Authorized IP configuration···································································································································· 406

Overview ·········································································································································································406

Configuring authorized IP··············································································································································406 Authorized IP configuration example ···························································································································407

Authorized IP configuration example ·····················································································································407

ACL configuration ··················································································································································· 410

ACL overview ··································································································································································410

Introduction to IPv4 ACL···········································································································································410

Effective period of an ACL·······································································································································411

ACL step·····································································································································································412

Configuring an ACL························································································································································412

Configuration task list···············································································································································412

Configuring a time range ········································································································································413

Creating an IPv4 ACL···············································································································································414

Configuring a rule for a basic IPv4 ACL ················································································································414

Configuring a rule for an advanced IPv4 ACL ······································································································416

Configuring a rule for an Ethernet frame header ACL··························································································419

Configuration guidelines················································································································································421

QoS configuration··················································································································································· 422

Introduction to QoS ························································································································································422

Networks without QoS guarantee ··························································································································422

QoS requirements of new applications ··················································································································422

Congestion: causes, impacts, and countermeasures ····························································································422

End-to-end QoS ·························································································································································424

Traffic classification ··················································································································································424

Packet precedences ··················································································································································425

Queue scheduling·····················································································································································427

Line rate ·····································································································································································429

Priority mapping ·······················································································································································430

Introduction to priority mapping tables ··················································································································431

QoS configuration ··························································································································································432

Configuration task lists ·············································································································································432

Creating a class ························································································································································434

Configuring match criteria·······································································································································435

Creating a traffic behavior ······································································································································437

Configuring traffic mirroring and traffic redirecting for a traffic behavior·························································438

Configuring other actions for a traffic behavior····································································································439

Creating a policy······················································································································································440

Configuring classifier-behavior associations for the policy··················································································440 Applying a policy to a port ·····································································································································441

Configuring queue scheduling on a port ···············································································································442

Configuring line rate on a port ·······························································································································443

Configuring priority mapping tables ······················································································································444

Configuring priority trust mode on a port ··············································································································445

Configuration guidelines················································································································································447

ACL/QoS configuration examples ························································································································ 448

ACL/QoS configuration example ·································································································································448

PoE configuration ···················································································································································· 458

PoE overview···································································································································································458

Advantages ·······························································································································································458

Composition ······························································································································································458

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