cant ping all devices on network

[jerry.mcrae]

i have a directly connected network (T-1) 172.19.1.1 and from the router i can ping only some devices on the 172.16.1.0 network. i have a route in the routing table for the 172.16 network. i can ping their defaut gateway which is 172.16.1.1 but i cant ping my laptop 172.16.1.60.

i replaced the router on the 172.19.1.0 network last week.

a new one on me - any ideas?

thanks

[Edison Ortiz]

Check for correct subnet mask and default gateway on the end nodes. Compare this information on devices that you can ping vs the ones you can't.

Also, let's see the 'sh ip route' from the T1 router.

[jackyoung]

Please also povide the trace route from the hosts at both end to determine the packet stop at where.

Moreover, please ensure the firewall at your PC that allows the ping from remote or simply turn off your PC firewall and test again.

Hope this helps.

[jerry.mcrae]

here is show ip route from the router where the packets are getting lost - it's the 172.16.1.1 router. i cant ping my laptop from this router and i am directly connected!

this table had to be edited due to the size.

Gateway of last resort is 172.16.1.2 to network 0.0.0.0

D 172.17.0.0/16 [90/2172416] via 172.17.1.5, 5d22h, Serial0/0

[90/2172416] via 172.17.1.5, 5d22h, Serial4/0:0

[90/2172416] via 172.17.1.5, 5d22h, Serial3/1:0

172.16.0.0/24 is subnetted, 2 subnets

S 172.16.129.0 [1/0] via 172.16.1.5

C 172.16.1.0 is directly connected, FastEthernet0/0.10

D 172.19.0.0/16 [90/2682112] via 172.17.1.5, 5d19h, Serial3/1:0

[90/2682112] via 172.17.1.5, 5d19h, Serial4/0:0

[90/2682112] via 172.17.1.5, 5d19h, Serial0/0

D 172.21.0.0/16 [90/2693120] via 172.17.1.5, 5d22h, Serial0/0

[90/2693120] via 172.17.1.5, 5d22h, Serial4/0:0

[90/2693120] via 172.17.1.5, 5d22h, Serial3/1:0

D 172.20.0.0/16 [90/2684416] via 172.17.1.5, 5d22h, Serial0/0

[90/2684416] via 172.17.1.5, 5d22h, Serial4/0:0

[90/2684416] via 172.17.1.5, 5d22h, Serial3/1:0

D 172.24.0.0/16 [90/2684416] via 172.17.1.5, 21:09:14, Serial3/1:0

[90/2684416] via 172.17.1.5, 21:09:14, Serial0/0

[90/2684416] via 172.17.1.5, 21:09:14, Serial4/0:0

S 172.31.0.0/16 [1/0] via 172.16.1.5

S 192.168.11.0/24 [1/0] via 172.16.1.5

10.0.0.0/8 is variably subnetted, 27 subnets, 3 masks

S 10.0.0.0/16 is directly connected, Serial4/3:0

C 10.10.11.0/24 is directly connected, FastEthernet0/1

C 10.0.0.20/30 is directly connected, Serial4/3:0

S 10.10.152.0/24 [1/0] via 172.16.1.5

D 10.10.154.0/24 [90/3205120] via 172.17.1.5, 5d22h, Serial0/0

[90/3205120] via 172.17.1.5, 5d22h, Serial4/0:0

[90/3205120] via 172.17.1.5, 5d22h, Serial3/1:0

D 10.10.158.0/24 [90/2684416] via 172.17.1.5, 5d13h, Serial3/1:0

[90/2684416] via 172.17.1.5, 5d13h, Serial0/0

[90/2684416] via 172.17.1.5, 5d13h, Serial4/0:0

D 10.10.160.0/24 [90/3196416] via 172.17.1.5, 5d19h, Serial3/1:0

[90/3196416] via 172.17.1.5, 5d19h, Serial4/0:0

[90/3196416] via 172.17.1.5, 5d19h, Serial0/0

D 10.10.161.0/24 [90/3196416] via 172.17.1.5, 5d19h, Serial3/1:0

[90/3196416] via 172.17.1.5, 5d19h, Serial4/0:0

[90/3196416] via 172.17.1.5, 5d19h, Serial0/0

D 10.10.162.0/24 [90/2172416] via 10.10.162.1, 6d16h, Serial1/0:0

D 10.10.163.0/24 [90/2684416] via 172.17.1.5, 2d02h, Serial3/1:0

[90/2684416] via 172.17.1.5, 2d02h, Serial4/0:0

[90/2684416] via 172.17.1.5, 2d02h, Serial0/0

S* 0.0.0.0/0 [1/0] via 172.16.1.2

[Richard Burts]

Jerry

Your original post gave the address of your laptop as 172.16.1.60. The routing table you supplied show this is connected to FastEthernet0/0.10. So it might be helpful if you would post the config of that interface.

It would also be helpful if you would check and see if the IP address and MAC from your laptop show up in the ARP table of this router. This would demonstrate a basic level of communication - or would explain why communication is not happening.

You have described the problem as not being able to ping to your laptop. You have not indicated whether you are having problems getting to things from your laptop. Perhaps you can clarify whether your laptop can access network resources.

As other have pointed out one possibility of the problem might be a firewall running on your laptop which is not allowing pings. Can you verify whether there is a firewall running on your laptop.

HTH

Rick