LG-Ericsson iPECS ES-4526G, User Manual

Page: 869 / 1328

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ES-4500G Series
35
R
ATE
L
IMIT
C
OMMANDS
This function allows the network manager to control the maximum rate for
traffic transmitted or received on an interface. Rate limiting is configured
on interfaces at the edge of a network to limit traffic into or out of the
network. Packets that exceed the acceptable amount of traffic are dropped.
Rate limiting can be applied to individual ports or trunks. When an
interface is configured with this feature, the traffic rate will be monitored
by the hardware to verify conformity. Non-conforming traffic is dropped.
rate-limit
This command defines the rate limit for a specific interface. Use this
command without specifying a rate to restore the default rate. Use the no
form to restore the default status of disabled.
S
YNTAX
rate-limit { input | output } [ rate ]
no rate-limit { input | output }
input – Input rate for specified interface
output – Output rate for specified interface
rate – Maximum value in Mbps.
(Range: 64-1000000 kbps for Gigabit Ethernet ports
64-10000000 kbps for 10 Gigabit Ethernet ports)
D
EFAULT
S
ETTING
1000 Mbps
C
OMMAND
M
ODE
Interface Configuration (Ethernet, Port Channel)
C
OMMAND
U
SAGE
Using both rate limiting and storm control on the same interface may lead
to unexpected results. For example, suppose broadcast storm control is set
to 500 pps by the command “switchport broadcast packet-rate 500,” and
the rate limit is set to 20 Mbps by the command “rate-limit input 20" on a
port. Since 20 Mbps is 1/5 of line speed (100 Mbps), the received rate will
actually be 100 pps, or 1/5 of the 500 pps limit set by the storm control
Table 98: Rate Limit Commands
Command Function Mode
rate-limit Configures the maximum input or output rate
for an interface
IC