From: Jonathan V Hays (jhays@jtan.com)
Date: Mon May 26 2003 - 13:20:10 GMT-3
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#
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2003 - 15:13:48 GMT-3