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What are the differences between ACL software and ACL hardware?

Created: Apr 3, 2020 01:46:04Latest reply: Apr 3, 2020 02:20:02 453 4 0 0 0
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Hello,

I don't know much about the difference between ACL software and ACL hardware.

So, can you explain it to me?

Thanks!

OLT SeriesALC

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Chenxintao
Admin Created Apr 3, 2020 01:51:00

Hello, friend!


Currently, the device supports the following ACL implementation modes: 


Software ACL: matches packets exchanged with the local device (packets that must be sent to the CPU for processing), such as the ACL referenced by FTP, TFTP, Telnet, SNMP, HTTP, routing protocols, and multicast protocols.  


Hardware-based ACL: applies to all packets (generally forwarded data packets) and delivers hardware-based ACL resources to match the ACLs of packets, such as the ACL referenced in the traffic policy, ACL-based simplified traffic policy, user group, and outer tag adding function.


The main difference between the two modes is that they process different types of packets.  


The former is implemented by software. The latter is implemented by hardware. Matching packets using the former consumes CPU resources.


Thank you!

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Recommended answer

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Unicef
MVE Created Apr 3, 2020 02:01:56

First, software ACLs are executed at the software level, whereas hardware ACLs are executed at the chip level.
By default, software ACLs have a hidden deny action.
For hardware ACLs, if no rule is specified, forwarding is based on system entries.

https://forum.huawei.com/enterprise/en/corpus-2969.html
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Chenxintao
Chenxintao Admin Created Apr 3, 2020 01:51:00

Hello, friend!


Currently, the device supports the following ACL implementation modes: 


Software ACL: matches packets exchanged with the local device (packets that must be sent to the CPU for processing), such as the ACL referenced by FTP, TFTP, Telnet, SNMP, HTTP, routing protocols, and multicast protocols.  


Hardware-based ACL: applies to all packets (generally forwarded data packets) and delivers hardware-based ACL resources to match the ACLs of packets, such as the ACL referenced in the traffic policy, ACL-based simplified traffic policy, user group, and outer tag adding function.


The main difference between the two modes is that they process different types of packets.  


The former is implemented by software. The latter is implemented by hardware. Matching packets using the former consumes CPU resources.


Thank you!

View more
  • x
  • convention：
(1) (0)
3#
Unicef
Unicef MVE Created Apr 3, 2020 02:01:56

First, software ACLs are executed at the software level, whereas hardware ACLs are executed at the chip level.
By default, software ACLs have a hidden deny action.
For hardware ACLs, if no rule is specified, forwarding is based on system entries.

https://forum.huawei.com/enterprise/en/corpus-2969.html
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  • x
  • convention：
(0) (0)
4#
user_40397843
user_40397843 Created Apr 3, 2020 02:18:52

Posted by Unicef at 2020-04-03 02:01First, software ACLs are executed at the software level, whereas hardware ACLs are executed at the c ...

Thank  friend's answer.

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user_40397843
user_40397843 Created Apr 3, 2020 02:20:02

Posted by Chenxintao at 2020-04-03 01:51 Hello, friend!Currently, the device supports the following ACL implementation modes: Software ACL: ...
Thanks!
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