Albert,
This is an excerpt from the CCO on ISDN troubleshooting issues. It is
apparently n issue with your provider's ISDN switch.
HTH,
Rob H. CCNP, CCDP, CCIE Written, MCSE, CCA
Because the router includes the Channel ID Information Element (DE) in the
ALERTING and the CONNECT messages, the Siemens NI1 switch sends the STATUS
message in accordance with section 6.3.5.2 of the Bellcore SR-NWT-001953
ISDN
Terminal Equipment on Basic Access Interfaces. It is recommended but not
required that the terminal equipment (such as the Cisco router) not include
the Channel ID IE after the CALL_PROC. If the router does include this IE,
the switch is supposed to ignore it and send a STATUS message.
Previously, if you received an unsolicated STATUS message from the switch,
you would perform a call state comparison and if the call states were not
the
same you would release the call. When the call is still in the progressing
call states, the progressing call states will not be equal. How to handle
the
STATUS message under certain cause conditions such as invalid IE or
mandatory
IE missing is an implementation option.
Workaround: If the switch sends a complaining STATUS message about
including optional IEs, allow them to be included and to determine if they
wish to terminate the call. This option is implemented only for call
progressing states four through nine.
Hello group,
I'm having a little trouble with my ISDN config.
Now, this is what I'm getting after a single ping. It looks like it's
telling me "Mandatory IE missing".
Could someone please take a look.
Thanks
Albert
!
interface BRI0
ip address 196.1.1.1 255.255.255.0
no ip directed-broadcast
encapsulation ppp
no ip route-cache
no ip mroute-cache
dialer map ip 196.1.1.2 name RouterB broadcast 2222
dialer-group 1
isdn switch-type basic-ni
ppp authentication chap
ppp multilink
!
no ip classless
!
dialer-list 1 protocol ip permit
!
!
RouterA#ping
Protocol [ip]: ip
Target IP address: 196.1.1.2
Repeat count [5]: 1
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 196.1.1.2, timeout is 2 seconds:
21:05:10: ISDN BR0: TX -> SETUP pd = 8 callref = 0x65
21:05:10: Bearer Capability i = 0x8890
21:05:10: Channel ID i = 0x83
21:05:10: Called Party Number i = 0x80, '2222'
21:05:10: ISDN BR0: RX CONNECT pd = 8 callref = 0xCC
21:05:10: Channel ID i = 0x8A
21:05:10: ISDN BR0: RX DISCONNECT pd = 8 callref = 0x65
21:05:10: .
Success rate is 0 percent (0/1)
RouterA# Cause i = 0x80E034 - Mandatory IE missing
21:05:10: ISDN BR0: RX RELEASE_COMP pd = 8 callref = 0x65
21:05:10: ISDN BR0: RX RELEASE pd = 8 callref = 0xCC
21:05:10: ISDN BR0: RX <- RELEASE_COMP pd = 8 callref = 0x4C
21:05:10: Cause i = 0x8090 - Normal call clearing
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=15265&t=15236
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