Cisco CCNA / CCNP 인스타 좋아요 늘리기 Certification Examination Tutorial: ISDN And Multilink PPP
ISDN is a huge topic on each your Cisco CCNA and BCRAN CCNP exams. Though a lot of ISDN subjects feel straightforward, its the main points that make the difference from the Examination area and dealing with ISDN in creation networks. Configuring and troubleshooting multilink PPP is only one of the talents youll must pass the two of those demanding exams.
With BRI, we’ve bought two B-channels to hold data, and equally of them Have a very sixty four-kbps capacity. You may think It might be a smart idea to have both channels in operation before a person reaches capability, and it is an excellent plan Dilemma is, it’s not a default behavior of ISDN. The 2nd b-channel won't begin to carry traffic until finally the initial one particular reaches potential.
With Multilink PPP (MLP), a bandwidth capability can be established that allows the second b-channel to bear info before the 1st channel reaches potential. The configuration for MLP is straightforward, but typically misconfigured. We’ll use our great Close friend IOS Assist to verify the measurement this command works by using.
Enabling MLP is a three-phase procedure:
Empower PPP within the connection
Permit MLP Along with the command ppp multilink
Outline the brink at which the next b-channel really should start carrying info Along with the dialer load-threshold command.
Let’s say you wanted the second b-channel to begin carrying info when the 1st channel reaches seventy five% of potential. It could seem sensible which the command to take action would be dialer load-threshold 75… but it really’s not.
R1(config)#int bri0
R1(config-if)#ppp multilink
R1(config-if)#dialer load-threshold ?
Load threshold to place A further contact
The dialer load-threshold price is based on 255, not 100. To acquire this command carry the road up at a particular percentage, multiply that share in decimal structure by 255. Down below, I multiplied 255 by .75 (75%) to arrive at 191.
R1(config-if)#dialer load-threshold 191 ?
either Threshold selection based on max of inbound and outbound website traffic
inbound Threshold final decision dependant on inbound traffic only
outbound Threshold final decision determined by outbound targeted traffic only