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PRI Controller Resets and Calls re-establishing

I am experiencing controller resets

%CONTROLLER-5-UPDOWN: Controller E1 1/0, changed state to down

It recovers almost immediately (not sure if it is a carrier problem yet). The disturbing thing is that the dialer at the distant end has to be manually reset for the link to recover.

The calls at the end that has the reset are dropped and then attempt to re-establish.

The incoming calls at the far end stay up hence giving busy tone when the calls are re-attempted.

--- Controller Reset end ---

controller E1 1/0

pri-group timeslots 1-31

interface Serial1/0:15

no ip address

encapsulation ppp

ip route-cache flow

dialer pool-member 1

no snmp trap link-status

isdn switch-type primary-net5

ppp authentication chap callin

interface Dialer1

description --- Link to Cairns ---

ip address 10.34.36.2 255.255.255.252

encapsulation ppp

no ip route-cache

no ip mroute-cache

load-interval 30

dialer pool 1

dialer remote-name cairns_coen

dialer idle-timeout 300 either

dialer fast-idle 5

dialer enable-timeout 5

dialer string 0740402600

dialer caller 740402600 callback

dialer load-threshold 125 either

dialer max-call 6

dialer-group 2

no snmp trap link-status

ppp authentication chap callin

ppp chap hostname coen_cairns

ppp multilink

ppp multilink fragment-delay 10

ppp multilink links maximum 6

ppp multilink links minimum 1

ODN01COE1NR01#show controllers e1

E1 1/0 is up.

Applique type is Channelized E1 - balanced

No alarms detected.

alarm-trigger is not set

Framing is CRC4, Line Code is HDB3, Clock Source is Line.

Data in current interval (486 seconds elapsed):

0 Line Code Violations, 0 Path Code Violations

0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs

Total Data (last 24 hours)

1 Line Code Violations, 0 Path Code Violations,

0 Slip Secs, 6 Fr Loss Secs, 1 Line Err Secs, 0 Degraded Mins,

0 Errored Secs, 0 Bursty Err Secs, 6 Severely Err Secs, 0 Unavail Secs

--- Receiving side that has to have a dialer reset --

controller E1 1/0

pri-group timeslots 1-31

interface Serial1/0:15

no ip address

encapsulation ppp

ip route-cache flow

dialer pool-member 1

no snmp trap link-status

isdn switch-type primary-net5

ppp authentication chap callin

interface Dialer1

description --- Link to Coen ---

ip address 10.34.36.1 255.255.255.252

encapsulation ppp

ip route-cache flow

no ip mroute-cache

load-interval 30

dialer pool 1

dialer remote-name coen_cairns

dialer idle-timeout 300 either

dialer fast-idle 5

dialer enable-timeout 30

dialer string 0740835444

dialer caller 740835444

dialer hold-queue 20

dialer max-call 6

dialer-group 2

no snmp trap link-status

ppp authentication chap

ppp chap hostname cairns_coen

ppp multilink

ppp multilink fragment-delay 10

ppp multilink links maximum 6

ppp multilink links minimum 1

ppp multilink interleave

1 REPLY
Bronze

Re: PRI Controller Resets and Calls re-establishing

See if increasing the 'dialer enable-timeout' value of 5 on the calling side to some higher value helps.

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