Solved: Issue with routing?!? I know I'm missing something. - Page 3

osatronix · ‎02-12-2012

Hi everyone.

I've set up home lab. I have two routers 1721, 1 switch 2950, PC and 2 laptops.

=================================================================================================

My two routers are connected via serial interface. R2 is directly connected to the PC on FastE 0 192.168.1.2. PC addres 192.168.1.1

Serial int addres 192.168.1.65.

R1 [serial int 192.168.1.66 connected to R2] with FastE 192.168.1.129 is connected to the switch [vlan int 192.168.1.130].

Two laptops are connected to the switch on ports 1 and 2. [192.168.1.131 - 192.168.1.133]

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The problem I'm having is that I can't ping devices on the other subnets. I have static routing set up on both routers:

R1-

Gateway of last resort is not set

192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks

C 192.168.1.65/32 is directly connected, Serial0

C 192.168.1.64/26 is directly connected, Serial0

S 192.168.1.0/26 [1/0] via 192.168.1.65

C 192.168.1.128/26 is directly connected, FastEthernet0

R2-

Gateway of last resort is not set

192.168.1.0/24 is variably subnetted, 4 subnets, 2 masks

C 192.168.1.64/26 is directly connected, Serial0

C 192.168.1.66/32 is directly connected, Serial0

C 192.168.1.0/26 is directly connected, FastEthernet0

S 192.168.1.128/26 [1/0] via 192.168.1.66

The thing when I'm on R2 I'm able to ping R1, switch and laptops - also my PC.

When I'm on R1 it is the same.

BUT. Whan I'm trying to ping something behind the router while on PC or laptops I'm getting this message:

----Reply from x.x.x.x: Destination host unreachable. - Packets sent=4 , received 4, lost 0---

Also replying address is different from the one I'm pinging.

I have no idea what is going on.

While setting it I was using Packet Tracer as a guide and created exact clone of this network - and a PT net works fine.

I did disable firewalls.

I'm attaching PT file.

Please help !!!

----------------------------------------------------------------------------------

R1 config file:

Current configuration : 890 bytes

!

version 12.4

service timestamps debug datetime msec

service timestamps log datetime msec

service password-encryption

!

hostname Router-1

!

boot-start-marker

boot-end-marker

!

enable secret 5 $1$q0Qj$8hrfpMXpSj4Xr96xFAhyM0

!

no aaa new-model

ip cef

!

multilink bundle-name authenticated

!

archive

log config

hidekeys

!

interface ATM0

no ip address

shutdown

no atm ilmi-keepalive

dsl operating-mode auto

!

interface FastEthernet0

ip address 192.168.1.2 255.255.255.192

speed auto

!

interface Serial0

ip address 192.168.1.65 255.255.255.192

encapsulation ppp

no fair-queue

clock rate 2000000

!

ip forward-protocol nd

ip route 192.168.1.128 255.255.255.192 192.168.1.66

!

no ip http server

no ip http secure-server

!

control-plane

!

banner motd ^C

==============

Router-2!!!!!!

==============

^C

!

line con 0

password 7 045F1E160E

logging synchronous

login

line aux 0

line vty 0 4

password 7 130102020A

login

!

end

hobbe · ‎02-19-2012

Just a small suggestion.

If I have the same type of problems you are experiencing I normally set up a sniffer (wireshark) so that I can know if the packets hit the target or not. regardless of firewall or not.

If you have ethernet between the routers (I think I saw somewhere that you were using serial links then this does not apply) you can connect a switch inbetween the routers and mirror a port to sniff the traffic there, then you can track down the problems much faster.

Good luck

HTH

ebarticel · ‎02-19-2012

Strange. It looks ok on PT.

Can you post the output of "sh controllers serial 0" and "sh int s0" of both routers?

osatronix · ‎02-19-2012

Hi

Yeah I know thats something really odd is going on.

I will post it tomorrow cause now i need to go to bed - I'm working in the morning.

Thanks all for your responses.

I'll be back tomorrow.

Once again thanks.

Good night.

osatronix · ‎02-20-2012

R1

Router---1#show controllers serial 0

Interface Serial0

Hardware is PowerQUICC MPC860

DTE V.35 TX and RX clocks detected.

idb at 0x832E391C, driver data structure at 0x832EB028

SCC Registers:

General [GSMR]=0x2:0x00000030, Protocol-specific [PSMR]=0x8

Events [SCCE]=0x0000, Mask [SCCM]=0x001F, Status [SCCS]=0x06

Transmit on Demand [TODR]=0x0, Data Sync [DSR]=0x7E7E

Interrupt Registers:

Config [CICR]=0x00365F80, Pending [CIPR]=0x00008000

Mask [CIMR]=0x40204000, In-srv [CISR]=0x00000000

Command register [CR]=0x600

Port A [PADIR]=0x0000, [PAPAR]=0x0903

[PAODR]=0x0000, [PADAT]=0xFFFD

Port B [PBDIR]=0x0180F, [PBPAR]=0x0E00E

[PBODR]=0x00000, [PBDAT]=0x0057C

Port C [PCDIR]=0x000, [PCPAR]=0x000

[PCSO]=0x020, [PCDAT]=0xFCC, [PCINT]=0x000

Receive Ring

rmd(FF003030): status 9000 length 12 address 720FDE4

rmd(FF003038): status 9000 length 12 address 7210464

rmd(FF003040): status 9000 length 12 address 7210AE4

rmd(FF003048): status 9000 length 12 address 7211164

rmd(FF003050): status 9000 length 12 address 72117E4

rmd(FF003058): status 9000 length 12 address 7211E64

rmd(FF003060): status 9000 length 34 address 7212B64

rmd(FF003068): status 9000 length 2E address 72131E4

rmd(FF003070): status 9000 length 2E address 7213864

rmd(FF003078): status 9000 length 12 address 7213EE4

rmd(FF003080): status 9000 length 12 address 720D6E4

rmd(FF003088): status 9000 length 12 address 720F764

rmd(FF003090): status 9000 length 12 address 720DD64

rmd(FF003098): status 9000 length 12 address 720E3E4

rmd(FF0030A0): status 9000 length 12 address 720EA64

rmd(FF0030A8): status B000 length 153 address 720F0E4

Transmit Ring

tmd(FF0030B0): status 5C00 length 2C address 721C3F4

tmd(FF0030B8): status 5C00 length 10 address 720D6E4

tmd(FF0030C0): status 5C00 length 10 address 70CFA14

tmd(FF0030C8): status 5C00 length 10 address 720DD64

tmd(FF0030D0): status 5C00 length 10 address 70CFC94

tmd(FF0030D8): status 5C00 length 10 address 720EA64

tmd(FF0030E0): status 5C00 length 10 address 70D0054

tmd(FF0030E8): status 5C00 length 10 address 7210464

tmd(FF0030F0): status 5C00 length 10 address 70D02D4

tmd(FF0030F8): status 5C00 length 151 address 72307B4

tmd(FF003100): status 5C00 length 10 address 7211164

tmd(FF003108): status 5C00 length 10 address 70D0694

tmd(FF003110): status 5C00 length 10 address 7211E64

tmd(FF003118): status 5C00 length 10 address 70D07D4

tmd(FF003120): status 5C00 length 10 address 7212B64

tmd(FF003128): status 7C00 length 10 address 70D0914

tx_limited=0(16)

SCC GENERAL PARAMETER RAM (at 0xFF003C00)

Rx BD Base [RBASE]=0x3030, Fn Code [RFCR]=0x18

Tx BD Base [TBASE]=0x30B0, Fn Code [TFCR]=0x18

Max Rx Buff Len [MRBLR]=1548

Rx State [RSTATE]=0x18008440, BD Ptr [RBPTR]=0x3070

Tx State [TSTATE]=0x18000548, BD Ptr [TBPTR]=0x30B0

SCC HDLC PARAMETER RAM (at 0xFF003C38)

CRC Preset [C_PRES]=0xFFFF, Mask [C_MASK]=0xF0B8

Errors: CRC [CRCEC]=0, Aborts [ABTSC]=0, Discards [DISFC]=0

Nonmatch Addr Cntr [NMARC]=0

Retry Count [RETRC]=0

Max Frame Length [MFLR]=1610

Rx Int Threshold [RFTHR]=0, Frame Cnt [RFCNT]=65352

User-defined Address 0000/0000/0000/0000

User-defined Address Mask 0x0000

buffer size 1524

PowerQUICC SCC specific errors:

0 input aborts on receiving flag sequence

0 throttles, 0 enables

0 overruns

0 transmitter underruns

0 transmitter CTS losts

Router---1#sh int serial 0

Serial0 is up, line protocol is up

Hardware is PowerQUICC Serial

Internet address is 192.168.1.66/26

MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Open

Open: IPCP, CDPCP, loopback not set

Keepalive set (10 sec)

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

Last clearing of "show interface" counters 00:10:28

Input queue: 0/75/0/0 (size/max/drops/flushes); 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

207 packets input, 9583 bytes, 0 no buffer

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

1 input errors, 0 CRC, 1 frame, 0 overrun, 0 ignored, 0 abort

232 packets output, 10702 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

1 unknown protocol drops

0 output buffer failures, 0 output buffers swapped out

0 carrier transitions

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

================================================================================

R2

Router---2#show controllers serial 0

Interface Serial0

Hardware is PowerQUICC MPC860

DCE V.35, clock rate 56000

idb at 0x832475C0, driver data structure at 0x8324ECCC

SCC Registers:

General [GSMR]=0x2:0x00000030, Protocol-specific [PSMR]=0x8

Events [SCCE]=0x0000, Mask [SCCM]=0x001F, Status [SCCS]=0x06

Transmit on Demand [TODR]=0x0, Data Sync [DSR]=0x7E7E

Interrupt Registers:

Config [CICR]=0x00365F80, Pending [CIPR]=0x00000804

Mask [CIMR]=0x68200400, In-srv [CISR]=0x00000000

Command register [CR]=0x640

Port A [PADIR]=0x1500, [PAPAR]=0x9FCF

[PAODR]=0x0000, [PADAT]=0x79F7

Port B [PBDIR]=0x0BC0F, [PBPAR]=0x0D00E

[PBODR]=0x00000, [PBDAT]=0x091DC

Port C [PCDIR]=0x008, [PCPAR]=0x000

[PCSO]=0x8A0, [PCDAT]=0xB34, [PCINT]=0x000

Receive Ring

rmd(FF003130): status 9000 length 2E address 7230FE4

rmd(FF003138): status 9000 length 12 address 7231664

rmd(FF003140): status 9000 length 12 address 722AE64

rmd(FF003148): status 9000 length 30 address 722B4E4

rmd(FF003150): status 9000 length 2E address 722BB64

rmd(FF003158): status 9000 length 2E address 722C1E4

rmd(FF003160): status 9000 length 2E address 722C864

rmd(FF003168): status 9000 length 30 address 722CEE4

rmd(FF003170): status 9000 length 2E address 722D564

rmd(FF003178): status 9000 length 30 address 722DBE4

rmd(FF003180): status 9000 length 30 address 722E264

rmd(FF003188): status 9000 length 2E address 722E8E4

rmd(FF003190): status 9000 length 30 address 722EF64

rmd(FF003198): status 9000 length 30 address 722F5E4

rmd(FF0031A0): status 9000 length 30 address 722FC64

rmd(FF0031A8): status B000 length 30 address 72302E4

Transmit Ring

tmd(FF0031B0): status 5C00 length 25C address 723A134

tmd(FF0031B8): status 5C00 length 1CF address 723A474

tmd(FF0031C0): status 5C00 length 1CF address 7239DF4

tmd(FF0031C8): status 5C00 length 87 address 723A7B4

tmd(FF0031D0): status 5C00 length 87 address 70BB814

tmd(FF0031D8): status 5C00 length 87 address 70BCED4

tmd(FF0031E0): status 5C00 length 87 address 70BBB54

tmd(FF0031E8): status 5C00 length 87 address 723AE34

tmd(FF0031F0): status 5C00 length 87 address 70BC1D4

tmd(FF0031F8): status 5C00 length 87 address 723AAF4

tmd(FF003200): status 5C00 length 87 address 723B174

tmd(FF003208): status 5C00 length 87 address 70BBE94

tmd(FF003210): status 5C00 length 87 address 70BE594

tmd(FF003218): status 5C00 length 87 address 70BE254

tmd(FF003220): status 5C00 length 87 address 723B4B4

tmd(FF003228): status 7C00 length 60 address 723BB34

tx_limited=1(2)

SCC GENERAL PARAMETER RAM (at 0xFF003D00)

Rx BD Base [RBASE]=0x3130, Fn Code [RFCR]=0x18

Tx BD Base [TBASE]=0x31B0, Fn Code [TFCR]=0x18

Max Rx Buff Len [MRBLR]=1548

Rx State [RSTATE]=0x18008440, BD Ptr [RBPTR]=0x31A8

Tx State [TSTATE]=0x18000548, BD Ptr [TBPTR]=0x31F0

SCC HDLC PARAMETER RAM (at 0xFF003D38)

CRC Preset [C_PRES]=0xFFFF, Mask [C_MASK]=0xF0B8

Errors: CRC [CRCEC]=0, Aborts [ABTSC]=0, Discards [DISFC]=0

Nonmatch Addr Cntr [NMARC]=0

Retry Count [RETRC]=0

Max Frame Length [MFLR]=1610

Rx Int Threshold [RFTHR]=0, Frame Cnt [RFCNT]=65176

User-defined Address 0000/0000/0000/0000

User-defined Address Mask 0x0000

buffer size 1524

PowerQUICC SCC specific errors:

0 input aborts on receiving flag sequence

0 throttles, 0 enables

0 overruns

0 transmitter underruns

0 transmitter CTS losts

Router---2#show interfaces serial 0

Serial0 is up, line protocol is up

Hardware is PowerQUICC Serial

Internet address is 192.168.1.65/26

MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation PPP, LCP Open

Open: IPCP, CDPCP, loopback not set

Keepalive set (10 sec)

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

Last clearing of "show interface" counters 00:13:36

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: weighted fair

Output queue: 0/1000/64/0 (size/max total/threshold/drops)

Conversations 0/2/256 (active/max active/max total)

Reserved Conversations 0/0 (allocated/max allocated)

Available Bandwidth 1158 kilobits/sec

5 minute input rate 0 bits/sec, 2 packets/sec

5 minute output rate 5000 bits/sec, 13 packets/sec

861 packets input, 42168 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

4048 packets output, 194804 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

1 unknown protocol drops

0 output buffer failures, 0 output buffers swapped out

7 carrier transitions

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

Here you go - I personally don't know what all taht means.

And by the way - when I turned on my lab today I couldn't ping host .1 anymore.

Dan-Ciprian Cicioiu · ‎02-18-2012

Hi ,

I think that this time you forgot the static route on R1, pointing to R2

ip route 192.168.1.0 255.255.255.192 192.168.1.65

You can post for the sake of clarity :

show ip route

show ip inter brie

from your 2 equipments

Dan

osatronix · ‎02-20-2012

OK.

I figured it out.

Sorry for the hustle and your help everyone.

On the laptop and PC I have also WiFi cards installed. When they are turn on i can't ping from hosts when I turn WiFi connections off, hosts are able to ping each other.

I did not know that can impact connectivity - I discovered it by accident.

Sorry guys - I know I was pain i the a.s.

Can anyone can tell me why it works this way?

Thank you all very much!!!

--------------------------------------

Dan-Ciprian Cicioiu · ‎02-21-2012

Probably because of the 2 default gateways that you have on the PC.

As far as I know , Windows OS has an real problem in functioning with 2 default gateways on 2 different network cards.

Dan

osatronix · ‎02-21-2012

Thank you all very much!!!

ebarticel · ‎02-21-2012

Thats good to hear that you found the problem. The reason it works this way with PCs that have wireless as well, is when a connection is set as default, and in your case (as in many other laptops) the wifi connection is the default.

The output from last two commands it shows that you have the right cable connected, configured clocking signal on the right end, and that PPP is configured correctly. The rest is for smart people to understand

It was my pleasure to help

All the best

Eugen