LAN Trouble

[jouk]

In my LAN /27 i have about 10 hosts (real addressing) and router Cisco 2620. Each host have this router as default gateway. Cisco 2620 have defaulte route to another one which connect to the internet.

Problem:

Some hosts from my LAN can not ping ethernet interface of Cisco 2620 and any thing in Internet. Here is the output of sh arp:

Internet 192.168.49.1 - 0004.dd54.d860 ARPA FastEthernet0/0

Internet 194.145.171.25 7 0017.31c5.1afd ARPA FastEthernet0/0

Internet 194.145.171.16 0 Incomplete ARPA

Internet 194.145.171.20 7 0002.a5bd.5c7b ARPA FastEthernet0/0

Internet 194.145.171.22 7 0001.6ca8.eec3 ARPA FastEthernet0/0

Internet 194.145.171.23 7 0015.f2eb.fa84 ARPA FastEthernet0/0

Internet 194.145.171.8 1 0002.a401.62da ARPA FastEthernet0/0

Internet 194.145.171.9 3 0011.098d.b94f ARPA FastEthernet0/0

Internet 194.145.171.14 6 0011.098d.bbf5 ARPA FastEthernet0/0

Internet 194.145.171.1 - 0004.dd54.d860 ARPA FastEthernet0/0

Internet 194.145.171.4 0 Incomplete ARPA

Host 194.145.171.16 does not pinging from internet and from Cisco 2620

How can i solve the problem ?

[ankbhasi]

Hi Jouk,

As you said your host cannot ping the ethernet interface of router which means it cannot ping its gateway.

Also in ARP output you pastes it has incomplete arp entry

"Internet 194.145.171.16 0 Incomplete ARPA "

Can you check the connectivoty between your host and router and also if possible try adding a static arp entry for this host and see if that resolves the issue.

Regards,

Ankur

[jouk]

i checked connectivity and add static arp entry:

arp 194.145.171.16 0011.098d.bbf2 ARPA

but it did not help

[zubairjalal]

what is the ip of your gateway router

[jouk]

on the ethernet of cisco 2620 : 194.145.171.1

[ankbhasi]

Hi Jouk,

From the same kachine can you ping any other machine in same subnet? ALso is the the only machine in problem? Do you have any firewall installed on this machine? Is it windows xp machine?

Regards,

Ankur

[jouk]

This host can ping the other hosts in LAN exept router, there are no firewall. It is Win2K machine and icmp are enable on it