1841 Mpls Config

[phillip]

First off I am not sure if posting this type of question is what this area is for, but why not try I say :)

Its been awhile since I have had to setup a router from scratch and here is what I have

2 1841 routers T1 wic in them base IP IOS

Info provided to me by carrier for point to point MPLS circuit:

Site 1

Carrier Serial: 65.11.196.229/30

Customer Serial: 65.11.196.230/30

Encapsulation: HDLC

Site 2

Carrier Serial: 65.11.196.233/30

Customer Serial: 65.11.196.234/30

Encapsulation: HDLC

I did for router config

Site 1

interface Serial0/0/0

ip address 65.11.196.234 255.255.255.252

!

ip route 0.0.0.0 0.0.0.0 65.11.196.230

Site 2

interface Serial0/0/0

ip address 65.11.196.230 255.255.255.252

!

ip route 0.0.0.0 0.0.0.0 65.11.196.234

Do those look right as far as serial ips assigned and the static routes right?

As or specifying the encap as hdlc, whenever I go to the serial int and do encap hdlc it adds no new lines to the config is hdlc default encap so if its specified it just don't matter?

Thanks for the support here...

[smothuku]

Hi ,

Default encapsulation on any cisco router is HDLC.If you want to change encapsulation to PPP then you can use encapsulation ppp.

If you don't specify encapsulation on any interfcae default would be hdlc.

If you want check the encapsulation of any interface then use ""show interface interfcae number """ command..ex sh int s0/0/0 displays info about serial 0/0/0.

Thanks,

satish

[phillip]

Thats what I thought on the HDLC, thank you.

How do the lines for the serial interface look compared to the info that was provided to me by the provider?

[smothuku]

Hi Phillip ,

Example for serial interface config:

config # int s0

config-if # bandwidth 64

config-if # encapsulation PPP

config-if # ip address xxxx xxxxx

config-if # keepalive 5

config-if # no shut.

example for sh int s0 looks like

Router# show interfaces serial 0/0

Serial0/0 is up, line protocol is up

Hardware is PowerQUICC Serial

Internet address is 1.1.1.2/24

MTU 1500 bytes, BW 2000 Kbit, DLY 20000 usec,

reliability 255/255, txload 3/255, rxload 50/255

Encapsulation PPP, loopback not set, keepalive not set

LCP Open

Open: IPCP, CCP ==> If two routers have successfully negotiated compression.

Last input 00:00:04, output 00:00:00, output hang never

Last clearing of "show interface" counters 1w1d

Queueing strategy: fifo

Output queue 0/40, 80 drops; input queue 0/75, 0 drops

30 second input rate 397000 bits/sec, 40 packets/sec

30 second output rate 30000 bits/sec, 40 packets/sec

27859655 packets input, 4176659739 bytes, 0 no buffer

Received 175145 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

55309592 packets output, 1044865717 bytes, 0 underruns

0 output errors, 0 collisions, 12 interface resets

0 output buffer failures, 0 output buffers swapped out

36 carrier transitions

DCD=up DSR=up DTR=up RTS=up CTS=up

hope it helps you.

Thanks,

satish

[amarsjoshi · Accepted solution]

Hi,

You should make sure that the static routes point to the carrier ips and not the customer ips..

HTH,

Amar

[phillip]

That is exactly what I was looking for, in a normal point to point you specify the other ends IP but since MPLS is technically managed by the carrier it would make sense to put the carriers ip as the start point for the route... Perfect thank you!