Newsgroup: it.comp.reti.cisco
Titolo: Problemi con cisco1751 e ISDN

ciao a tutti,
ho perso il sonno a causa di questo:
configurado due router 1750 (ios 12.0) affinchè si chiamano tra loro via
isdn, quando cade la linea principale, tutto funziona alla perfezione;
sostituendo i due router con dei 1751 (ios12.2) nuovi di zecca, succede
che la connessione isdn funziona la prima volta, e in caso di altre
interruzioni della linea principale, la connessione isdn non viene piu
stabilita.
Il file usato config è lo stesso!!!!!
Se riavvio i router1751, o eseguo "#clear interface bri 1/0"  tutto funziona
... ovviamente per una volta!!!
avete idee ? (link, doc ....pietà per me:), altro...)
ringrazio in ogni caso anticipatamente!!!! ora vado a dormire!!!
Il debug riporta i seguenti errori
Global ISDN Switchtype = basic-net3
ISDN BRI1/0 interface
        dsl 0, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVATING
    Layer 2 Status:
        TEI = 72, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x80000003
    Number of L2 Discards = 1, L2 Session ID = 80
    Total Allocated ISDN CCBs = 0
pippo#
-----------------------
pippo#sh is s
Global ISDN Switchtype = basic-net3
ISDN BRI1/0 interface
        dsl 0, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVE_ErrorInd
    Layer 2 Status:
        TEI = 76, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x80000003
    Number of L2 Discards = 1, L2 Session ID = 238
    Total Allocated ISDN CCBs = 0
------------------------
pippo#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname pippo
!
enable password 7 1526252Dxxxxxxx
!
username pippo password 7 0330752xxxxxxxxx
username pluto password 7 152625xxxxxxxxxx
ip subnet-zero
no ip domain-lookup
isdn switch-type basic-net3
!
!
!
interface Ethernet0
 description connected to Ethernet
 ip address 192.1.0.1 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet1
 description connected to PONTE_RADIO
 ip address 11.0.0.1 255.255.255.0
 no ip directed-broadcast
!
interface BRI0
 description connected to BACKUP
 no ip address
 no ip directed-broadcast
 encapsulation ppp
 dialer rotary-group 1
 isdn switch-type basic-net3
 no cdp enable
!
interface Dialer1
 description connected to BACKUP
 ip address 10.0.254.1 255.255.255.0
 no ip directed-broadcast
 encapsulation ppp
 dialer in-band
 dialer map ip 10.0.254.252 name pluto  0444444444
 dialer load-threshold 10 either
 dialer-group 1
 no cdp enable
 ppp authentication chap
 ppp multilink
!
router eigrp 12
 redistribute rip
 network 10.0.0.0
 network 11.0.0.0
 network 192.1.0.0
 no auto-summary
!
router rip
 version 2
 redistribute eigrp 12
 network 10.0.0.0
 network 11.0.0.0
 network 192.1.0.0
 no auto-summary
!
ip classless
ip route xxx.xxx.1.0 255.255.255.0 10.0.254.252 100
ip route 192.0.0.0 255.255.255.0 10.0.254.252 100
!
dialer-list 1 protocol ip permit
!
line con 0
 exec-timeout 0 0
 password 7 107A273xxxxxxxxx
 login
 transport input none
line vty 0 4
 password 7 122D2B3xxxxxxxxx
 login
!
end

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