Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 570)

546 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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MPLS VLL behavior with other features
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The vlan vlan-id parameter specifies the ID of the configured VLAN for which the user wants to clear
the counters.
The ethernet port-id parameter specifies the port ID of the interface for which the user wants to
clear the counters.
The priority pri parameter specifies a priority queue for a particular VLL endpoint for which the user
wants to clear the counters.
MPLS VLL behavior with other features
This section describes the interaction of MPLS VLL with the features sFlow, IFL CAM, and Layer 2
ACLs.
sFlow
sFlow sampling is supported for VLL packets received from customer interfaces. sFlow is not
supported for packets received from MPLS uplinks. The following describes the behavior for sFlow
for VLL packets received from customer endpoints:
• When the endpoint is untagged, the default VLAN ID in the sFlow sample is used for both the
incoming and outgoing VLAN fields in the sFlow sample collection.
• When the endpoint is tagged, the tag is used as both the incoming and outgoing VLAN in the
sFlow sample collection.
• When the endpoint is dual-tagged, 4096 is used as the incoming VLAN to indicate that the
packet is dual-tagged. When the VLL is in raw-mode, the outer VLAN of the packet is used as
the outgoing VLAN ID in the sFlow sample collection. When the VLL is in tagged-mode, the
inner VLAN ID of the packet is used as the outgoing VLAN ID in the sFlow sample collection.
Note that when the endpoint is dual-tagged, the sFlow packet does not contain VLL- or
MPLS-specific information.
Table 87 illustrates the above points.
TABLE 87 Source and destination VLAN in an sFlow sampled VLL packet
Endpoint Source VLAN Destination VLAN
Untagged Default VLAN Default VLAN
Single-tagged Incoming VLAN Incoming VLAN
Dual-tagged 4096 Raw mode: Incoming outer VLAN
Tagged mode: Incoming inner VLAN
IFL CAM
For dual-tagged VLL instances, IFL CAM entries are used for the service lookup. The default system
value for IFL CAM is 8192, which can be modified up to a maximum of 81920 entries using the CLI
command system-max ifl-cam number.