Multi-Stream Analysis
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6.2.3. MPLS Selection
MPLS traffic carry one or various 4-byte headers. Each of these headers is made up of
a 20-bit MPLS label, a 3-bit traffic class identifier and other fields (See section 4.2.2).
Priority codepoint
match
Enables selection by IEEE 802.1Q/p priority bits in the cur-
rent filter. The value configured here is used to determine
which frames are allowed to pass through the filter and which
ones are blocked. The available configuration values for this
field are the same that for the VID match field.
Priority codepoint This setting contains a 3-bit identifier that constitutes the pri-
ority value to be matched in the incoming traffic.
It is possible to match the S-VLAN or the C-VLAN priority
codepoints through separated entries in the filtering menu.
For single-tagged frames it is assumed that the frame does
not contain S-VLAN priority codepoint field and therefore
configuration is done through the C-VLAN menu.
Drop-eligible indica-
tor match
Enables selection by the S-VLAN drop-eligible indicator in
the current filter. The value configured here is used to deter-
mine which frames are allowed to pass through the filter and
with ones are blocked. The available configuration values for
this field are the same that for the VID match field.
Drop-eligible indica-
tor
This is a single bit field that is used to signal which frames
have precedence when the node has to drop some informa-
tion due to congestion or other causes.
The Drop-eligible indicator is defined only for the S-VLAN tag
of double-tagged frames.For this reason is only available for
S-VLAN matching rules.
Table 6.2: C-VLAN and S-VLAN Selection
Field Description
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