Configuring Jumbo Frame Support; Enabling Loopback Detection On An Ethernet Interface - HP HSR6800 Configuration Manual

Step
4. Set the multicast suppression
threshold ratio.
5. Set the unknown unicast
suppression threshold ratio.

Configuring jumbo frame support

An Ethernet interface might receive some frames larger than the standard Ethernet frame size (called
"jumbo frames") during high-throughput data exchanges such as file transfers. Usually, an Ethernet
interface discards jumbo frames. With jumbo frame support enabled, the interface can process frames
larger than the standard Ethernet frame size yet within the specified range.
In interface configuration mode (Ethernet interface view or port group view), you can set the length of
jumbo frames that are allowed to pass through Ethernet interfaces, as follows:
If you execute the command in Ethernet interface view, the configuration takes effect only on the
•
interface.
• If you execute the command in port group view, the configuration takes effect on all ports in the port
group.
To configure jumbo frame support in interface view or port group view:
Step
1. Enter system view.
2. Configure jumbo frame
support.

Enabling loopback detection on an Ethernet interface

If a device receives a packet that it sent, a loop has occurred to the device. Loops might cause broadcast
storms, which degrade network performance. You can use this feature to detect whether a loop has
occurred.
Single-port loopback occurs when an interface receives a packet that it sent and the receiving interface
is the same as the sending interface, as shown in
Command
multicast-suppression { ratio | pps
max-pps | kbps max-kbps }
unicast-suppression { ratio | pps
max-pps | kbps max-kbps }
Command
system-view
•
(Method 1) In port group
view:
a. port-group manual
port-group-name
b. jumboframe enable
[ value ]
•
(Method 2) In Ethernet
interface view:
c. interface interface-type
interface-number
d. jumboframe enable
[ value ]
Figure
11
Remarks
Optional.
By default, multicast traffic is
allowed to pass through an
interface.
Optional.
By default, unknown unicast traffic
is allowed to pass through an
interface.
Remarks
N/A
Use one of the methods.
By default, the device allows jumbo
frames within the specified length to
pass through all Layer 2 Ethernet
interfaces.
2.