From: Dave Gingrich (Dave@xxxxxxx)
Date: Tue Jun 27 2000 - 18:34:01 GMT-3
Dialer maps require that the called router know what router is calling it.
If you are not running pap or chap authentication to exchange the hostname
of the router, it relies upon Caller ID info. If there is no dial string in
the map statement on one end, there nothing to tie the incoming call to the
map and you will not have connectivity, even if the call stays up.
Save yourself grief. Always run authentication on dialer links and rely on
hostnames to identify the far end.
At 14:45 6/26/00 -0400, smaljure@cibernetworks.com wrote:
>Hi all,
>I am trying to get one way ISDN calling to work.
>I have the following scenario....
>
>
>R1-BRI0---TELTONE_ILS_2000-----BRI0-r2
>
>I have a very simple config going...PPP on both sides, no authentication.
>
>I have a dialer string on only one side (R1)
>On the other side I have a dialer map with no number.
>Layer 1 and Layer 2 are active.. on both sides..
>If I do a "sh dialer" on the routers, I see that the call successfully goes
>through, however I do not receive the ping replies..
>If I do a "debug dialer" on R2, it says, "cannot find dial number, cannot
>complete call, go get a life"
>
>HOWEVER,
>If I put in dialer strings on both routers, they can talk to one another.
>If I put in dialer map on both routers with phone numbers, they can talk to
>one another.
>I found out that when I can successfully ping, as in the above case, R1
>places the call on the first B channel and sends the echoes and R2 puts a
>fresh call on its second B channel
>to send the echo replies.
>
>But if R1 already has a B channel open, isn't R2 supposed to just reply on
>the same????
>
>I have got this working several times with real ISDN lines. This is my first
>time with this simultaor. Any gotchchas???
>
>Below are the configs...
>Thanks for your time
>Sanjay
>
>
>
>sh run
>Building configuration...
>
>Current configuration:
>!
>version 11.2
>no service password-encryption
>no service udp-small-servers
>no service tcp-small-servers
>!
>hostname r1
>!
>enable secret 5 $1$FE6P$1pB46PMhaFivO/C/KaSVj0
>!
>ip subnet-zero
>no ip domain-lookup
>isdn switch-type basic-dms100
>!
>interface Loopback0
> ip address 14.0.0.1 255.255.255.0
>!
>interface Ethernet0
> no ip address
> shutdown
>!
> --More-- interface Serial0
> ip address 11.0.0.1 255.255.255.0
> shutdown
> no fair-queue
> clockrate 64000
>!
>interface Serial1
> no ip address
> shutdown
>!
>!
>interface BRI0
> ip address 10.0.0.1 255.255.255.0
> encapsulation ppp
> isdn spid1 0835866101 8358661
> --More-- isdn spid2 0835866301 8358663
> dialer map ip 10.0.0.2 8358662
> dialer-group 1
>!
>no ip classless
>ip route 13.0.0.0 255.255.255.0 10.0.0.2
>!
>dialer-list 1 protocol ip permit
>!
>line con 0
>line aux 0
>line vty 0 4
> password cisco
> login
>!
>end
>
>r1#sh dialer
>
>BRI0 - dialer type = ISDN
>
>Dial String Successes Failures Last called Last status
>8358662 1 0 00:16:52 successful
>0 incoming call(s) have been screened.
>
>BRI0:1 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is idle
>
>BRI0:2 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is idle
>r1#
>r1#ping 10.0.0.2
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
>
>%LINK-3-UPDOWN: Interface BRI0:1, changed state to up.
>RT: network 10.0.0.0 is now variably masked
>RT: add 10.0.0.2/32 via 0.0.0.0, connected metric [0/0]
>%LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to
>up...
>%ISDN-6-CONNECT: Interface BRI0:1 is now connected to 8358662 .
>Success rate is 0 percent (0/5)
>r1#
>r1#
>r1#sh run dialer
>
>BRI0 - dialer type = ISDN
>
>Dial String Successes Failures Last called Last status
>8358662 2 0 00:00:22 successful
>0 incoming call(s) have been screened.
>
>BRI0:1 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is data link layer up
>Dial reason: ip (s=10.0.0.1, d=10.0.0.2)
>Time until disconnect 105 secs
>Connected to 8358662
>
>BRI0:2 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is idle
>r1#
>r1#
>r1#ping 10.0.0.2
>
>Type escape sequence to abort.
>Sending 5, 100-byte ICMP Echos to 10.0.0.2, timeout is 2 seconds:
>.....
>Success rate is 0 percent (0/5)
>r1#
>r1#
>r1#sh int bri 0 1
>BRI0:1 is up, line protocol is up
> Hardware is BRI
> MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
> Encapsulation PPP, loopback not set, keepalive set (10 sec)
> LCP Open
> Open: IPCP, CDPCP
> Last input 00:00:05, output 00:00:05, output hang never
> Last clearing of "show interface" counters never
> Input queue: 0/75/0 (size/max/drops); 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)
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 120 packets input, 1886 bytes, 0 no buffer
> Received 120 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 248 packets output, 15186 bytes, 0 underruns
> 0 output errors, 0 collisions, 7 interface resets
> 0 output buffer failures, 0 output buffers swapped out
> 3 carrier transitions
>r1#
>r1#
>
>
>
>r2#
>r2#
>r2#sh run
>Building configuration...
>
>Current configuration:
>!
>version 11.2
>no service password-encryption
>no service udp-small-servers
>no service tcp-small-servers
>!
>hostname r2
>!
>enable secret 5 $1$f0E1$I9HuoTlJpxtucXeO7W.dB0
>!
>ip subnet-zero
>no ip domain-lookup
>isdn switch-type basic-dms100
>!
>interface Loopback0
> ip address 13.0.0.1 255.255.255.0
>!
>interface Ethernet0
> no ip address
> shutdown
>!
> --More-- interface Serial0
> ip address 11.0.0.2 255.255.255.0
> no fair-queue
>!
>interface Serial1
> no ip address
> shutdown
>!
>interface BRI0
> ip address 10.0.0.2 255.255.255.0
> encapsulation ppp
> isdn spid1 0835866201 8358662
> isdn spid2 0835866401 8358664
> dialer map ip 10.0.0.1 name r1
> dialer-group 1
> no fair-queue
> ppp multilink
>!
>no ip classless
>ip route 14.0.0.0 255.255.255.0 BRI0
>!
>dialer-list 1 protocol ip permit
>!
> --More-- line con 0
>line aux 0
>line vty 0 4
> password cisco
> login
>!
>end
>
>r2#
>r2#
>r2#sh dialer
>
>BRI0 - dialer type = ISDN
>
>Dial String Successes Failures Last called Last status
>0 incoming call(s) have been screened.
>
>BRI0:1 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is data link layer up
>Time until disconnect 64 secs
>
>BRI0:2 - dialer type = ISDN
>Idle timer (120 secs), Fast idle timer (20 secs)
>Wait for carrier (30 secs), Re-enable (15 secs)
>Dialer state is idle
>r2#
>r2#
>r2#
>r2#
>r2#
>r2#sh int bri 0 1
>BRI0:1 is up, line protocol is up
> Hardware is BRI
> MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, rely 255/255, load 1/255
> Encapsulation PPP, loopback not set, keepalive set (10 sec)
> LCP Open, multilink Closed
> Open: IPCP, CDPCP
> Last input 00:00:03, output 00:00:03, output hang never
> Last clearing of "show interface" counters never
> Queueing strategy: fifo
> Output queue 0/40, 0 drops; input queue 0/75, 0 drops
> 5 minute input rate 0 bits/sec, 0 packets/sec
> 5 minute output rate 0 bits/sec, 0 packets/sec
> 757 packets input, 35199 bytes, 0 no buffer
> Received 757 broadcasts, 0 runts, 0 giants, 0 throttles
> 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
> 292 packets output, 4566 bytes, 0 underruns
> 0 output errors, 0 collisions, 7 interface resets
> 0 output buffer failures, 0 output buffers swapped out
> 18 carrier transitions
>r2#
>
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 08:23:43 GMT-3