{ unknown-unicast-suppression | broadcast-suppression | multicast-suppression | unicast-suppression } cir (VSI-BGP-PW view)

Function

The broadcast-suppression command configures the maximum volume of broadcast traffic that a VSI PW forwards.

The undo broadcast-suppression command restores the default configuration.

The multicast-suppression command configures the maximum volume of multicast traffic that a VSI PW forwards.

The undo multicast-suppression command restores the default configuration.

The unknown-unicast-suppression command configures the maximum volume of unknown unicast traffic that a VSI PW forwards.

The undo unknown-unicast-suppression command restores the default configuration.

The unicast-suppression command configures the maximum volume of unicast traffic that a VSI PW forwards.

By default, unknown unicast, broadcast, unicast, and multicast traffic transmitted over a VSI PW are not suppressed.

Format

{ unknown-unicast-suppression | broadcast-suppression | multicast-suppression } cir cirVal [ cbs cbsVal ]

unicast-suppression cir cirVal [ cbs cbsVal ]

undo { unknown-unicast-suppression | broadcast-suppression | multicast-suppression } [ cir cirVal [ cbs cbsVal ] ]

Parameters

Parameter	Description	Value
cir cirVal	Specifies the committed information rate (CIR), namely, maximum rate at which multicast traffic is forwarded.	The value is an integer ranging from 100 to 4294967295, in kbit/s.
cbs cbsVal	Specifies the Committed Burst Size (CBS), which is the depth of the first token bucket.	The value is an integer ranging from 100 to 4294967295, in bytes. The default value is determined by cir-value: If cir-value is less than 100000 kbit/s, the default value of cbs-value equals cir-value x (1500/8), in bytes. If cir-value is greater than or equal to 100000 kbit/s, the default value of cbs-value equals 100000 x (1500/8), in bytes.

Parameter

Description

Value

cir cirVal

Specifies the committed information rate (CIR), namely, maximum rate at which multicast traffic is forwarded.

The value is an integer ranging from 100 to 4294967295, in kbit/s.

cbs cbsVal

Specifies the Committed Burst Size (CBS), which is the depth of the first token bucket.

The value is an integer ranging from 100 to 4294967295, in bytes.

The default value is determined by cir-value:

If cir-value is less than 100000 kbit/s, the default value of cbs-value equals cir-value x (1500/8), in bytes.
If cir-value is greater than or equal to 100000 kbit/s, the default value of cbs-value equals 100000 x (1500/8), in bytes.

Views

VSI-BGP-PW view, vsi-bgpad-pw view, VSI-LDP-PW view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mac	write

Usage Guidelines

Usage Scenario

If unknown unicast, broadcast, unicast, or multicast traffic mounts on a network, the traffic consumes a great amount of network bandwidth, deteriorating network performance.

To prevent an unknown unicast, broadcast, unicast, or multicast traffic storm, run the { unknown-unicast-suppression | broadcast-suppression | unicast-suppression | multicast-suppression } cir command to restrict the rate of VSI unknown unicast, broadcast, unicast, or multicast traffic sent from PW to PW or from PW to AC. If the unknown unicast, broadcast, unicast, or multicast traffic volume exceeds the cirVal, the system discards the excessive unknown unicast, broadcast, unicast, or multicast traffic.

Example

# Set the CIR to 100 kbit/s and CBS to 18800 bytes for unknown unicast traffic over PW 1 configured with LDP in a VSI.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi 1 static
[*HUAWEI-vsi-1] pwsignal ldp
[*HUAWEI-vsi-1-ldp] vsi-id 100
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1 pw pw1
[*HUAWEI-vsi-1-ldp-pw-pw1] unknown-unicast-suppression cir 100 cbs 18800

# Set the CIR to 100 kbit/s and CBS to 18800 bytes for multicast traffic over PW 1 configured with LDP in a VSI.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi 1 static
[*HUAWEI-vsi-1] pwsignal ldp
[*HUAWEI-vsi-1-ldp] vsi-id 100
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1 pw pw1
[*HUAWEI-vsi-1-ldp-pw-pw1] multicast-suppression cir 100 cbs 18800

# Set the CIR to 100 kbit/s and CBS to 18800 bytes for broadcast traffic over PW 1 configured with LDP in a VSI.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] quit
[*HUAWEI] mpls l2vpn
[*HUAWEI-l2vpn] quit
[*HUAWEI] vsi 1 static
[*HUAWEI-vsi-1] pwsignal ldp
[*HUAWEI-vsi-1-ldp] vsi-id 100
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1
[*HUAWEI-vsi-1-ldp] peer 1.1.1.1 pw pw1
[*HUAWEI-vsi-1-ldp-pw-pw1] broadcast-suppression cir 100 cbs 18800