Information Technology Reference
In-Depth Information
Table16-5 show isdn status for BRI (continued)
Field
Significance
Layer 2 Status:
State =
TEI_ASSIGNED
Check the switchtype setting and SPIDS. The Interface
Specific ISDN switch setting will override the Global
switch setting. The SPID status will indicate whether the
switch accepted the SPIDS with Valid or Invalid.
Contact your service provider to verify the setting
configured on the router.
To change the SPID settings, use the
isdn spid
n
interface
configuration command, where
n
is either 1 or 2,
depending on the channel in question. Use the
no
form of
this command to remove the specified SPID.
isdn spid
n
spid-number [ldn]
no isdn spid
n
spid-number [ldn]
Syntax description
:
•
spid-number—Number identifying the service to
which you have subscribed. This value is assigned by
the ISDN service provider and is usually a 10-digit
telephone number with additional digits.
•
ldn—(Optional) Local directory number (LDN),
which is a seven-digit number assigned by the service
provider. The switch in the incoming setup message
delivers this information. If you do not include the
local directory, access to the switch is permitted, but
the other B channels may not be capable of receiving
incoming calls.
To see the Layer 2 negotiations between the switch and the
router, use the privileged exec command
debug isdn q921
.
The
q921
debugs are documented in the
Debug Command
Reference.
debug
commands rely heavily on CPU
resources, so caution should be used when employing
them.
5200-1#
show isdn status
Global ISDN Switchtype = primary-5ess
ISDN Serial0:23 interface
dsl 0, interface ISDN Switchtype = primary-5ess
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Activated dsl 0 CCBs = 0
The Free Channel Mask: 0x807FFFFF
Total Allocated ISDN CCBs = 0
5200-1#
