ELTEX MES1000 User Manual

MES1000, MES2000 Ethernet Switches 93
Ethernet interface configuration mode commands (interface range), port group interface
Command line request in Ethernet interface, port group interface configuration mode appears as
follows:
console# configure
console(config)# interface {gigabitethernet gi_port| fastethernet
fa_port|port-channel group}
console(config-if)#
Table 5.78 —Ethernet interface configuration mode commands, interface group
Command
Value/Default value
Action
loopback-detection enable
-/disabled
Enable loopback detection mechanism for the port.
no loopback-detection
enable
Restore the default value.
EXEC mode commands
Command line request in EXEC mode appears as follows:
console#
Table 5.79 —EXEC mode commands
Command
Value
Action
show loopback-detection
[gigabitethernet gi_port |
fastethernet fa_port |
port-channel group]
gi_port: (1..3/0/1..28);
fa_port: (1..3/0/1..24);
group: (1..8)
Show the state of loopback-detection mechanism.
- gi_port— Gigabit Ethernet interface number
- fa_port—Fast Ethernet interface number
- group—channel group
5.16.5 STP protocol family (STP, RSTP, MSTP)
The main task of STP (Spanning Tree Protocol) is to convert Ethernet network with multiple links
into tree-like loop-free topology. Switches exchange configuration messages, using the special format
frames, and selectively enable or disable traffic transmission to ports.
Rapid STP (RSTP) is the enhanced version of STP protocol that enables faster network conversion to
the tree-like topology and provides higher stability.
Multiple STP (MSTP) is the most recent implementation of STP protocol, that support VLAN
utilization. Each instance may contain multiple VLAN groups. However, MSTP protocol has a drawback—all
MSTP-operating switches should have the same VLAN group configuration.
Multiprocess STP mechanism is designed for creation of independent STP/RSTP/MSTP trees on
device ports. State changes of a separate tree will not affect the state of other trees, that will allow to
increase the network stability and reduce the tree rebuild time in case of failures. During the
configuration, it is important to eliminate the possibility of loop formation for member ports of the
different trees. For isolated tree processing, the separate process is created for each tree in the system.
The process matches the device ports that belong to the tree.
Maximum allowed quantity of MSTP instances is given in Table 2.9.
5.16.5.1 STP, RSTP protocol configuration
Global configuration mode commands

ELTEX MES1000 Specifications

General

Brand	ELTEX
Model	MES1000
Category	Switch
Language	English