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Hi everyone,
I am not really a newbie but I think this may be a newbie problem. Here's the story. I have been happily running Arch on my main Desktop PC for over a year now and everything has been working well with it. During this time I also had two Ubuntu installs(one is a Server and the other was an HTPC) running on the network along with various other devices(Xbox, Playstation3, a couple media streamers) and all the devices seemed to coexist fine and talk to each other. Recently I pulled the Ubuntu based HTPC out of service. I stripped it down and moved some components around between my PC's and am now setting up the new PC to replace my Ubuntu server. I decided to use Arch as the basis for the new improved server. So currently I have 3 pc's hooked up to the network and they are named as follows:
Ubuntu Server - ouldserver
Arch Desktop Install - hal
New Arch Server - deathstar
From ouldserver I can ping both Arch Install, transfer files back and forth and SSH into either.
From both Arch installs I can ping, SSH and transfer files to ouldserver.
I cannot ping, SSH or transfer files between either Arch machine.
Pinging from deathstar to hal
[kevin@deathstar ~]$ ping hal
PING hal (192.168.15.2) 56(84) bytes of data.
From deathstar (192.168.15.10) icmp_seq=1 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=2 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=3 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=4 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=5 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=6 Destination Host Unreachable
^C
--- hal ping statistics ---
8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7032ms
, pipe 3Pinging from hal to deathstar
[kevin@hal ~]$ ping deathstar
PING deathstar (192.168.15.10) 56(84) bytes of data.
From hal (192.168.15.2) icmp_seq=1 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=2 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=3 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=4 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=5 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=6 Destination Host Unreachable
^C
--- deathstar ping statistics ---
8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7031ms
, pipe 3Deathstar conf files
Networking section of rc.conf
# -----------------------------------------------------------------------
# NETWORKING
# -----------------------------------------------------------------------
#
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
#
HOSTNAME="deathstar"
# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
#
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
# - prefix an entry in INTERFACES with a ! to disable it
# - no hyphens in your interface names - Bash doesn't like it
#
# DHCP: Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below
#
lo="lo 127.0.0.1"
eth0="dhcp"
INTERFACES=(lo eth0)
# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
# - prefix an entry in ROUTES with a ! to disable it
#
gateway="default gw 192.168.15.1"
ROUTES=(!gateway)
#
# /etc/hosts.allow
#
nfsd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
portmap: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
lockd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
rquotad: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
mountd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
statd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
sshd: 192.168.15.0/255.255.255.0,10.8.0.0/255.255.255.0
# End of file
#
# /etc/hosts.deny
#
ALL: ALL: DENY
# End of fileHal's conf files are identical for our intents here. Does anyone have any ideas what could be wrong?
Thanks,
Kevin
Last edited by ould (2008-06-13 00:50:05)
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Can you do the following:
from both boxes ping the ouldserver. After a successful ping, try to ping each other.
Run: arp -n
paste the output here.
Also, from Arch boxes the output of ifconfig -a and route -n would be useful to make sure nothing funky is going on.
Feel free to sanitize any public IPs in ifconfig/route
*edit: Also, how are they physically linked up?
chad
Last edited by dwi (2008-06-12 14:53:28)
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Can you do the following:
from both boxes ping the ouldserver. After a successful ping, try to ping each other.
From Deasthstar
[kevin@deathstar ~]$ ping ouldserver
PING ouldserver (192.168.15.7) 56(84) bytes of data.
64 bytes from ouldserver (192.168.15.7): icmp_seq=1 ttl=64 time=0.444 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=2 ttl=64 time=0.167 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=3 ttl=64 time=0.159 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=4 ttl=64 time=0.163 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=5 ttl=64 time=0.161 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=6 ttl=64 time=0.136 ms
^C
--- ouldserver ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5000ms
rtt min/avg/max/mdev = 0.136/0.205/0.444/0.107 ms
[kevin@deathstar ~]$ ping hal
PING hal (192.168.15.2) 56(84) bytes of data.
From deathstar (192.168.15.10) icmp_seq=1 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=2 Destination Host Unreachable
From deathstar (192.168.15.10) icmp_seq=3 Destination Host Unreachable
^C
--- hal ping statistics ---
5 packets transmitted, 0 received, +3 errors, 100% packet loss, time 4011ms
, pipe 3From hal
[kevin@hal ~]$ ping ouldserver
PING ouldserver (192.168.15.7) 56(84) bytes of data.
64 bytes from ouldserver (192.168.15.7): icmp_seq=1 ttl=64 time=0.176 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=2 ttl=64 time=0.174 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=3 ttl=64 time=0.177 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=4 ttl=64 time=0.176 ms
64 bytes from ouldserver (192.168.15.7): icmp_seq=5 ttl=64 time=0.175 ms
^C
--- ouldserver ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 3998ms
rtt min/avg/max/mdev = 0.174/0.175/0.177/0.014 ms
[kevin@hal ~]$ ping deathstar
PING deathstar (192.168.15.10) 56(84) bytes of data.
From hal (192.168.15.2) icmp_seq=1 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=2 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=3 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=4 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=5 Destination Host Unreachable
From hal (192.168.15.2) icmp_seq=6 Destination Host Unreachable
^C
--- deathstar ping statistics ---
8 packets transmitted, 0 received, +6 errors, 100% packet loss, time 7031ms
, pipe 3Run: arp -n
paste the output here.
Also, from Arch boxes the output of ifconfig -a and route -n would be useful to make sure nothing funky is going on.
Feel free to sanitize any public IPs in ifconfig/route
chad
From Deathstar
[kevin@deathstar ~]$ arp -n
Address HWtype HWaddress Flags Mask Iface
192.168.15.4 ether 00:0D:4B:03:1F:2E C eth0
192.168.15.20 ether 00:FF:70:7B:9F:74 C eth0
[kevin@deathstar ~]$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:50:8D:91:8A:02
inet addr:192.168.15.10 Bcast:192.168.15.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:132560 errors:0 dropped:0 overruns:0 frame:0
TX packets:911 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:8079698 (7.7 Mb) TX bytes:101563 (99.1 Kb)
Interrupt:20
eth1 Link encap:Ethernet HWaddr 00:50:8D:91:8A:03
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:23 Base address:0x2000
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:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:15 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1632 (1.5 Kb) TX bytes:1632 (1.5 Kb)
[kevin@deathstar ~]$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.15.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.15.1 0.0.0.0 UG 0 0 0 eth0From hal
[kevin@hal ~]$ arp -n
Address HWtype HWaddress Flags Mask Iface
192.168.15.20 ether 00:FF:70:7B:9F:74 C eth0
192.168.15.7 ether 00:50:8D:45:56:5B C eth0
192.168.15.1 ether 00:18:F3:85:65:46 C eth0
192.168.15.10 (incomplete) eth0
192.168.15.4 ether 00:0D:4B:03:1F:2E C eth0
[kevin@hal ~]$ ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:14:85:22:4E:9D
inet addr:192.168.15.2 Bcast:192.168.15.255 Mask:255.255.255.0
inet6 addr: fe80::214:85ff:fe22:4e9d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:534115 errors:0 dropped:0 overruns:0 frame:0
TX packets:122709 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:57006495 (54.3 Mb) TX bytes:45069306 (42.9 Mb)
Interrupt:23 Base address:0x6000
eth1 Link encap:Ethernet HWaddr 00:14:85:23:04:0C
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:17
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:5049 errors:0 dropped:0 overruns:0 frame:0
TX packets:5049 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:1207053 (1.1 Mb) TX bytes:1207053 (1.1 Mb)
pan0 Link encap:Ethernet HWaddr 5A:06:67:39:29:92
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[kevin@hal ~]$ route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.15.0 * 255.255.255.0 U 0 0 0 eth0
169.254.0.0 * 255.255.0.0 U 0 0 0 eth0
default 192.168.15.1 0.0.0.0 UG 0 0 0 eth0Thanks Chad!!
Kevin
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Are you connecting all devices to a home network switch/router that provides DHCP? Or something complex?
I'm curious why deathstar doesn't even show the ARP entry for ouldserver, but can ping it. What was the timespan between pinging ouldserver & arp -n on deathstar?
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Are you connecting all devices to a home network switch/router that provides DHCP? Or something complex?
I'm curious why deathstar doesn't even show the ARP entry for ouldserver, but can ping it. What was the timespan between pinging ouldserver & arp -n on deathstar?
Hey Chad,
Yep my network is fairly simple. I have a DSL modem to a 4 port router, which feeds an 8-port switch which is temporarily connected to a 2nd 8-port switch in the office. The 2nd switch will be removed once Deathstar has been setup and replaces Ouldserver, as currently hal and deathstar are in the office during the setup. Maybe it is a problem with the 2nd switch as both Arch boxes are connected to the 2nd switch currently and nothing else is. That may be something I can try when I get home, but I don't think connecting the switches together should be a problem. I am connected from work through a VPN at the moment so I can't test that theory.
If I run "arp -n" right after I ping ouldserver from deathstar it shows up in the table. I may have let some time elapse between those commands the last time. I have a bunch of NFS and Samba shares on Ouldserver which hal connects to so I guess ouldserver stays in the arp table for hal. Whereas I don't have anything setup on Deathstar yet except the initial Arch installation.
Thanks again Chad
Kevin
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Removing the 2nd 8-port switch from the network seemed to solve the problem. Thanks for the help! Still not sure why having two switches would cause an issue but it's fixed so that's all that matters.
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