H3C S9500 Series Operation Manual page 867

Operation Manual – MPLS VPLS
H3C S9500 Series Routing Switches
rate limitation to be 200, then the actual is 192, three times of 64. The actually
supported rate limitation ranges from 64 kbps to 2,097,152 kbps (included), and if the
value you set is above 2,097,152 kbps, no rate limitation is performed. In the instance,
the part of traffic beyond this bandwidth restriction is discarded by the system.
Perform the following configuration in VSI view to configure VPN rate limitation:
Configure VPN rate limitation
By default, the VPN rate limitation is 102,400 kbps.
II. Configuring VPN broadcast suppression percentage
Use the broadcast-restrain command to configure the VPN broadcast suppression
percentage, which is in the range of 0 to 100. You cannot set the percentage to 0. In the
VSI, the part of broadcast traffic (including broadcast, multicast, and unknown unicast)
beyond the suppression percentage is discarded.
Perform the following configuration in VSI view to configure VPN broadcast
suppression percentage:
Configure VPN broadcast suppression percentage
By default, VPN broadcast suppression percentage is 5%.
III. Configuring packet MTU
Use the mtu command to specify the maximum transmission unit (MTU) value for user
access packets of this VPLS instance, which is in the range of 128 to 8,192. This MTU
value is also the MTU value for PW.
Perform the following configuration in VSI view to configure packet MTU:
Configure packet MTU for the VPLS instance
Restore the default MTU
By default, MTU is 1,500 Bytes.
IV. Configuring CoS
Use the command to map user priority 802.1Q COS to PSN COS (PSN: Public
Switching Network; COS: Class Of Service). When configuring the CoS mapping level,
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1-16
Chapter 1 VPLS Configuration
Use the command...
bandwidth bw-limit
Use the command...
broadcast-restrain percent
Use the command...
mtu mtu
undo mtu