Access Control List Statistics
Use the Access Control List Statistics page to display the statistical information about the packets
forwarded or discarded by the port that matches the configured rules within an
. Each ACL rule is
configured to match one or more aspects of traffic on the network. When a packet matches the
conditions in a rule, the counter associated with the rule gets incremented, until it reaches the rollover
value of the counter. ACL counters do not interact with DiffServ policies or Policy-based Routing
counters.
To display this page, click
QoS
>
Access Control Lists
>
Statistics
in the navigation menu.
Use the buttons to perform the following tasks:
•
To clear the hit count for one or more configured rules within an ACL, select the rule entry and click
Clear Rule Counter
. You must confirm the action before the hit count is cleared for the selected
rule(s).
•
To clear the hit count for an ACL, select the ACL ID from the ACL Identifier menu and click
Clear ACL
Counters
. You must confirm the action before the hit count is cleared for the selected ACL.
•
To clear the hit count for an ACL type, select the type from the ACL Type menu and select All from
the ACL Identifier menu and then click
Clear ACL Counters
. You must confirm the action before the
hit count is cleared for the selected ACL type.
Table 305: Access Control List Statistics Fields
Field
Description
ACL Type
The type of ACL. The ACL type determines the criteria that can be used to match
packets. The type also determines which attributes can be applied to matching
traffic. IPv4 ACLs classify Layer 3 and Layer 4 IPv4 traffic, IPv6 ACLs classify
Layer 3 and Layer 4 IPv6 traffic, and MAC ACLs classify Layer 2 traffic.
The ACL types are as follows:
•
IPv4 Standard – Match criteria is based on the source address of the IPv4
packets.
•
IPv4 Extended – Match criteria can be based on the source and destination
addresses, source and destination Layer 4 ports, and protocol type of the
IPv4 packets.
•
IPv4 Named – Match criteria is the same as IPv4 Extended ACLs, but the ACL
ID can be an alphanumeric name instead of a number.
•
IPv6 Named – Match criteria can be based on information including the
source and destination IPv6 addresses, source and destination Layer 4 ports,
and protocol type within the IPv6 packets.
•
Extended MAC – Match criteria can be based on the source and destination
MAC addresses, 802.1p user priority, VLAN ID, and EtherType value within the
Ethernet frames.
ACL Identifier
A list of ACL IDs that exist on the system for a given ACL type. To view the
rule(s) within an ACL, you must select the ID of the ACL from the list. The ACL
rules are not displayed when option
All
is selected. Option
All
lets you clear
the hit count for an ACL type.
Sequence Number
The number that indicates the position of a rule within the ACL.
Action
The action to take when a packet or frame matches the criteria in the rule:
•
Permit – The packet or frame is forwarded.
•
Deny – The packet or frame is dropped.
Configuring Quality of Service
ExtremeSwitching 200 Series: Administration Guide
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