MES53xx, MES33xx, MES23xx Ethernet Switch Series 10
Private VLAN
(light version)
Enables isolation of devices located in the same broadcast domain within the
entire L2 network. Only two port operation modes are implemented—
Promiscuous and Isolated (isolated ports cannot exchange traffic).
Spanning Tree Protocol is a network protocol that ensures loop-free network
topology by converting networks with redundant links to a spanning tree topology.
Switches exchange configuration messages using frames in a specific format and
selectively enable or disable traffic transmission to ports.
IEEE 802.1w Rapid
spanning tree protocol
Rapid STP (RSTP) is the enhanced version of the STP that enables faster
convergence of a network to a spanning tree topology and provides higher
stability.
ERPS (Ethernet Ring
Protection Switching)
protocol
Protocol used for increasing stability and reliability data transmission network
having ring topology. It is realized by reducing recovery network time in case of
breakdown. Recovery time does not exceed 1 second. It is much less than
network changeover time in case of spanningtree protocols usage.
VLAN is a group of switch ports that form a single broadcast domain. The switch
supports various packet classification methods to identify the VLAN they belong
to.
Supporting OAM
protocol
(Operation, Administration,
and Maintenance, IEEE
802.3ah)
Ethernet OAM (Operation, Administration, and Maintenance), IEEE 802.3ah –
functions of data transmission channel level corresponds to channel status
monitor protocol. The protocol uses data blocks of OAM (OAMPDU) to transmit
information about the channel status between connected Ethernet devices. Both
devices must support standard IEEE 802.3ah.
GARP VLAN registration protocol dynamically add/removes VLAN groups on the
switch ports. If GVRP is enabled, the switch identifies and then distributes the
VLAN inheritance data to all ports that form the active topology.
Distribution to VLAN groups is performed according to the ingress ports. This
solution ensures that only one VLAN group is used on each port.
IEEE 802.1Q is an open standard that describes the traffic tagging procedure for
transferring VLAN inheritance information. It allows multiple VLAN groups to be
used on one port.
Link aggregation with
LACP
(Link Aggregation
Control Protocol)
The LACP enables automatic aggregation of separate links between two devices
(switch-switch or switch-server) in a single data communication channel.
The protocol constantly monitors whether link aggregation is possible; in case one
link in the aggregated channel fails, its traffic will be automatically redistributed to
functioning components of the aggregated channel.
LAG group creation
(Link Aggregation
Group)
The device allows for link group creation. Link aggregation, trunking or IEEE
802.3ad is a technology that enables aggregation of multiple physical links into
one logical link. This leads to greater bandwidth and reliability of the backbone
'switch-switch' or 'switch-server' channels. There are three types of balancing—
based on MAC addresses, IP addresses or destination port (socket).
A LAG group contains ports with the same speed operating in full-duplex mode.
Allows you to identify voice traffic by OUI (Organizationally Unique Identifier—first
24 bits of the MAC address). If the MAC table of the switch contains a MAC
address with VoIP gateway or IP phone OUI, this port will be automatically added
to the voice VLAN (identification by SIP or the destination MAC address is not
supported).
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