3.3.2.8 Lab - instructor Configuring Basic PPP with Authentication - ILM

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Lab – Configuring Basic PPP with Authentication ____________________________________________________________________________________ Branch1(config)# interface s0/0/0 Branch1(config-if)# encapsulation hdlc d. Observe the debug PPP messages on the Branch1 router. The serial connection has terminated, and the line protocol is down. The route to 10.1.1.2 (Central) has been removed from the routing table. Jun 20 02:29:50.295: Se0/0/0 PPP DISC: Lower Layer disconnected Jun 20 02:29:50.295: PPP: NET STOP send to AAA. Jun 20 02:29:50.299: Se0/0/0 IPCP: Event[DOWN] State[Open to Starting] Jun 20 02:29:50.299: Se0/0/0 IPCP: Event[CLOSE] State[Starting to Initial] Jun 20 02:29:50.299: Se0/0/0 CDPCP: Event[DOWN] State[Open to Starting] Jun 20 02:29:50.299: Se0/0/0 CDPCP: Event[CLOSE] State[Starting to Initial] Jun 20 02:29:50.29 Branch1(config-if)#9: Se0/0/0 LCP: O TERMREQ [Open] id 7 len 4 Jun 20 02:29:50.299: Se0/0/0 LCP: Event[CLOSE] State[Open to Closing] Jun 20 02:29:50.299: Se0/0/0 PPP: Phase is TERMINATING Jun 20 02:29:50.299: Se0/0/0 Deleted neighbor route from AVL tree: topoid 0, address 10.1.1.2 Jun 20 02:29:50.299: Se0/0/0 IPCP: Remove route to 10.1.1.2 Jun 20 02:29:50.299: Se0/0/0 LCP: Event[DOWN] State[Closing to Initial] Jun 20 02:29:50.299: Se0/0/0 PPP: Phase is DOWN Branch1(config-if)# Jun 20 02:30:17.083: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down Jun 20 02:30:17.083: %OSPF-5-ADJCHG: Process 1, Nbr 209.165.200.225 on Serial0/0/0 from FULL to DOWN, Neighbor Down: Interface down or detached e. Observe the debug PPP messages on the Central router. The Central router continues to attempt to establish a connection with Branch1 as indicated by the debug messages. When the interfaces are unable to establish a connection, the interfaces go back down again. Furthermore, OSPF cannot establish an adjacency with its neighbor due to the mismatched serial encapsulation. Jun 20 02:29:50.296: Se0/0/0 PPP: Sending cstate DOWN notification Jun 20 02:29:50.296: Se0/0/0 PPP: Processing CstateDown message Jun 20 02:29:50.296: Se0/0/0 PPP DISC: Lower Layer disconnected Jun 20 02:29:50.296: PPP: NET STOP send to AAA. Jun 20 02:29:50.296: Se0/0/0 IPCP: Event[DOWN] State[Open to Starting] Jun 20 02:29:50.296: Se0/0/0 IPCP: Event[CLOSE] State[Starting to Initial] Jun 20 02:29:50.296: Se0/0/0 CDPCP: Event[DOWN] State[Open to Starting] Jun 20 02:29:50.296: Se0/0/0 CDPCP: Event[CLOSE] State[Starting to Initial] Jun 20 02:29:50.296: Se0/0/0 LCP: O TERMREQ [Open] id 2 len 4 Jun 20 02:29:50.296: Se0/0/0 LCP: Event[CLOSE] State[Open to Closing] Jun 20 02:29:50.296: Se0/0/0 PPP: Phase is TERMINATING Jun 20 02:29:50.296: Se0/0/0 Deleted neighbor route from AVL tree: topoid 0, address 10.1.1.1 Jun 20 02:29:50.296: Se0/0/0 IPCP: Remove route to 10.1.1.1 Jun 20 02:29:50.296: %OSPF-5-ADJCHG: Process 1, Nbr 192.168.1.1 on Serial0/0/0 from FULL to DOWN, Neighbor Down: Interface down or detached Jun 20 02:29:50.296: Se0/0/0 LCP: Event[DOWN] State[Closing to Initial] Jun 20 02:29:50.296: Se0/0/0 PPP: Phase is DOWN © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 9 of 26
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Lab – Configuring Basic PPP with Authentication Jun 20 02:29:52.296: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down .Jun 20 02:29:52.296: Se0/0/0 PPP: Sending cstate UP notification © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 10 of 26
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