by Hi,
Would much appreciate your advice:
ping contacts laptop from server, but laptop fails to ping server!
My problem is getting a laptop under Mdk 8.1 and PCMCIA package
to talk to a connected server PC under Mdk8.2 as a member of a local
intranet.
The server has two ethernet cards, eth1 connected to the PCMCIA card of the
laptop by thin ethernet (with terminators) and eth0 (connects to an Alcatel
ADSL modem, but ADSL is not up for any of the tests described below).
Note below results listed for contacting the laptop from the server:
1. when eth0 was configured for DHCP on IP 192.168.0.1;
2. when eth0 was configured to be manual on IP 192.168.0.1.
In case 1 ping to the laptop 192.168.0.31 is successful,
in case 2 unsuccessful.
In either case the server cannot be pinged successfully from the laptop.
(The manual configuration was a bad idea, ADSL then claims to connect
but does not resolve).
1.
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:E0:29:11:C3:69
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2001 errors:0 dropped:0 overruns:0 frame:0
TX packets:1994 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:685403 (669.3 Kb) TX bytes:91672 (89.5 Kb)
Interrupt:10 Base address:0x1000
eth1 Link encap:Ethernet HWaddr 00:00:F8:02:4F:0A
inet addr:192.168.0.11 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:158 errors:0 dropped:0 overruns:0 frame:0
TX packets:158 errors:162 dropped:0 overruns:0 carrier:327
collisions:0 txqueuelen:100
RX bytes:21569 (21.0 Kb) TX bytes:21551 (21.0 Kb)
Interrupt:15 Base address:0x1080
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:429 errors:0 dropped:0 overruns:0 frame:0
TX packets:429 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:56608 (55.2 Kb) TX bytes:56608 (55.2 Kb)
ppp0 Link encap:Point-to-Point Protocol
inet addr:144.137.124.151 P-t-P:172.31.26.24
Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:562 errors:0 dropped:0 overruns:0 frame:0
TX packets:556 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:586638 (572.8 Kb) TX bytes:36251 (35.4 Kb)
# more /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
BOOTPROTO=static
IPADDR=192.168.0.11
NETMASK=255.255.255.0
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
ONBOOT=yes
#
DEVICE=eth0
BOOTPROTO=dhcp
IPADDR=192.168.0.1
NETMASK=255.255.255.0
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
ONBOOT=yes
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth1
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
[ping contact is established to 192.168.0.31, from 192.168.0.11]
2.
After changing 192.168.0.1 from eth0 from dhcp to manual by NetConf and
logging
on again, the following results
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:E0:29:11:C3:69
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:0 (0.0 b) TX bytes:336 (336.0 b)
Interrupt:10 Base address:0x1000
eth1 Link encap:Ethernet HWaddr 00:00:F8:02:4F:0A
inet addr:192.168.0.11 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1226 errors:0 dropped:0 overruns:0 frame:0
TX packets:1092 errors:6 dropped:0 overruns:0 carrier:15
collisions:0 txqueuelen:100
RX bytes:165395 (161.5 Kb) TX bytes:148213 (144.7 Kb)
Interrupt:15 Base address:0x1080
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:4456 errors:0 dropped:0 overruns:0 frame:0
TX packets:4456 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:312155 (304.8 Kb) TX bytes:312155 (304.8 Kb)
# cd /etc
# ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) from 192.168.0.1 : 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=0 ttl=255 time=210 usec
64 bytes from 192.168.0.1: icmp_seq=1 ttl=255 time=132 usec
64 bytes from 192.168.0.1: icmp_seq=2 ttl=255 time=127 usec
--- 192.168.0.1 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.127/0.156/0.210/0.039 ms
PING 192.168.0.31 (192.168.0.31) from 192.168.0.1 : 56(84) bytes of data.
From 192.168.0.1: Destination Host Unreachable
From 192.168.0.1: Destination Host Unreachable
From 192.168.0.1: Destination Host Unreachable
From 192.168.0.1: Destination Host Unreachable
From 192.168.0.1: Destination Host Unreachable
From 192.168.0.1: Destination Host Unreachable
--- 192.168.0.31 ping statistics ---
8 packets transmitted, 0 packets received, +6 errors, 100% packet loss
# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
192.168.0.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
# more /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE="eth0"
BOOTPROTO="none"
IPADDR="192.168.0.1"
NETMASK="255.255.255.0"
NETWORK=192.168.0.0
BROADCAST=192.168.0.255
ONBOOT="yes"
IPXNETNUM_802_2=""
IPXPRIMARY_802_2="no"
IPXACTIVE_802_2="no"
IPXNETNUM_802_3=""
IPXPRIMARY_802_3="no"
IPXACTIVE_802_3="no"
IPXNETNUM_ETHERII=""
IPXPRIMARY_ETHERII="no"
IPXACTIVE_ETHERII="no"
IPXNETNUM_SNAP=""
# ping 192.168.0.11
PING 192.168.0.11 (192.168.0.11) from 192.168.0.11 : 56(84) bytes of data.
64 bytes from 192.168.0.11: icmp_seq=0 ttl=255 time=210 usec
64 bytes from 192.168.0.11: icmp_seq=1 ttl=255 time=128 usec
64 bytes from 192.168.0.11: icmp_seq=2 ttl=255 time=128 usec
64 bytes from 192.168.0.11: icmp_seq=3 ttl=255 time=128 usec
64 bytes from 192.168.0.11: icmp_seq=4 ttl=255 time=127 usec
--- 192.168.0.11 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.127/0.144/0.210/0.033 ms
IPXPRIMARY_SNAP="no"
IPXACTIVE_SNAP="no"
--
H. Hudson
Sydney, Australia