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PPP の練習

2023/01/14に公開約13,700字

本エントリについて

Dynagen、Dynamips を使って、PPP を練習します。
Dynagen、Dynamips の利用環境はすでに整っているものとします。

参考

https://www.infraexpert.com/study/wan16.html

直結

r1#show controllers s1/0
M4T: show controller:
PAS unit 0, subunit 0, f/w version 1-45, rev ID 0x2800001, version 1
idb = 0x66626A84, ds = 0x66627B2C, ssb=0x66627EE8
Clock mux=0x0, ucmd_ctrl=0x1C, port_status=0x7B
Serial config=0x8, line config=0x200
maxdgram=1608, bufpool=78Kb, 120 particles
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
line state: up
cable type : V.11 (X.21) DCE cable, received clockrate 2015232

base0 registers=0x3D000000, base1 registers=0x3D002000
mxt_ds=0x66BA4FE4, rx ring entries=78, tx ring entries=128
rxring=0xF7CA0E0, rxr shadow=0x6662E54C, rx_head=40
txring=0xF7CA3A0, txr shadow=0x6662E928, tx_head=45, tx_tail=45, tx_count=0
throttled=0, enabled=0
halted=0, last halt reason=0
Microcode fatal errors=0
rx_no_eop_err=0, rx_no_stp_err=0, rx_no_eop_stp_err=0
rx_no_buf=0, rx_soft_overrun_err=0, dump_err= 0, bogus=0, mxt_flags=0x0
tx_underrun_err=0, tx_soft_underrun_err=0, tx_limited=1(2)
tx_fullring=0, tx_started=51, mxt_flush_count=0
rx_int_count=40, tx_int_count=54
r2#show controllers s1/1
M4T: show controller:
PAS unit 1, subunit 1, f/w version 1-45, rev ID 0x2800001, version 1
idb = 0x666857E8, ds = 0x66686890, ssb=0x66686C4C
Clock mux=0x0, ucmd_ctrl=0x1C, port_status=0x7B
Serial config=0x8, line config=0x200
maxdgram=1608, bufpool=78Kb, 120 particles
     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
line state: up
cable type : V.11 (X.21) DCE cable, received clockrate 2015232

base0 registers=0x3D000000, base1 registers=0x3D002000
mxt_ds=0x672F42E0, rx ring entries=78, tx ring entries=128
rxring=0xF7DC520, rxr shadow=0x6668D2B0, rx_head=45
txring=0xF7DC7E0, txr shadow=0x6668D68C, tx_head=45, tx_tail=45, tx_count=0
throttled=0, enabled=0
halted=0, last halt reason=0
Microcode fatal errors=0
rx_no_eop_err=0, rx_no_stp_err=0, rx_no_eop_stp_err=0
rx_no_buf=0, rx_soft_overrun_err=0, dump_err= 0, bogus=0, mxt_flags=0x0
tx_underrun_err=0, tx_soft_underrun_err=0, tx_limited=1(2)
tx_fullring=0, tx_started=45, mxt_flush_count=0
rx_int_count=45, tx_int_count=47
r2#show int s1/1
Serial1/1 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.254/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:07, output 00:00:04, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     57 packets input, 5616 bytes, 0 no buffer
     Received 27 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     57 packets output, 5589 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     2 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r1#show int s1/0
Serial1/0 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.253/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation HDLC, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:02, output 00:00:05, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     71 packets input, 6541 bytes, 0 no buffer
     Received 41 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     82 packets output, 7799 bytes, 0 underruns
     0 output errors, 0 collisions, 2 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     3 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r1#show ip int bri
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            10.2.0.254      YES NVRAM  up                    up
FastEthernet0/1            unassigned      YES NVRAM  administratively down down
Serial1/0                  172.16.0.253    YES NVRAM  up                    up
Serial1/1                  172.16.1.254    YES NVRAM  up                    down
Serial1/2                  unassigned      YES NVRAM  administratively down down
Serial1/3                  unassigned      YES NVRAM  administratively down down

r1#ping 172.16.0.253

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.253, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/37/44 ms

r1#ping 172.16.0.254

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/18/20 ms
r2#ping 172.16.0.253

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.253, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 16/20/28 ms

r2#ping 172.16.0.254

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 28/35/40 ms

r2#show ip int bri
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            10.2.1.254      YES NVRAM  up                    up
FastEthernet0/1            unassigned      YES NVRAM  administratively down down
Serial1/0                  172.16.2.253    YES NVRAM  up                    down
Serial1/1                  172.16.0.254    YES NVRAM  up                    up
Serial1/2                  unassigned      YES NVRAM  administratively down down
Serial1/3                  unassigned      YES NVRAM  administratively down down

PPP

CHAP認証

r1(config)#username r2 password cisco
r1(config)#int s1/0
r1(config-if)#encapsulation ppp
r1(config-if)#ppp authentication chap
r2(config)#username r1 password cisco
r2(config)#int s1/1
r2(config-if)#encapsulation ppp
r2(config-if)#ppp authentication chap
r2#show int s1/1
Serial1/1 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.254/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Open
  Open: IPCP, CDPCP, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:52, output 00:00:02, output hang never
  Last clearing of "show interface" counters 00:45:58
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     4624 packets input, 93325 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     4650 packets output, 91524 bytes, 0 underruns
     0 output errors, 0 collisions, 137 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     137 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r1#show int s1/0
Serial1/0 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.253/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Open
  Open: IPCP, CDPCP, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:11, output 00:00:02, output hang never
  Last clearing of "show interface" counters 00:52:57
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     4716 packets input, 96670 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     4793 packets output, 99842 bytes, 0 underruns
     0 output errors, 0 collisions, 182 interface resets
     9 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     182 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r2#ping 172.16.0.253

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.253, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/17/24 ms

r2#ping 172.16.0.254

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 24/36/40 ms

PAP認証

r1(config)#int s1/0
r1(config-if)#no ppp authentication chap
r1(config-if)#ppp pap sent-username r1 password cisco
r1(config-if)#ppp authentication pap
r2(config)#int s1/1
r2(config-if)#no ppp authentication chap
r2(config-if)#shut
r2(config-if)#ppp authentication pap
r2(config-if)#no shut
r2#show int s1/1
Serial1/1 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.254/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Open
  Open: IPCP, CDPCP, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:52, output 00:00:02, output hang never
  Last clearing of "show interface" counters 00:45:58
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     4624 packets input, 93325 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     4650 packets output, 91524 bytes, 0 underruns
     0 output errors, 0 collisions, 137 interface resets
     0 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     137 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r1#show int s1/0
Serial1/0 is up, line protocol is up
  Hardware is M4T
  Internet address is 172.16.0.253/24
  MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation PPP, LCP Open
  Open: IPCP, CDPCP, crc 16, loopback not set
  Keepalive set (10 sec)
  Restart-Delay is 0 secs
  CRC checking enabled
  Last input 00:00:06, output 00:00:00, output hang never
  Last clearing of "show interface" counters 00:47:43
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: weighted fair
  Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations  0/1/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 1158 kilobits/sec
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     4620 packets input, 91920 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     4694 packets output, 94684 bytes, 0 underruns
     0 output errors, 0 collisions, 181 interface resets
     9 unknown protocol drops
     0 output buffer failures, 0 output buffers swapped out
     181 carrier transitions     DCD=up  DSR=up  DTR=up  RTS=up  CTS=up
r2#ping 172.16.0.254

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/37/44 ms

r2#ping 172.16.0.253

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.253, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/17/24 ms

まとめ

Dynagen、Dynamips を使って、PPP を練習しました。
https://www.linemo.jp/process/apn/android/ のようにして CHAPはいつまでも生き残りますね。

GitHubで編集を提案

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