UMN:CLI User Manual
SURPASS hiD 6615 S223/S323 R1.5
236 A50010-Y3-C150-2-7619
8.6 Flood Guard
Flood-guard limits number of packets, how many packets can be transmitted, in config-
ured bandwidth, whereas Rate limit controls packets through configuring width of band-
width, which packets pass through. This function prevents receiving packets more than
configured amount without enlarging bandwidth.
<Rate Limit> <Flood Guard>
Bandwidth
Control
bandwidth
Configure Rate Limit on port
1
2
3
n
: :
n+1
n+2
Configure Flood-guard to
allow packets as many as ‘n’
per a second
‘n’ packets
allowed for
a second
Packets
over thrown
away
Fig. 8.30 Rate Limit and Flood Guard
8.6.1 Configuring Flood-Guard
To configure the number of packets, which can be transmitted in a second, use the follow-
ing command.
Command Mode Description
mac-flood-guard PORTS <1-
2000000>
Limits the number of packets which can be transmitted
to the port for 1 second.
no mac-flood-guard PORTS
Bridge
Clears the configured Flood Guard.
To display a configuration of flood guard, use the following command.
Command Mode Description
show mac-flood-guard [macs] Bridge Shows the configured Flood Guard.
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