878 configuration

Unanswered Question
Apr 17th, 2007

hello there, i am a newbie with cisco routers. i was able to connect to 2 buildings using 1600 on the one end and a 1700 series router on the other end thru a copper lease line. i just found a cisco 878 router in the market and it has a g.shdsl wan port, can i use it on both ends? what would be the requirements? is the copper lease line enough? thank you so much in advance.


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Overall Rating: 5 (2 ratings)
Paolo Bevilacqua Tue, 04/17/2007 - 14:41

Sure, copper dry pair lease will let you connect the two g.shdsl routers just fine. Remember one side has to provide clock.

Hope this helps, if so please rate post!

juandelacruz17 Tue, 04/17/2007 - 16:17

p.bevilacqua, thank you very much for your immediate reply would you mind if you have a basic config on this.. i'm very sorry to post this i am really confuse.

thank you

jetlen123071 Wed, 07/11/2007 - 22:18

sir, this doc really helps me a lot. straight forward config. thank you so much. i have just wandering one thing on my setup from computer at building two i can ping the ip of the ethernet and atm of the two routers also the LAN at building b.... but from a computer from building b, i cannot ping the ip of the atm0, but I can see the LAN. I think it's weird. What would be the thing that i miss in the configuration.? here is the config. thanks

ip dhcp excluded-address xxxxxxx



no ip domain lookup

ip name-server xxxxxxx

ip name-server xxxxxxx



controller DSL 0

mode atm

line-term co

line-mode 2-wire line-zero

dsl-mode shdsl symmetric annex A

line-rate 2304






interface BRI0

no ip address

encapsulation hdlc



interface ATM0

no ip address

no atm ilmi-keepalive

pvc 0/35

encapsulation aal5snap


pvc 8/35

encapsulation aal5mux ppp dialer

dialer pool-member 1



interface FastEthernet0

interface FastEthernet1


interface FastEthernet2


interface FastEthernet3


interface Vlan1

description Local Area Connection

ip address xxxxxxxxxxxxxxxx

ip tcp adjust-mss 1452


interface Dialer0

ip address xxxxxxxxxxxxxx

encapsulation ppp

dialer pool 1

dialer-group 1

no cdp enable


ip classless

ip route xxxxxxxxxxxxxx

ip route xxxxxxxxxxxxxx


no ip http server

ip http authentication local

no ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000


access-list 23 permit xxxxxxxx

dialer-list 1 protocol ip permit

no cdp run






line con 0

login local

no modem enable

line aux 0

line vty 0 4

access-class 23 in

privilege level 15

password xxxxxxx


transport input telnet ssh


scheduler max-task-time 5000


Paolo Bevilacqua Thu, 07/12/2007 - 00:33


do you feel ready for a little bit of dynamic routing?

on both routers:

router rip

version 2


redistribute static

At that point if you do "show ip route" on the other building router you should see " via ". Configure the PC to router as default gateway and you are fine.

jetlen123071 Thu, 07/12/2007 - 14:08


good day, just a question, once that this has been issued do I have to delete the static route. this seems to be an idiot question, but i am confuse. thank you very much

Paolo Bevilacqua Thu, 07/12/2007 - 15:42

When dynamic routing is in place,you just need to leave the static default route

There is also a setting so that it is learnt automatically from PPP, but it not so important to do so.

jetlen123071 Wed, 07/18/2007 - 12:44

guys, i was able to have the existing configuration work, problem is i forgot to make a static route to the internal LAN. it is now working. with regards to the dynamic routing, i've tried it on my other setup and it works fine. thank you so much for being patience with me.

jetlen123071 Wed, 07/25/2007 - 21:39

guys, it's me again just wanted to know as what are the things that i needed for voip setup. does 878 can be use for voip. thank you again so much.

Paolo Bevilacqua Thu, 07/26/2007 - 02:37

Sure can do Voip, connect you equipment and if there are quality issues search CCO "LLQ QoS" and try to apply a configuration example.


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