From: ccie candidate (ccie1@xxxxxxxxx)
Date: Sat Jul 27 2002 - 14:00:42 GMT-3
guys ;
i have the following setup .
R5----- ------R4
| /
FR | / ISDN
| /
R2
R2 is a hub router in frame relay cloud , where it has two PVCs to each of R4 ,
R5 .
i wanted to backup the connection between (R2 and R4) and the connection (R2 an
d R5) so that if any of the PVCs goes down , R2 will call R4.
i was first montoring the two loopbacks on R4 and R5 by just one dialer watch s
tatement ..when i came to know that dialer watch will never bring up the ISDN u
ntill ALL the routes disappear from the routing table .
then i thought to creat two dialer watches ,one to monitor loopback on R4 and a
nother one to monitor loopback on R5 .
this solution worked for me ( if anyone has different idea please suggest ) how
ever the link was disconnecting from time to time with the following error .
my questions are
1-what the hell is this virtual-access1 interface .
2-is this has anything to do with PPP multilink
3-before both ..having two dialer watch is workable solution ?
4-why the link is disconncting from time to time .
the config of R2 is also posted after the error .
anyone can help please
----------------------------.
R2#
00:41:22: Vi1 DDR: disconnecting call
R2#
00:41:23: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:1, changed state
to down
00:41:23: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, chan
g
ed state to down
00:41:24: BR0:1 DDR: disconnecting call
00:41:24: BR0:1 DDR: Dialer Watch: resetting call in progress
00:41:24: DDR: Dialer Watch: watch-group = 4
00:41:24: DDR: network 172.3.4.4/255.255.255.255 UP,
00:41:24: DDR: primary UP
00:41:24: DDR: Dialer Watch: watch-group = 5
00:41:24: DDR: network 172.3.5.5/255.255.255.255 DOWN,
00:41:24: DDR: primary DOWN
00:41:24: DDR: Dialer Watch: Dial Reason: Secondary of group 5 DOWN
00:41:24: DDR: Dialer Watch: watch-group = 5,
00:41:24: DDR: dialing secondary by dialer map 172.3.5.5 on BR0
00:41:24: BR0 DDR: Attempting to dial 5552000
00:41:24: ISDN BR0: Outgoing call id = 0x8011, dsl 0
00:41:24: ISDN BR0: Event: Hangup call to call id 0x8010 ces = 1
00:41:24: ISDN BR0: process_disconnect(): call id 0x8010, call type is DATA, b_
i
db 0
xB820, ces 1, cause Normal call clearing(0x10)
00:41:24: %ISDN-6-DISCONNECT: Interface BRI0:1 disconnected from 5552000 R4, c
a
ll lasted 121 seconds
00:41:24: ISDN BR0: Event: Call to 5552000 at 64 Kb/s
00:41:24: ISDN BR0: process_bri_call(): call id 0x8011, called_number 5552000,
s
peed 64, call type DATA
00:41:24: CC_CHAN_GetIdleChanbri: dsl 0
00:41:24: Found idle channel B2
00:41:24: ISDN BR0: received HOST_DISCONNECT_ACK call_id 0x8010
00:41:24: ISDN BR0: HOST_DISCONNECT_ACK: call type is DATA
00:41:24: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
00:41:24: BR0:1 DDR: disconnecting call
00:41:24: DDR: Dialer Watch: watch-group = 4
00:41:24: DDR: network 172.3.4.4/255.255.255.255 UP,
00:41:24: DDR: primary UP
00:41:24: DDR: Dialer Watch: watch-group = 5
00:41:24: DDR: network 172.3.5.5/255.255.255.255 DOWN,
00:41:24: DDR: primary DOWN
00:41:24: DDR: primary DOWN
00:41:24: DDR: Dialer Watch: watch-group = 5,
00:41:24: ISDN BR0: received HOST_PROCEEDING call_id 0x8011
00:41:24: ISDN BR0: received HOST_CONNECT call_id 0x8011
00:41:24: %LINK-3-UPDOWN: Interface BRI0:2, changed state to up
00:41:24: BR0:2 DDR: Dialer Watch: resetting call in progress
00:41:24: ISDN BR0: Event: Connected to 5552000 on B2 at 64 Kb/s
00:41:25: %LINK-3-UPDOWN: Interface Virtual-Access1, changed state to up
00:41:25: Vi1 DDR: Dialer statechange to up
00:41:25: Vi1 DDR: Dialer Watch: resetting call in progress
00:41:25: Vi1 DDR: Dialer call has been placed
00:41:25: Vi1 DDR: dialer protocol upR2#
R2#
00:41:26: %LINEPROTO-5-UPDOWN: Line protocol on Interface BRI0:2, changed state
to up
00:41:26: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access1, chan
ged state to up
00:41:30: %ISDN-6-CONNECT: Interface BRI0:2 is now connected to 5552000 R4
--------------------------------
R2 configs
!
interface BRI0
ip address 172.3.30.1 255.255.255.252
encapsulation ppp
dialer idle-timeout 60
dialer map ip 172.3.30.2 name R4 broadcast 5552000
dialer map ip 172.3.4.4 name R4 broadcast 5552000
dialer map ip 172.3.5.5 name R4 broadcast 5552000
dialer load-threshold 190 outbound
dialer watch-group 5
dialer watch-group 4
dialer-group 1
isdn switch-type basic-ni
no cdp enable
ppp authentication chap
ppp multilink
!
access-list 101 deny ip any any
dialer watch-list 4 ip 172.3.4.4 255.255.255.255
dialer watch-list 5 ip 172.3.5.5 255.255.255.255
dialer-list 1 protocol ip list 101
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