routing error

[aruns_s]

Hi Gurus,

Would u please help me in finding out why I am not able to ping to default gateway?Routing table has not changed for last few years.

# netstat -in
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
lan1 1500 10.2.5.0 10.2.5.112 71887853 0 215242774 0 0
lan0 1500 10.0.148.0 10.0.148.5 182901011 0 185154008 0 0
lo0 4136 127.0.0.0 127.0.0.1 10880805 0 10880837 0 0
# netstat -rn
Routing tables
Destination Gateway Flags Refs Interface Pmtu
127.0.0.1 127.0.0.1 UH 0 lo0 4136
10.2.5.112 10.2.5.112 UH 0 lan1 4136
10.0.148.5 10.0.148.5 UH 0 lan0 4136
10.0.148.0 10.0.148.5 U 2 lan0 1500
10.2.5.0 10.2.5.112 U 2 lan1 1500
127.0.0.0 127.0.0.1 U 0 lo0 0
default 10.0.148.10 UG 0 lan0 0
# ping 10.0.148.10
PING 10.0.148.10: 64 byte packets

----10.0.148.10 PING Statistics----
2 packets transmitted, 0 packets received, 100% packet loss

[Ludovic Derlyn]

hi,

Have you tested your connectivity with linkloop ?

to execute this :

lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#
0/1/2/0 0x001A4B05E800 0 UP lan0 snap0 1 ETHER Yes 119
0/1/2/1 0x001A4B05E801 1 UP lan1 snap1 2 ETHER Yes 119
0/3/1/0/6/0 0x0015605E62A2 2 UP lan2 snap2 3 ETHER Yes 119
0/3/1/0/6/1 0x0015605E62A3 3 UP lan3 snap3 4 ETHER Yes 119
0/4/1/0/6/0 0x0015605E7240 4 UP lan4 snap4 5 ETHER Yes 119
0/4/1/0/6/1 0x0015605E7241 5 UP lan5 snap5 6 ETHER Yes 119

and linkloop

linkloop -i 3 0x0015605e62a3
Link connectivity to LAN station: 0x0015605e62a3
-- OK

if it's ok ,check your netmask

regards

L-DERLYN

[Ludovic Derlyn]

hi,

for most precissions, lanscan show lan and linkloop test connectivity

for mat of linkloop is :

linkloop -i "ppa number" "linkaddress"

in my example, i have tested lan 3

see also if arp -a give an enry for default route

regards
L-DERLYN

[aruns_s]

linkloop connecitivity found okay,
Arp cache has got an entry for default gateway

[Ludovic Derlyn · Accepted solution]

hi

Netwask is ok ?
have you try to ping your server ?

what is the result of traceroute -d "default gateway" ?

Regards

L-DERLYN

[Ludovic Derlyn]

hi

Netwask is ok ?
have you try to ping your server ?

what is the result of traceroute -d "default gateway" ?

have you checked if you are in 100 fiull for example or half duplex on the both ?

Regards

L-DERLYN

[Enrico P.]

Hi,
is the gateway working? Or better, if you have ping problem only with the gateway perhaps there is a firewall that close the ping.
If the connectivity with the linkloop command is ok ask to network team for the network configuration.

Enrico

[aruns_s]

Hi All,
Thanks for the reply. Both network and firewall team are telling that this is happening because of the server issue. I do not understand why there are telling like that.
I have noticed that this gateway ip is pingable from another server, ruling out problem with gateway device.Only difference I can see from other server is in the configuration of lan card speed.The server from which gateway is not pingable is having 100FD MANUAL setting whereas the other server(from which same gatewy is pingable) is having 100FD AUTONEGOFF setting. Would u please advise whether this is causing the issue?Thank you.