PPP 抓包分析
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R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#default int s2/2 Interface Serial2/2 set to default configuration R2(config)# R2(config)#interface Serial2/2 R2(config-if)# R2(config-if)# ip address 202.100.33.2 255.255.255.0 R2(config-if)# R2(config-if)# encapsulation ppp R2(config-if)# R2(config-if)# ppp authentication pap R2(config-if)# R2(config-if)#end R2# *Aug 22 17:26:51.895: %SYS-5-CONFIG_I: Configured from console by console *Aug 22 17:26:52.160: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to down R2# *Aug 22 17:26:52.163: Se2/2 PPP: Using default call direction *Aug 22 17:26:52.163: Se2/2 PPP: Treating connection as a dedicated line *Aug 22 17:26:52.163: Se2/2 PPP: Session handle[25000053] Session id[83] R2# *Aug 22 17:27:06.299: Se2/2 PAP: I AUTH-REQ id 1 len 12 from "aaa" *Aug 22 17:27:06.299: Se2/2 PAP: Authenticating peer aaa *Aug 22 17:27:06.300: Se2/2 PPP: Sent PAP LOGIN Request *Aug 22 17:27:06.300: Se2/2 PPP: Received LOGIN Response PASS *Aug 22 17:27:06.307: Se2/2 PAP: O AUTH-ACK id 1 len 5 *Aug 22 17:27:06.307: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/2, changed state to up R2# *Aug 22 17:27:06.328: IP ARP: sent rep src 202.100.23.3 aabb.cc00.0211, dst 202.100.23.3 ffff.ffff.ffff Ethernet1/1 R2#sh ip route 202.100.23.3 Routing entry for 202.100.23.3/32 Known via "connected", distance 0, metric 0 (connected, via interface) Routing Descriptor Blocks: * directly connected, via Serial2/2 Route metric is 0, traffic share count is 1 R2#ping 202.100.23.3 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 202.100.23.3, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 10/22/47 ms R2# R3(config)#interface Serial3/3 R3(config-if)# R3(config-if)# ip address 202.100.23.3 255.255.255.0 R3(config-if)# R3(config-if)# encapsulation ppp R3(config-if)# R3(config-if)# ppp pap sent-username aaa password bbb R3(config-if)# R3(config-if)#end *Aug 22 17:27:06.270: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/3, changed state to down *Aug 22 17:27:06.271: Se3/3 PPP: Using default call direction *Aug 22 17:27:06.271: Se3/3 PPP: Treating connection as a dedicated line *Aug 22 17:27:06.271: Se3/3 PPP: Session handle[EC000010] Session id[16] *Aug 22 17:27:06.296: Se3/3 PPP: No authorization without authentication *Aug 22 17:27:06.296: Se3/3 PAP: Using hostname from interface PAP *Aug 22 17:27:06.296: Se3/3 PAP: Using password from interface PAP *Aug 22 17:27:06.296: Se3/3 PAP: O AUTH-REQ id 1 len 12 from "aaa" *Aug 22 17:27:06.309: Se3/3 PAP: I AUTH-ACK id 1 len 5 R3(config-if)#end R3# *Aug 22 17:27:06.309: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/3, changed state to up R3# *Aug 22 17:27:07.807: %SYS-5-CONFIG_I: Configured from console by console R3#
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