static routing configuartion on cisco router using serial port.

Posted: 30 Mar 2015 in CCNA
Tags: , ,

Learn how to configure static routing using serial port on cisco routers.This is a basic Lab to show you how to configure static routing on cisco router using serial interfaces like se0/0/0 or se0/0/1.This is little bit different from  static routing done using fast ethernet port, because now you have to assign clock rate on on of it interface which will be DCE.

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static routing using serial port

Lets start configuring static routing.

First of all we need to assign ip addresses on both pc and then assign ip addresses on each and every interfaces of routers and make them up using no shutdown command.

Here in this article i assume that you know how to assign ip address on i am going to start configuration on routers.




Router#config t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R1

R1(config)#int fa0/0

R1(config-if)#ip address

R1(config-if)#no shut


R1(config)#int se0/0/0

R1(config-if)#ip address

R1(config-if)#clock rate 64000

R1(config-if)#no shut




Router#config t

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)#hostname R2

R2(config)#int fa0/0

R2(config-if)#ip address

R2(config-if)#no shut


R2(config)#int se0/0/0

R2(config-if)#ip address

R2(config-if)#no shut


Now again go back to Router R1 and configure route in global configuration mode:

R1(config)#ip route

Now again go back to Router R2 and configure route in global configuration mode.

R2(config)#ip route



here I am on router R1 :

R1#show ip route
Codes: C – connected, S – static, I – IGRP, R – RIP, M – mobile, B – BGP
D – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter area
N1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2
E1 – OSPF external type 1, E2 – OSPF external type 2, E – EGP
i – IS-IS, L1 – IS-IS level-1, L2 – IS-IS level-2, ia – IS-IS inter area
* – candidate default, U – per-user static route, o – ODR
P – periodic downloaded static route

Gateway of last resort is not set

C is directly connected, FastEthernet0/0
C is directly connected, Serial0/0/0
S [1/0] via


Explanation of above command:

You can see the above output.In above output C means directly connected in case of router R1 network and network is directly connected to it.

S indicating the indirectly connected network here which is network and is staticly routed via port address.


Now if you are intrested in seeing the detail information of every interfaces of this router you just type belwo command.

R1#show interfaces
FastEthernet0/0 is up, line protocol is up (connected)
Hardware is Lance, address is 000a.f334.aa01 (bia 000a.f334.aa01)
Internet address is
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00,
Last input 00:00:08, output 00:00:05, output hang never
Last clearing of “show interface” counters never
Input queue: 0/75/0 (size/max/drops); Total output drops: 0
Queueing strategy: fifo
Output queue :0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier


If you want to trace the route or path to pc5 located in network and you are on pc4 which is in network just type below command and it will show you the route to pc5.

Type escape sequence to abort.
Tracing the route to

1 2 msec 0 msec 0 msec
2 * 13 msec 0 msec


If you want to see the arp table type below command:

R1#show ip arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet – 000A.F334.AA01 ARPA FastEthernet0/0


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