R3721-F3210-F3171-HP High-End Firewalls Network Management Command Reference-6PW101

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• the MTU of an Ethernet interface or subinterface is 1500 bytes.
• The MTU value of the 10GE interface on the interface module of the box type firewall is in the range
of 46 to 1560 bytes.
• The 10 GE interface on the inline card of the firewall module supports jumbo frame, and the MTU
value of the interface is in the range of 46 to 9216 bytes.
NOTE:
A
s the size of MTU decreases, the number of fra
g
ments
g
rows. When settin
g
MTU for an interface, you
should consider QoS queue len
g
ths (for example, the default FIFO queue len
g
th is 75) to avoid a too small
MTU causing packet drop in QoS queuing. To achieve the best result, you can tune MTU with the mtu
command or QoS queue lengths with the qos fifo queue-length command.
Examples
# Set the MTU to 1430 bytes for the Layer 3 Ethernet interface GigabitEthernet 0/1.
<Sysname> system-view
[Sysname] interface Gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] mtu 1430
# Set the MTU to 1400 bytes for the Layer 3 Ethernet subinterface GigabitEthernet 0/1.1.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1.1
[Sysname-GigabitEthernet0/1.1] mtu 1400
promiscuous
Syntax
promiscuous
undo promiscuous
View
Layer 3 Ethernet interface view
Parameters
None
Description
Use promiscuous to configure a Layer 3 Ethernet interface to operate in promiscuous mode.
Use undo promiscuous to cancel the promiscuous operating mode.
By default, a Layer 3 Ethernet interface does not operate in promiscuous mode.
Examples
# Configure GigabitEthernet 0/1 to operate in promiscuous mode.
<Sysname> system-view
[Sysname] interface gigabitethernet 0/1
[Sysname-GigabitEthernet0/1] promiscuous