Siemens S223 - Manual (Page 25)

User Manual UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5
A50010-Y3-C150-2-7619 25
DHCP
The hiD 6615 S223/S323 supports DHCP (Dynamic Host Control Protocol) Server that
automatically assigns IP address to clients accessed to network. That means it has IP
address pool, and operator can effectively utilize limited IP source by leasing temporary
IP address. In layer 3 network, DHCP request packet can be sent to DHCP server via
DHCP relay and Option 82 function.
Spanning Tree Protocol (STP)
To prevent loop and preserve backup route in layer 2 network, the hiD 6615 S223/S323
supports STP (802.1D). Between STP enabled switches, a root bridge is automatically
selected and the network remains in tree topology. But the recovery time in STP is very
slow (about 30 seconds), RSTP (Rapid Spanning Tree Protocol) is also provided. IEEE
802.1W defines the recovery time as 2 seconds. If there is only one VLAN in the network,
traditional STP works. However, in more than one VLAN network, STP cannot work per
VLAN. To avoid this problem, the hiD 6615 S223/S323 supports Multiple Spanning Tree
Protocol (MSTP).
Link Aggregation (Trunking)
The hiD 6615 S223/S323 aggregates several physical interfaces into one logical port
(aggregate port). Port trunk aggregates interfaces with the standard of same speed, same
duplex mode, and same VLAN ID. According to IEEE 802.3ad, the hiD 6615 S223/S323
can configure maximum 8 aggregate ports and up to 12 trunk groups.
LACP
The hiD 6615 S223/S323 supports Link Aggregation Control Protocol (LACP), complying
with IEEE 802.3ad, which aggregates multiple links of equipments to use more enlarged
bandwidth.
System Management based on CLI
It is easy for users who administer system by using telnet or console port to configure the
functions for system operating through CLI. CLI is easy to configure the needed functions
after looking for available commands by help menu different with UNIX.
Broadcast Storm Control
Broadcast storm control is, when too much of broadcast packets are being transmitted to
network, a situation of network timeout because the packets occupy most of transmit ca-
pacity. The hiD 6615 S223/S323 supports broadcast and multicast storm control, which
disuses flooding packet, that exceed the limit during the time configured by user.