remeber by deafult all interface arein shut down Mode
here in R1 I have a router with 2 interface :
R1#show ip int brie
R1#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES manual administratively down down FastEthernet0/1 unassigned YES manual administratively down down
-----------------------------------as we see I have 2 lan interface-----
later on I will connect some WAN interface ; and remeber in order to bring up the interfacei must go to that interface and give the commands no shut
any time you see admin down ; it means you need to give no shut
----------------------------here is my Lab ip address----
I have Pc1=10.10.10.1 /24 pc2=10.10.10.2 /24 pc3=10.10.10.3/24
all above PC will have a DG=10.10.10.100 /24
also on R1 I will be using F0/0 and s0/0
Hint: f0/0 is used for LAN interface s0/0 is used for WAN interface
my R1 has f0/0=10.10.10.100 /24 s0/0=20.20.20.5 /30 (255.255.255.252) it means block size of 4; so it will be
subnet Id 1st ip end ip brodcast 20.20.20.4 20.20.20.5 20.20.20.6 20.20.20.7 20.20.20.8 20.20.20.9 20.20.20.10 20.20.20.11 20.20.20.12 20.20.20.13 20.20.20.14 20.20.20.15
HINT on the exams or on the diagram they will say 10.10.10.4/30
10.10.10.4 represent the subnet ID ; but what you type at R1 s0/0 will be 10.10.10.5
then On r2 i will have
R2 f0/0 =30.30.30.100 /24 s0/0=20.20.20.6 /30
then the other lan connected to the R2 will be using 30.30.30.0/24
pc5= 30.30.30.5 /24pc6=30.30.30.6 /24pc7=30.30.30.7/24
------------------------------Now I will go to R1 f0/0 and give ip addrees and no shut---
R1#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES manual administratively down down FastEthernet0/1 unassigned YES manual administratively down downR1#config tEnter configuration commands, one per line. End with CNTL/Z.R1(config)#int f0/0R1(config-if)#no shut
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to upR1(config-if)#ip address 10.10.10.100% Incomplete command.R1(config-if)#ip address 10.10.10.100 ? A.B.C.D IP subnet maskR1(config-if)#ip address 10.10.10.100 255.255.255.0
----------------------------------Hint ping works at R1# and R1> mode----
here is my result after I give no shut and I give ip address to R1----
R1#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.10.10.100 YES manual up up FastEthernet0/1 unassigned YES manual administratively down downR1#R1#R1#ping 10.10.10.1
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 10.10.10.1, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 47/56/62 ms
R1#ping 10.10.10.2
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 10.10.10.2, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 47/58/63 ms
R1#ping 10.10.10.3
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 10.10.10.3, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 49/58/62 ms
---------------------so Life is good for the LAN of 10.10.10.0/24-----
---------------------Now I will go to R2 and do same for LAN 30.30.30.0/24----
here is before I changes at R2#
R2#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 unassigned YES manual administratively down down FastEthernet0/1 unassigned YES manual administratively down down
R2#config tEnter configuration commands, one per line. End with CNTL/Z.R2(config)#int f0/0R2(config-if)#n0 shut
%LINK-5-CHANGED: Interface FastEthernet0/0, changed state to up%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to upR2(config-if)#ip address 30.30.30.100 255.255.255.0
---------------------Now I will look at the change of result-----
R2#show ip int brieR2#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 30.30.30.100 YES manual up up FastEthernet0/1 unassigned YES manual administratively down downR2#R2#
----------------------------Now I test my ping on the LAN and life is good
R2#ping 30.30.30.5
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 30.30.30.5, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 47/59/63 ms
R2#ping 30.30.30.4
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 30.30.30.4, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 47/58/63 ms
R2#ping 30.30.30.6
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 30.30.30.6, timeout is 2 seconds:.!!!!Success rate is 80 percent (4/5), round-trip min/avg/max = 62/62/63 ms
--------------------------------Now we will connect a WAN link between R1 and R2----
in order to do that we need to add a WIC cards interface ; that you will add it. This is a simulation so you must save your configuration ; shut you pc ; then Add the Interface cards ;then reboot the router ; then you will see a new interface called s0/0
HInT make sure save your work but how ?
for now just type this
R1#copy run start
--------------------------Here is what is in LAB----
in lab enviroment ; I will use Back to back cables ; one side is DCE the other side is DTE
it is important that the side has DCE ; you provide a clock rate commands , otherwise you can not be able to ping
But how do you know which side DCE or DTE ?
method #1 ) look at the cables labelmethids # 2) R1#show controllers s 0/0
R1#show contrR1#show controllers s 0/0Interface Serial0/0Hardware is PowerQUICC MPC860DCE V.35, no clockidb at 0x81081AC4, driver
as we see R1 s0/0 is connected to DCE side
------------------------Now If I go to R2 s0/0 i should see DTE ----
R2#show controllers s 0/0Interface Serial0/0Hardware is PowerQUICC MPC860DTE V.35 clocks stopped.
---------------------Now I will go to R1 s0/0 and give IP address and the clock rate coomnds---
here is R1 before any changes
R1#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 10.10.10.100 YES manual up up FastEthernet0/1 unassigned YES manual administratively down down Serial0/0 unassigned YES manual up downR1#R1#R1#config tEnter configuration commands, one per line. End with CNTL/Z.R1(config)#int s0/0R1(config-if)#no shutR1(config-if)#ip address 20.20.20.5 255.255.255.252R1(config-if)#cloR1(config-if)#clock rate ?Speed (bits per second 1200 2400 4800 9600 19200 38400 56000 64000 72000 125000 128000 148000 250000 500000 800000 1000000 1300000 2000000 4000000 <300-4000000> Choose clockrate from list aboveR1(config-if)#clock rate 64000R1(config-if)#%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up
-----------------------------------Now I will go to R2 and give Ip address only to s0/0since remember R2 is not connected to DCE .....
Hint : only the DCE side has the clock rate commands
-------------------so lets go to R2 before any changes----------------
R2#show ip int brieR2#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 30.30.30.100 YES manual up up FastEthernet0/1 unassigned YES manual administratively down down Serial0/0 unassigned YES manual up upR2#config tEnter configuration commands, one per line. End with CNTL/Z.R2(config)#int s0/0R2(config-if)#no shutR2(config-if)#ip address 20.20.20.6 255.255.255.252
--------------------here is the result in R2 after changes------
R2#show ip int brieR2#show ip int brief Interface IP-Address OK? Method Status Protocol FastEthernet0/0 30.30.30.100 YES manual up up FastEthernet0/1 unassigned YES manual administratively down down Serial0/0 20.20.20.6 YES manual up up
--------------------Now I try ping from R2 to R1 s0/0-----------
R2#ping 20.20.20.5
Type escape sequence to abort.Sending 5, 100-byte ICMP Echos to 20.20.20.5, timeout is 2 seconds:!!!!!Success rate is 100 percent (5/5), round-trip min/avg/max = 16/28/32 ms
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