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Configuring VLAN Stacking Services
Profile Attribute
Priority mapping
Priority assignment
A default profile, named "default-sap-profile", is automatically assigned to the SAP at the time the SAP is
created (see
"Configuring a VLAN Stacking Service Access Point" on page
create a new profile to specify different attribute values if the default profile values (see above) are not
sufficient.
The following command provides an example of creating a new SAP profile to specify a different method
for mapping the SVLAN priority value:
-> ethernet-service sap-profile map_pbit priority map-inner-to-outer-p
In this example the map_pbit profile specifies priority mapping of the CVLAN inner tag 802.1p value to
the SVLAN outer tag value. The other attributes in this profile are set to their default values.
To delete a SAP profile, use the no form of the ethernet-service sap-profile command. For example, the
following command deletes the map_pbit profile:
-> no ethernet-service sap-profile map_pbit
Consider the following when configuring a SAP profile:
•
When a profile is created, bandwidth not-assigned and priority not-assigned parameters are not
specified. This means that even if no bandwidth value is specified or the priority is set to fixed, QoS
still allocates switch resources to enforce bandwidth and priority settings for the profile. In addition,
QoS policy rules cannot override the profile bandwidth or priority settings.
•
Use the bandwidth not-assigned and priority not-assigned parameters to prevent the profile from
triggering QoS allocation of switch resources. When a profile is created using these parameters, QoS
policy rules/ACLs are then available to define more custom bandwidth and priority settings for profile
traffic. For example, mapping several inner DSCP/ToS values to the same outer 802.1p value.
•
Egress bandwidth can be configured only for SVLANs.
•
A CVLAN-UNI combination associated with a SAP having egress bandwidth configuration is unique
and it cannot be configured on any other SAP with egress bandwidth configuration.
Use the
show ethernet-service sap-profile
for the switch. This command also displays the attribute values for each profile.
Associating a Profile with a Service Access Point
After a profile is created, it is then necessary to associate the profile with a VLAN Stacking SAP. When
this is done, the current profile associated with a SAP is replaced with the new profile.
The
ethernet-service sap sap-profile
SAP. For example, the following command associates the map_pbit profile to SAP 20:
page 27-18
Command Parameters
map-inner-to-outer-p |
map-dscp-to-outer-p |
fixed
priority not-assigned
command to view a list of profiles that are already configured
command is used to associate a new profile with a VLAN Stacking
OmniSwitch AOS Release 7 Network Configuration Guide
Configuring VLAN Stacking
Description
Determines if the CVLAN (inner tag) 802.1p or
DSCP value is mapped to the SVLAN (outer tag)
802.1p value or if a fixed priority value is used
for the SVLAN 802.1p value. Priority mapping is
set to a fixed rate of zero by default.
Allows QoS policy rules to override profile
attribute values for priority. By default, profile
priority values take precedence and are allocated
additional QoS system resources.
27-14). It is only necessary to
March 2011
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