Table 1: Default Qos Action - Avaya ERS 5510 Technical Configuration Manual

Filt
is not remark ed by default. However, a policy can still be applied to a trusted port to remark if
required. Not e that only the 802.1p user priority value associated with „well-k nown‟ DS CP
values are remapped by the default trusted polices. The „well-know‟ DSCP values can be
viewed by using the ACLI command „show qos eqressmap‟.
Untrusted Ports
o
Assumes that all traffic coming into the port is suspect. Therefore, the DSCP field of any
traffic that enters the Ethernet Routing S witch 5500 from an Unt rusted Port is re-marked. For
untagged packets, the default classifier is used to change the DS CP. This results in a DS CP
value det ermined by the CoS-t o-DSCP mapping table using the default 802.1p priority of the
interface where the packet is received. For tagged packets, the 802. 1p value is determined
by CoS-to-DS CP mapping table using the best effort DSCP, which is 0.
Unre stri cted Ports
o
Does not assume anything about the origin of the incoming traffic. You may assign an action
to set the DSCP or not to set the DSCP; it's up to you. This allows you to manipulate the
DSCP value based upon the filter criteria, and not upon the point of origin.
The following table displays a summary of the role combination capabilities.
Type of Filter
IP v4 filter criteria
or Layer 2 filt er
criteria matching
IP v4
Classification
Classification identifies the traffic flow that requires QoS management. The traffic flow may be identified
by the Layer 2 or IP content of the frame using any of the elements shown below.

Layer 2 Classifier Elements
o
Source MA C with mask to filter on complete or partial MA C addresses
o
Destination MAC wit h mask to filter on complete or partial MAC addresses
VLAN ID – can be a range
o
o
Tagged or untagged packets
o
EtherType
o
802.1p priority
Filters and QOS Configuration for Ethernet Routing Switch 5500
January 2013

Table 1: Default QoS Action

Action Trusted
Does not
DSCP
change
Updates
based on
IEEE
DSCP
802.1p
mapping
table value
Technical Configuration Guide
Untrusted
Tagged--Updates to 0
(Standard)
Untagged--Updates using
mapping table and port‟s
default value
Updates based on DSCP
mapping table value
avaya.com
Unre stri cted
Does not
change
Does not
change
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