R2511-HP MSR Router Series Interface Configuration Guide(V5)

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If you set a traffic suppression threshold for an Ethernet interface that belongs to a port group in both
Ethernet interface view and port group view, the threshold configured last takes effect.
MSR93X routers do not support multicast storm suppression.
To set storm suppression thresholds on one or multiple Ethernet interfaces:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter Ethernet interface view
or port group view.
• Enter Ethernet interface view:
interface interface-type
interface-number
• Enter port group view:
port-group manual
port-group-name
Use one of the commands.
To configure storm suppression on
an Ethernet interface, enter
Ethernet interface view.
To configure storm suppression on
a group of Ethernet interfaces,
enter port group view.
3. Set the broadcast suppression
threshold ratio.
broadcast-suppression { ratio |
pps max-pps }
Optional.
By default, broadcast traffic is
allowed to pass through an
interface.
4. Set the multicast suppression
threshold ratio.
multicast-suppression { ratio | pps
max-pps }
Optional.
By default, multicast traffic is
allowed to pass through an
interface.
5. Set the unknown unicast
suppression threshold ratio.
unicast-suppression { ratio | pps
max-pps }
Optional.
By default, unknown unicast traffic
is allowed to pass through an
interface.
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 global configuration mode (system view) or 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 system view, the configuration takes effect on all Layer 2 Ethernet
interfaces.
• 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.
A device supports either the global configuration mode or interface configuration mode, not both,
depending on the device model.
To configure jumbo frame support in system view: