Understanding the network.pdf - Back to Home

22:41:34: %LINK-3-UPDOWN: Interface BRI0:1, changed state to down
22:41:34: %LINK-3-UPDOWN: Interface BRI0:2, changed state to down
22:41:34: %LINK-3-UPDOWN: Interface BRI0, changed state to up
22:41:38: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 87 changed to
up
22:41:38: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 88 changed
The default is to negotiate TEI when the interface comes online, but it is possible to
have this occur when the first ISDN call is placed. This behavior is set using the
interface subcommand . To check the state of
the ISDN BRI interface, the user EXEC command is used:
leibniz#sh 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 = 87, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
TEI = 88, Ces = 2, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Spid Status:
TEI 87, ces = 1, state = 5(init)
spid1 configured, spid1 sent, spid1 valid
Endpoint ID Info: epsf = 0, usid = 2, tid = 1
TEI 88, ces = 2, state = 5(init)
spid2 configured, 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
The Free Channel Mask: 0×80000003
Total Allocated ISDN CCBs = 0
After the interface is configured, the next step is to configure multilink PPP and
create the dialer map:
leibniz(config-if)#encapsulation ppp