATM
SAVE EXIT RETURN

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9A426-01/9A426-02 Module Specific Information
FNB Resource Configuration Screen Fields
The following information briefly explains each FNB Resource Configuration
Screen field.
Current FDDI Con:
Displays the current connections of the selected module to the
SmartSwitch 9000 FNB.
Config ID
Displays an identification number that is automatically assigned to each
configuration.
FDDI Connections
Displays all possible connections of the selected module to the
SmartSwitch 9000 FNB.
Changing the Current FNB Connection
To change the current FNB connection:
1. Use the arrow keys to highlight the desired FDDI connection.
2. Press the Return key.
3. The connection you selected appears in the Current FDDI Con: field.
4. Use the arrow keys to highlight SAVE, then press the Return key.
The message “SAVED OK” appears. This message indicates that the FNB
connection you selected has been implemented. If you exit without saving, the
message “NOT SAVED -- PRESS SAVE TO KEEP CHANGES” appears, and
the FNB connection you selected will not be implemented.
5. Use the arrow keys to highlight RETURN , then press the Return key.

9A426-01/9A426-02 Module Specific Information
6
ConnectionTable Screen
The 9A426-01/9A426-02 Connection Table Screen (Figure 2), displays the
currently configured connections on the module.
Figure 2. 9A426-01/9A426-02 ConnectionTable Screen
SmartSwitch 9000 Local Management
9A426-02 Connection Table
Module Name: 9A426-02 Firmware Revision: 01.00.01
Slot Number: 5 BOOTPROM Revision: 01.01.01
ATM Port Current Connections: 2ELAN:
VPI VCI Encapsulation Type AAL Type
0 0005 Other 5
0 0016 Other 5
ELAN: ADD/DELETE
PORT #: 1EXIT ENTRY RETURN

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9A426-01/9A426-02 Module Specific Information
ConnectionTable Screen Fields
The following information briefly explains each Connection Table Screen field.
ATM Port Current Connections
Number of virtual circuits that are currently open for this port.
ELAN:
Name of the ELAN to which this client is joined.
VPI
Displays the Virtual Path Identifier number of the listed PVC or SVC.
VCI
Displays the Virtual Channel Identifier number of the listed PVC or SVC.
EncapsulationType
Displays the method used to encapsulate data at the ATM Adaptation Layer 5
(AAL5) for each connection. The 9A426-01 and 9A426-02 ATM Modules support
the following methods of encapsulation:
• VC Mux 802.3 LANE ( default )
VC Based Multiplexed 802.3 LAN Emulation. This is the encapsulation type
used when the connection is set up via SVCs. These happen automatically in
the network with no user intervention.
• VC Mux Bridged 802.3
VC Based Multiplexing for bridged protocols. You can choose this
encapsulation type for PVCs to do bridging.
For more detailed information about this field, see the description for the ELAN
Name: field on page 13.
NOTE

9A426-01/9A426-02 Module Specific Information
8
• LLC Encapsulation
Logical Link Control for Bridged Protocols. You can choose this encapsulation
type for PVCs. You cannot use this encapsulation type for SVCs.
LLC Encapsulation inserts an LLC SNAP header for each legacy LAN
network type that is being encapsulated onto ATM. LLC Encapsulation is
desirable when it is not feasible for a larger number of VCs to be supported,
due to ATM device capacity limitations or other outside factors.
• Other
This encapsulation type is for reserved connections that are defaults built into
most (if not all) ATM LANE 1.0 compliant devices. In other words, they are
neither configured by hand nor set up dynamically.
AALType
Displays the type of ATM adaptation layer (AAL) used on this VCC. The AAL
divides the user information into segments suitable for packaging into series of
ATM cells. The AAL types are:
• AAL3/4
• AAL5 ( default )
ELAN: (Modifiable)
Selects the ELAN for which connections are to be displayed.
To select another ELAN, use the arrow keys to highlight the ELAN : field (bottom
left corner of the screen), then press the Space Bar .
PORT #: (Toggle)
Selects a specific ATM port.
To select another port (if applicable), use the arrow keys to highlight the PORT # :
field (bottom left corner of the screen), then press the Space Bar .
Displaying the Add/Delete Entry Screen
To display the Add/Delete Entry Screen, use the arrow keys to highlight
ADD/DELETE ENTRY, then press the Return key.