Cisco 1604 - Manual (Page 11)

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Cisco IOS Dial Services Quick Configuration Guide
Chapter 3 Configuring the Cisco 1604 Router
Verifying BRI Configuration
Verifying BRI Configuration
Step 1 Enter the no shutdown command. The following output messages appear:
robo-austin(config-if)# no shutdown
robo-austin#
00:45:01: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
00:45:01: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
00:45:01: %LINK-3-UPDOWN: Interface BRI0, changed state to up
robo-austin#
00:45:02: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 100 changed to up
00:45:02: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 101 changed to up
robo-austin(config-if)#
This example shows the BRI0:1 and BRI0:2 states change to “down” because the previous state was
“administratively down.” The BRI0 D channel changes to “up” as it spoofs for the two B channels. After
the D channel finds the B channels, the B channels change state to “up.” The Cisco 1604 communicates
with the telephone switch and receives its TEI numbers for its two B channels.
Step 2 Enter the show isdn status command to check the Cisco 1604’s ISDN status:
robo-austin# show isdn status
Global ISDN Switchtype = basic-ni
ISDN BRI0 interface
dsl 0, interface ISDN Switchtype = basic-ni
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 100, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI = 101, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Spid Status:
TEI 100, ces = 1, state = 5(init)
spid1 configured, no LDN, spid1 sent, spid1 valid
Endpoint ID Info: epsf = 0, usid = 2, tid = 1
TEI 101, ces = 2, state = 5(init)
spid2 configured, no LDN, spid2 sent, spid2 valid
Endpoint ID Info: epsf = 0, usid = 4, tid = 1
Layer 3 Status:
0 Active Layer 3 Call(s)
Activated dsl 0 CCBs = 0
Total Allocated ISDN CCBs = 0
The fields in the output example resulting from Step 2 above are described in Table 3-2:
Table 3-2 Field Descriptions for the show isdn status Command Output
Field Description
BRI0 Basic Rate Interface. The BRI 0 interface corresponds to DSL-0, which has three channels (2B +D).
DSL Digital Subscriber Line.
TEI Terminal Equipment Identifier.
CCB Call Control Block.
LDN Local Directory Number.
SPID Service Profile Identifier.