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fragment
Syntax
fragment {true | false}
no fragment
Context
config>qos>sap-ingress>ip-criteria>entry>match
Description
Platforms Supported:7210 SAS-K.
This command configures fragmented or non-fragmented IP packets as a SAP QoS policy match criterion.
The no form of this command removes the match criterion.
Default
fragment false
Parameters
true — Configures a match on all fragmented IP packets. A match will occur for all packets that have either
the MF (more fragment) bit set OR have the Fragment Offset field of the IP header set to a non-zero
value.
false — Configures a match on all non-fragmented IP packets. Non-fragmented IP packets are packets that
have the MF bit set to zero and have the Fragment Offset field also set to zero.
ip-prec
Syntax
ip-prec ip-prec-value [ip-prec-mask]
no ip-prec
Context
config>qos>sap-ingress>ip-criteria>entry>match
config>qos>sap-ingress>ipv6-criteria>entry>match
Description
Platforms Supported:7210 SAS-D and 7210 SAS-E.
This command defines a specific IP Precedence value that must be matched to perform the associated
classification actions. If an ingress packet on the SAP where the SAP ingress QoS policy is applied to
matches the specified IP Precedence value, the actions associated with this entry are taken.
The ip-prec-value is derived from the most significant three bits in the IP header ToS byte field (precedence
bits). The three precedence bits define 8 Class-of-Service (CoS) values commonly used to map packets to
per-hop Quality-of-Service (QoS) behavior. The precedence bits are also part of the newer DiffServ Code
Point (DSCP) method of mapping packets to QoS behavior. The DSCP uses the most significant six bits in
the IP header ToS byte and so overlaps with the precedence bits.
Both IP precedence and DSCP classification rules are supported. A match entry cannot match on both IP
DSCP and IP precedence values. In other words, user can use either IP DSCP or IP precedence match in a
match entry but not both. The software blocks configuration of ip-precedence match if ip-dscp is configured
already. The converse is also true. A single policy having multiple match entries can have entries such that
some of them match IP DSCP and some others match IP precedence. The order of the entry determines the
priority of the match.
The no form of the command removes the IP Precedence match criterion.
Parameters
ip-prec-value — The ip-prec-value is a required parameter that specifies the unique IP header ToS byte
7210 SAS D, E, K OS Quality of Service Guide
Operational Commands
Page 321
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