discovery_routing_switching_chapter_7_en思科網(wǎng)絡(luò)技術(shù)學(xué)院ccna40官方資料-ccnadiscovery-cac建議版discovery_ppt(編輯修改稿)
2024-10-22 16:34 本頁面
【文章內(nèi)容簡介】 int link. ? Link Control Protocol(LCP) options: authentication pression error detection multilink PPP callback 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 25 HDLC and PPP ? Phases of PPP sessions: Linkestablishment Authentication (optional) NCP negotiation 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 26 HDLC and PPP LinkEstablishment Phase ? PPP sends LCP frames to configure and test the data link. LCP frames contain a configuration option field that negotiates options such as maximum transmission unit (MTU), pression, and linkauthentication. If a configuration option is missing, it assumes the default value. ? Optional parameters, such as these, must be plete before the receipt of a configuration acknowledgment frame. Receipt of the configuration acknowledgement frame pletes the LinkEstablishment phase. 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 27 HDLC and PPP Authentication Phase (optional) ? The authentication phase provides password protection to identify connecting routers. Authentication occurs after the two routers agree to the set parameters but before the NCP Negotiation Phase can begin. 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 28 HDLC and PPP NCP Negotiation Phase ? PPP sends NCP packets to choose and configure one or more Network Layer protocols, such as IP or IPX. If LCP closes the link, it informs the Network Layer protocols so that they can take appropriate action. The show interfaces mand reveals the LCP and NCP states. 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 29 Configuring PPP ? Change encapsulation from HDLC to PPP on both ends of link ? Configure desired optional features 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 30 Configuring PPP Verification and troubleshooting mands: ? show interfaces serial 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 31 Configuring PPP Verification and troubleshooting mands: ? show controllers 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 32 Configuring PPP Verification and troubleshooting mands: ? debug serial interface 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 33 Configuring PPP Verification and troubleshooting mands: ? debug ppp 169。 2022 Cisco Systems, Inc. All rights reserved. Cisco Public ITE 1 Chapter 6 34 PPP Authentication ? Password Authentication Protocol (PAP) ? Challenge Handshake Authentication Protocol (CHAP) 169。 2022 Cisco Systems, Inc. All rights
環(huán)評公示相關(guān)推薦
鄂ICP備17016276號-1