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cisco 2600 CCNA lab config

adama.yocam
Level 1
Level 1

Hello,

I ordered a set of hardware that came with CBT videos; however, the videos they sent do not exactly match the hardware and I'm stumped. 

I have 3 routers:

2610XM: Indianapolis

2620:New_England

2610:Seattle

Indianapolis connects to New_England with a WIC-1DSU-T1

Indianapolis connects to Seattle with a WIC-1T

The interfaces are up on all three devices and so are the protocols.  The videos are of 2500 series routers and they only use the WIC-1T card.  When I try to set the clock rate for the s0/1 on New England to 1000000 like the video suggest I get an error "this command only applies to DCE interfaces".  Do I not need to set this on the WIC-1DSU-T1 interface? 

Also,

Whenever I issue router rip and try to set network such as:

router rip

network 10.0.1.0

network 10.0.10.0

network 10.0.20.0

the network won't save on any of the devices.  If I show the running-config it shows network 10.0.0.0  I've tried saving the config directly after exiting outt of the config mode, but still only 10.0.0.0

Thank you all for your time

4 Replies 4

Julio Carvajal
VIP Alumni
VIP Alumni

Hello Adama,

1)The clock-rate needs to be enabled on the DCE end.

Each serial cable has two ends, DTE and DCE, the clock rate goes over the DCE side

To determine witch end has the DCE do the following
show controllers  serial x/x

Interface Serial1/0

Hardware is PowerQUICC MPC860

DCE V.35, clock rate 20000......

Example:

2)

router rip

version 2

no auto-summary

network 10.0.1.0

network 10.0.10.0

network 10.0.20.0

Rate all the answers, for the community that is as important as a thanks

Regards,

Julio

Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC

Thanks Julio,

I did that with the serial cable S0/0 interface usingg the WIC-1T card and it worked fine.  It just doe not work on the S0/1 interface on the same router using the WIC-1DSU-T1 card.  That card does not use a serial cable but the T1 crossover cable.  I will try your router rip and see if that changes anything.

Adama

Hello,

If it's not a serial cable of course you cannot set that on the interface

Sure let me know

Rate all the helpful posts, that is more important that a thanks for the community

Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC

Jose Bogantes
Level 1
Level 1

Hello Adama,

WIC-1DSU-T1s are not like WIC-1T for they always work as a T1. You do not need to use the clock rate command when you are configuring a WIC-1DSU-T1 for the configuration will be different. Please check the following link for further information on how to configure that card:

http://www.cisco.com/en/US/products/hw/modules/ps3129/products_tech_note09186a0080093d70.shtml

Interface serial 0/0
service-module t1 clock source internal
service-module t1 timeslots 1-24 speed 64
service-module t1 framing esf
service-module t1 linecode b8zs
ip address 10.1.1.1 255.255.255.0
encapsulation ppp

no shut

If you use timeslots 1-24, the serial will work as a full T1 but this is the default.

It is also useful to mention that one end of the T1 circuit should use clock source internal while the other end uses line.

You can also check the following link on clocking for a back-to back T1 circuit:

http://www.cisco.com/en/US/tech/tk713/tk628/technologies_configuration_example09186a00800a6b82.shtml

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