Filter Policies
Router Configuration Guide 569
Default no isid
Parameters value — Specifies the ISID value, 24 bits as a decimal integer. When just one present identifies a
particular ISID to be used for matching.
Values 0 to 16777215
to higher-value — Identifies a range of ISIDs to be used as matching criteria.
inner-tag
Syntax inner-tag value [vid-mask]
no inner-tag
Context config>filter>mac-filter>entry>match
Description This command configures the matching of the second tag that is carried transparently through the
service. The inner-tag on ingress is the second tag on the frame if there are no service delimiting tags.
Inner tag is the second tag before any service delimiting tags on egress but is dependent in the ingress
configuration and may be set to 0 even in cases where additional tags are on the frame. This allows
matching VLAN tags for explicit filtering or QoS setting when using default or null encapsulations.
The inner-tag is not applicable in ingress on dot1Q SAPs. The inner-tag may be populated on egress
depending on the ingress SAP type.
On QinQ SAPs of null and default that do not strip tags inner-tag will contain the second tag (which is
still the second tag carried transparently through the service.) On ingress SAPs that strip any tags,
inner-tag will contain 0 even if there are more than 2 tags on the frame.
The optional vid-mask is defaulted to 4095 (exact match) but may be specified to allow pattern
matching. The masking operation is ((value and vid-mask) = = (tag and vid-mask)). A value of 6 and
a mask of 7 would match all VIDs with the lower 3 bits set to 6.
For QoS the VID type cannot be specified on the default QoS policy.
The default vid-mask is set to 4095 for exact match.
outer-tag
Syntax outer-tag value [vid-mask]
no outer-tag
Context config>filter>mac-filter>entry>match
Description This command configures the matching of the first tag that is carried transparently through the service.
Service delimiting tags are stripped from the frame and outer tag on ingress is the first tag after any
service delimiting tags. Outer tag is the first tag before any service delimiting tags on egress. This
allows matching VLAN tags for explicit filtering or QoS setting when using default or null
encapsulations.
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