From: Jonathan V Hays (jhays@jtan.com)
Date: Mon May 26 2003 - 16:58:44 GMT-3
Oops! I cut and pasted the wrong config for R6 under CHAP. These are the
actual CHAP configs:
R5:
username r6 password 0 cisco
!
interface BRI0
ip address 10.1.1.5 255.0.0.0
encapsulation ppp
dialer map ip 10.1.1.6 name r6 broadcast 4082222222
dialer load-threshold 1 either
dialer-group 1
isdn switch-type basic-ni
isdn spid1 40811111111
isdn spid2 40811111112
ppp authentication chap
ppp multilink
!
dialer-list 1 protocol ip permit
R6:
username r5 password 0 cisco
!
interface BRI0
ip address 10.1.1.6 255.0.0.0
encapsulation ppp
dialer map ip 10.1.1.5 name r5 broadcast 4082222222
dialer load-threshold 1 outbound
dialer-group 1
isdn switch-type basic-ni
isdn spid1 40822222221
isdn spid2 40822222222
ppp authentication chap
ppp multilink
!
dialer-list 1 protocol ip permit
----Thanks to Dmitry Volkov's sharp eyes.
Jonathan
-----Original Message----- From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Jonathan V Hays Sent: Monday, May 26, 2003 12:20 PM To: ccielab@groupstudy.com Subject: multilink and ISDN simulators
I can ping across my VConsole ISDN simulator with a simple multilink configuration on my lab setup. The second channel (BRI0:2) comes up after a few seconds, still pinging fine.
However, with CHAP, the ping brings up the first line but BRI0:2 (the second line) will NOT come up. I tried an extended ping and large packet size (1444 bytes) hoping that would increase the load, but the second line still never came up. I would not think this extended ping would even be necessary with dialer load-threshold set to 1, especially since the second line came up very quickly without CHAP.
I've included both configs below. There is nothing configured on either router except ISDN. Both routers are 2503's running IOS Version 12.1(5)T14.
Either I'm missing something or I'm starting to suspect that these ISDN simulator vendors don't do a very good job programming multilink into the simulators. My lab study partner has a TelTone ILS and getting multilink to work with the TelTone ISDN simulator is hit or miss - sometimes it works, sometimes it doesn't.
Any ideas?
-Jonathan
= = = = =
*** Multilink without CHAP:
R5: interface BRI0 ip address 10.1.1.5 255.0.0.0 encapsulation ppp dialer map ip 10.1.1.6 broadcast 4082222222 dialer load-threshold 10 either dialer-group 1 isdn switch-type basic-ni isdn spid1 40811111111 isdn spid2 40811111112 ppp multilink ! dialer-list 1 protocol ip permit ! R6: interface BRI0 ip address 10.1.1.6 255.0.0.0 encapsulation ppp dialer map ip 10.1.1.5 broadcast 4081111111 dialer load-threshold 10 either dialer-group 1 isdn switch-type basic-ni isdn spid1 40822222221 isdn spid2 40822222222 ppp multilink ! dialer-list 1 protocol ip permit = = = = = = r6#ping 10.1.1.5
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.1.1.5, timeout is 2 seconds: ..!!! Success rate is 60 percent (3/5), round-trip min/avg/max = 36/36/36 ms r6# 01:26:49: %LINK-3-UPDOWN: Interface BRI0:1, changed state to up 01:26:51: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up 01:26:52: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up 01:26:52: %ISDN-6-CONNECT: Interface BRI0:1 is now connected to 4081111111 r5 01:26:52: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state to up 01:26:52: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, changed state to up r6#ping 10.1.1.5
Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.1.1.5, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 28/29/32 ms r6# 01:26:55: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:2, changed state to up r6# 01:26:58: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to 4081111111 r5 r6#sh dialer
BRI0 - dialer type = ISDN
Dial String Successes Failures Last DNIS Last status 4081111111 9 0 00:00:14 successful 0 incoming call(s) have been screened. 0 incoming call(s) rejected for callback.
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 multilink member Dial reason: ip (s=10.1.1.6, d=10.1.1.5) Connected to 4081111111 (r5)
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 multilink member Connected to 4081111111 (r5) r6#sh ppp multilink
Virtual-Access1, bundle name is r5 Dialer interface is BRI0 0 lost fragments, 0 reordered, 0 unassigned 0 discarded, 0 lost received, 1/255 load 0xA received sequence, 0xA sent sequence Member links: 2 (max not set, min not set) BRI0:1 BRI0:2 r6#sh in bri0:1 | include LCP LCP Open, multilink Open r6#sh in bri0:2 include LCP LCP Open, multilink Open r6# = = = = = =
*** Add CHAP:
R5: username r6 password 0 cisco ! interface BRI0 ip address 10.1.1.5 255.0.0.0 encapsulation ppp dialer map ip 10.1.1.6 name r6 broadcast 4082222222 dialer load-threshold 1 either dialer-group 1 isdn switch-type basic-ni isdn spid1 40811111111 isdn spid2 40811111112 ppp authentication chap ppp multilink ! dialer-list 1 protocol ip permit ! username r6 password 0 cisco ! interface BRI0 ip address 10.1.1.5 255.0.0.0 encapsulation ppp dialer map ip 10.1.1.6 name r6 broadcast 4082222222 dialer load-threshold 1 outbound dialer-group 1 isdn switch-type basic-ni isdn spid1 40811111111 isdn spid2 40811111112 ppp authentication chap ppp multilink ! dialer-list 1 protocol ip permit
Only one line up, after 1320 packets, size 1444 bytes:
r4_ts#6 [Resuming connection 6 to r2503b ... ] !!!!!!!. Success rate is 99 percent (1320/1321), round-trip min/avg/max = 372/373/472 ms r6#sh dialer
BRI0 - dialer type = ISDN
Dial String Successes Failures Last DNIS Last status 4081111111 2 1 00:09:45 successful 0 incoming call(s) have been screened. 0 incoming call(s) rejected for callback.
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 multilink member Dial reason: ip (s=10.1.1.6, d=10.1.1.5) Connected to 4081111111 (r5)
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 r6#sh ppp multi
Virtual-Access1, bundle name is r5 Dialer interface is BRI0 0 lost fragments, 0 reordered, 0 unassigned 0 discarded, 0 lost received, 111/255 load 0x0 received sequence, 0x0 sent sequence Member links: 1 (max not set, min not set) BRI0:1 r6#sh in bri0:1 | include LCP LCP Open, multilink Open r6#sh in bri0:2 | include LCP LCP Closed, multilink Closed r6#
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