Help with PC'S not coneccting to one subnetwork to other

[bdmorantes]

I'm doing this exercise, in which I have 3 subnetworks and I'm trying to communicate them, but when I try to ping or make the connection just fail. Can someone help me, please?

Routers Configs

Router 0

  

Router 1

  

Router 2

PC's configs

 

 

[Martin L]

start pining PC to its default router as it is a gateway router to reach remote LANs.  IP of LAN are not configured on routers; u should use router's Gig interfaces instead of switchport F0/0/0; if u use those fa0/0/0/ switchport interface then u must use interface vlan x , aka SVI and add IP 172.16.20.1 there;  then, u must remove some static routing - if not all static routes- and add no auto-summary - just in case ; make sure RIP runs version 2 under  router RIP.  check ip routing table then. 

fixed those and let us know if u can ping local router first. 

Regards, ML
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[bdmorantes · Accepted solution]

Hi Martin, Thanks a lot, now I just need to config RIP routing I try to execute the following commands but is not working,
router rip
version 2
network 172.16.20.0
network 172.16.23.0

When i check the RIP config does not save the IP's

Could you help me with that please?

[Martin L]

that is OK; that is how RIP works; classful way based on class A,B,C default mask; it is old protocol and upgraded from version 1;  any subnetted networks will show up as their default class. 

Add no auto-summary on all routers; u may wanna check static routes; I think they are no needed ; definitely not needed on Router0 ; Use and check destination using show ip route 172.16.23.3 - it shows static but should be directly connected on R0 as it is such. 

Remove all static routes ; then if pings fail; check if u need to add a route - but i do not think so. 

Regards, ML
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[bdmorantes]

Ok Thanks, I did the RIP routing config because is a college's homework, and my teacher asked me to. One last thing, I'm having an error Request timed out when I ping 172.16.20.1 from the subnetwork C. Maybe you see anything wrong with the routers config?

Router 0

 

  

Router 1

  

 

Router 2

[Georg Pauwen]

Hello,

post your (zipped) updated Packet Tracer project (.pkt) file...

[Martin L]

in this case, u must remove RIP from all routers and add static routes via CLI; Note that GUI router config tab is only PT thing; it does not exists (although some routers come with web-based configuration ability); 

Static routing works only when all routers know how to reach remote network (lots of routes); Routers know about their directly connected networks only without any help (show ip route connected); then u must tell each router how to other networks ; aka network he does not know;  each router needs static route to reach LAN network off remote router;   Router0 knows about Subnet C and PC6 and Router1 knows its own sunbet A PC2;  to get from PC2 to PC6 u must go via router1 and router0. So, on R1 u need to tell it (using ip route command ) to get to C and PC6 u must use R0 and vice versa; on R0 u need static route telling R0 to reach A off R1 u need to go to R1 via serial interface x.    

command is ip route x.x.x.x m.m.m.m next-hop IP (or my exit interface); 

Regards, ML
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