I am fairly new(b) to configuring Cisco routers for MPLS. My scenario is this: We just establish a MPLS network with Earthlink a few months ago between two locations with four bonded T1's. At the time it was decided to have Eathlink provide the router for that connection and all is working well there.
We recently decided to add another location to our MPLS network however this time it was decided that we would provide the router for this location.
So we purchased a Cisco 1921 with a HWIC-1DSU-T1 card. For the configuration of the serial interface I have:
interface Serial0/0/0 ip address 10.168.0.10 255.255.255.252 encapsulation ppp no shutdown
When we connect to the circuit, I get nothing. The interface stays in a line protocol down
state.
Am I missing something on the configuration of this interface for MPLS?
Below is what the network looks like. Earthlink assigned the 10.168.0.8/30 subnet to this network. 10.168.0.9 being the provider edge router and 10.168.0.10 being the customer edge (our) router.
If there is a need to attach the whole config for this router I can.
It might be better if you attach the whole config and a show version command. Did Earthlink give you some information about the linecode and framing? I am not sure if the interface you are configuring is really the HWIC-1DSU-T1 because I expect the serial interface to look something like Sx/x/x:0 (I might be wrong though, it's some time since I last configured this).
Do you see something like this in the config:
controller T1 1/0
framing esf
linecoding b8zs
clock source line
channel-group 0 timeslots 1-24
Earthlink did not give me any information on the linecode or framing.
I do however have access to their routers and I have attached their config as well. One thing to note is that their router is bonding 4 T1s for this location and the location I am adding is only 1 T1.
My Router
Router-31#sh runBuilding configuration...Current configuration : 4836 bytes!! No configuration change since last restartversion 15.1service timestamps debug uptimeservice timestamps log datetime msec localtime show-timezoneservice password-encryption!hostname Router-31!boot-start-markerboot-end-marker!!logging buffered 51200 warningsenable secret 5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX!aaa new-model!!aaa authentication attempts login 2aaa authentication banner ^CThis system is for authorized users only. Use of thiscomputer system without authority,or in excess of authority,is subject to having all activities on thissystem monitored and recorded by systems personnel.In the course of monitoring individuals improperly using this system, or in the course of system maintenance,the activities of authorized users mayalso be monitored. Anyone using this system expresslyconsents to such monitoring and is advised that ifsuch monitoring reveals possible criminal activityor policy violation, system personnel may provide theevidence of such monitoring to law enforcement orother officials.^Caaa authentication fail-message ^CThis is a Private System all loginattempts are logged. If you feel you have reached this message inerror please contact your supervisor.^Caaa authentication password-prompt "Please Enter Your Password"aaa authentication username-prompt "Please Enter Your Username"aaa authentication login con localaaa authentication enable default enable!!!!!aaa session-id common!clock timezone EST -5 0clock summer-time EDT recurring!no ipv6 cefip source-routeip cef!!!no ip dhcp use vrf connected!!ip domain name XXXXXXX.XXXip name-server 10.0.6.50ip name-server 10.0.6.51!multilink bundle-name authenticated!crypto pki token default removal timeout 0!crypto pki trustpoint TP-self-signed-1233492277 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-1233492277 revocation-check none rsakeypair TP-self-signed-1233492277!!crypto pki certificate chain TP-self-signed-1233492277 certificate self-signed 01!!username XXXXXXXXXXX privilege 15 secret 5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX!redundancy!!!!! !!!!!!interface Embedded-Service-Engine0/0 no ip address shutdown!interface GigabitEthernet0/0 ip address 172.16.1.153 255.255.255.248 no shutdown duplex auto speed auto!interface GigabitEthernet0/1 no ip address shutdown duplex auto speed auto!interface Serial0/0/0 ip address 10.168.0.10 255.255.255.252 encapsulation ppp no shutdown!ip forward-protocol nd!ip http serverip http authentication localip http secure-serverip http timeout-policy idle 60 life 86400 requests 10000!ip route 0.0.0.0 0.0.0.0 10.168.0.1ip route 10.0.0.0 255.255.255.0 192.168.3.82ip route 10.0.6.0 255.255.255.0 192.168.3.82!!!!!!!!control-plane!!!line con 0line aux 0line 2 no activation-character no exec transport preferred none transport input all transport output pad telnet rlogin lapb-ta mop udptn v120 ssh stopbits 1line vty 0 4 privilege level 15 transport input telnet sshline vty 5 15 privilege level 15 transport input telnet ssh!scheduler allocate 20000 1000ntp server 172.16.3.1endRouter-31#
Can you also attache the output of:
show interface Serial0/0/0
Possibly also this, if that exists:
show controller Serial0/0/0
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I am not sure that it should be ppp encapsulation. I will try configuring the s0/0/0 interface as suggest. I will not be able to get onsite with the router until next Tues. I will update the question when I am able to test.
I tried both senarios mentioned for hdlc encapsation. However, both options did not work. I am at least getting the serial interface to come up administratively however line protocol remains down.
I actually found out the issue right after I posted my response earlier. You had it right originally. I forgot that I was trying HDLC encapsulation and forgot to switch back to ppp.
I switched back to 'encapsulation ppp' with your second set of settings and the line came right up:
Using pergr second recommendation with 'encapsulation ppp' was the correct config to this issue. Thanks.
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