MES53xx, MES33xx, MES23xx Ethernet Switch Series
11
Selective Q-in-Q
Allows you to assign external VLAN SPVLAN (Service Provider’s VLAN) based on
configured filtering rules by internal VLAN numbers (Customer VLAN). Selective Q-
in-Q allows you to break down subscriber’s traffic into several VLANs, change
SPVLAN stamp for the packet in the specific network section.
2.2.4
Layer 3 Protocol Tunneling (L3PT) Features
Table 2.4 lists Layer 3 functions (OSI Layer 3).
Table 2.4. Layer 3 Features description (Layer 3)
BootP and DHCP clients
(Dynamic Host Configuration
Protocol)
The devices can obtain IP address automatically via the BootP/DHCP.
Static IP routes
The switch administrator can add or remove static entries into/from the routing
table.
Address Resolution
Protocol
ARP maps the IP address and the physical address of the device. The mapping is
established on the basis of the network host response analysis; the host address is
requested by a broadcast packet.
Routing Information
Protocol
(RIP)
The dynamic routing protocol that allows routers to get new routing information
from the neighbour routers. This protocol detects optimum routes on the basis of
hops count data.
Supported by MES5324, MES3324F switches
IGMP Proxy function
IGMP Proxy is a feature that allows simplified routing of multicast data between
networks. IGMP is used for routing management.
OSPF protocol (Open
Shortest Path First)
A dynamic routing protocol that is based on a link-state technology and uses
Dijkstra's algorithm to find the shortest route. OSPF protocol distributes
information on available routes between routers in a single autonomous system.
Supported by MES5324, MES3324F switches
Virtual Router
Redundancy Protocol
(VRRP)
VRRP is designed for backup of routers acting as default gateways. This is achieved
by joining IP interfaces of the group of routers into one virtual interface which will
be used as the default gateway for the computers of the network.
Protocl
IndependentMulticast
(PIM)
The Protocol-Independent Multicast protocols for IP networks were created to
address the problem of multicast routing. PIM relies on traditional routing
protocols (such as, Border Gateway Protocol) rather than creates its own network
topology. It uses unicast routing to verify RPF. Routers perform this verification to
ensure loop-free forwarding of multicast traffic.
Supported by MES5324, MES3324F switches
2.2.5
QoS Features
Table 2.5 lists the basic quality of service features.
Table 2.5. Basic quality of service features
Priority queues support
The switch supports egress traffic prioritization with queues for each port. Packets
are distributed into queues by classifying them by various fields in packet headers.
802.1p class of service
support
802.1p standard specifies the method for indicating and using frame priority to
ensure on-time delivery of time-critical traffic. 802.1p standard defines 8 priority
