CCNA Complete Guide 2nd Edition.pdf - Cisco Learning Home

- PPP Encapsulation configuration on RT2:
RT2#conf t
Enter configuration commands, one per line. End with CNTL/Z.
RT2(config)#int s0/0
RT2(config-if)#encapsulation ppp
RT2(config-if)#ip add 10.10.10.2 255.255.255.252
RT2(config-if)#no shut
RT2(config-if)#^Z
RT2#
00:10:10: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up
00:10:13: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed
state to up
RT2#ping 10.10.10.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 36/37/40 ms
RT2#
- Verify the PPP Encapsulation configuration on RT2:
RT2#sh int s0/0
Serial0/0 is up, line protocol is up
Hardware is M4T
Internet address is 10.10.10.2/30
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation PPP, crc 16, loopback not set
Keepalive set (10 sec)
LCP Open
Open: IPCP, CDPCP
--- output omitted ---
- The debug ppp negotiation privileged command displays PPP link establishment and
negotiation information, including LCP and NCP information.
- The debug ppp error privileged command displays the errors related to PPP.
- Serialx is xxxx, line protocol is xxxx
The 1st parameter refers to status of the physical layer (L1). It is up when it receives carrier
detect; while it is down when there is a cable or interface problem (hardware failure).
The 2nd parameter refers to status of the data link layer (L2). It is down when there is a
keepalive, clocking (clock rate), framing (encapsulation type), or authentication (password and
authentication protocol) misconfiguration. Note: Usernames are not case-sensitive.
Note: Both interface ends must be configured with the same keepalive value or setting.
- The clear counters [intf-type intf-num] privileged command clears the statistic counters for
all interfaces or a particular interface.
- The no encapsulation ppp command is equivalent to the encapsulation hdlc command,
as it causes routers to revert back to the default encapsulation type – HDLC.
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Copyright © 2008 Yap Chin Hoong
yapchinhoong@hotmail.com