HP (Hewlett-Packard) 445946-001 ユーザーズマニュアル

 

 

 

Quality of Service

 

 

 

  

 

89

 

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Packet Format 

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Ethernet format (eth2, SNAP, LLC)  

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Ethernet tagging format  

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Egress port packets 

Note that the egress port ACL will not match a broadcast, multicast, unknown unicast, or Layer 3 

packet. The egress port ACL will not match packets if the destination port is a trunk member.  

Summary of ACL actions 

Actions determine how the traffic is treated. The HP 10GbE switch QoS actions include the following:  

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Pass or Drop 

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Re-mark a new 

DiffServ

 Code Point (DSCP) 

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Re-mark the 802.1p field 

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Set the COS queue 

Understanding ACL precedence 

Each ACL has a unique precedence level, based on its number. When an incoming packet matches the 

highest precedence ACL, the ACL’s configured action takes place. The other assigned ACLs also are 

considered, in order of precedence.  
ACLs are divided into Precedence Groups, as shown in the following table.  

Precedence Group 1 

ACL 1 – ACL 128 

Low 

Precedence Group 2 

ACL 129 – ACL 256 

 

Precedence Group 3 

ACL 257 – ACL 384 

High 

 

 

 Precedence Groups are not related to ACL Groups.  

Each Precedence Group has its own precedence level, such that Precedence Group 2 has a higher 

precedence level than Precedence Group 1. Within each Precedence Group, higher-numbered ACLs 

receive higher precedence, so that the lowest-numbered ACL has the lowest precedence level, and the 
highest-numbered ACL has the highest precedence level. However, the other ACLs within the Precedence 

Group have an unspecified precedence level, as follows: 
ACL 1 = lowest precedence level within Precedence Group 1 

ACL 2 = unspecified precedence level within Precedence Group 1 
ACL 3 = unspecified precedence level within Precedence Group 1 

... 

ACL 126 = unspecified precedence level within Precedence Group 1 

ACL 127 = unspecified precedence level within Precedence Group 1 
ACL 128 = highest precedence level within Precedence Group 1