3.2 Xpress ring
Xpress Ring enables networks to recover from link failure within 50 ms. Unlike Jet Ring, however,
it needs some network configuration efforts. The user must assign two ring ports for each switch
in the ring. The user must also assign the “arbiter” switch, which will decide if it is necessary
to activate the backup path. For Xpress Ring, any switch can be the arbiter – just remember
that the arbiter switch must be part of the ring. In addition to rerouting the transmission within
50 ms, the arbiter switch will issue an alarm when a link failure occurs. The user will then be
informed of the failure and will be able to fix the problem and reconfigure if required.
4 configuration
For advanced management capabilities, the onboard management agent provides ClI
(command line interface) and menu-driven interface configuration programs. These programs
can be accessed by a direct or modem connection to the console port on the front panel (out-
of-band), or by a Telnet connection over the network (in-band).
The management agent is based on SNMP (Simple Network Management Protocol). This
SNMP agent permits the switch to be managed from any PC in the network by using in-band
management software. The management agent also includes an embedded HTTP Web agent
that can be accessed using a standard Web browser from any network computer.
This switch gives you flexibility to access and manage it using any or all three of the methods below:
• ClI via the console port to initially set IP parameters (with added details in
section 4.4
);
• Menu-driven configurations via Telnet;
• Internet browser interface
The administration console and Web browser interfaces are embedded in the switch software
and can be used immediately after setup.
4.1 cli Management via the console Port
Prior to accessing the switch’s onboard agent via a network connection, configure it with a
valid IP address, subnet mask and default gateway using an out-of-band connection or the
BooTP protocol.
After configuring the switch’s IP parameters, you can access the onboard
configuration program from anywhere within the attached network or via the Internet.
The onboard configuration program can be accessed using Telnet from any computer attached
to the network. It can also be managed from any computer using a Web browser (Internet
Explorer 4.0 or above, or Netscape Navigator 4.0 or above).
Access the switch via a terminal emulator (such as HyperTerminal) attached to the console
port. The console port is set at the factory with the following default CoM port properties.
Configure your own terminal to match:
• Baud rate: 38,400
• Data size: 8 bits
• Parity: None
•
Stop bits: 1
• Flow control: None
NOTE:
Ensure that the terminal or PC you are using to make this connection is configured to
match the above settings; otherwise, the connection will not work. A console port cable is
provided with the switch to connect the PC’s COM port with the switch’s serial console (RJ-45)
port. (See
appendix a
in
Specifications
if necessary for cable pin assignment details.)
10
CONFIGURATION
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