10 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Dear friends
I use RedHat 6.5, which sets the gateway in the configuration file / etc / sysconfig / network as GATEWAY = 192.168.1.26, and the gateway in the configuration file / etc / sysconfig / network-scripts / ifcfg-eth11 as GATEWAY = 192.168.1.256. The two gateways are different.... (6 Replies)
Discussion started by: tanpeng
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2. UNIX for Advanced & Expert Users
I have setup a Linux machine on my server but for some reason Im unable to reach my default gateway. This is causing me to not communicate with the outside world (unable to connect to CentOS repos)
# ifconfig
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet... (3 Replies)
Discussion started by: Junaid Subhani
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3. AIX
Hi,
I installed AIX 7.1 on a blade though (hmc with vio). I can ping the IP address, but not the gateway. Is there anything that I should configure?
Is there anything that I have to check with vio setting or Am I missing any configuration?
Please let me know further.
Thank you (5 Replies)
Discussion started by: pjeedu2247
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4. Red Hat
Hi,
Here is the issue: There are 2 identical systems in the same subnet here. They can ping and ssh each other. One can ping the default gateway and one can not with error '... icmp_seq Destination Host Unreachable'. I can't find any difference between the two systems in terms of network... (4 Replies)
Discussion started by: aixlover
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5. AIX
I just reinstalled a fresh install of 5300 07 on an old 44p model 170, after installing I set an IP Address on en2 and I tried to the ping default gateway, no response. I tried a
startsrc -g tcpip
... and then I can ping the default gateway. I broke the ping and tried again to ping. I cannot... (1 Reply)
Discussion started by: asyed123
1 Replies
6. UNIX for Dummies Questions & Answers
I have NCR MP-RAS unix. I have been trying for several months to get our network working since we had never used it before. I have setup all routes that I can think of. I know it has something to do with the routing table, because out of sheer luck I was able to get it working, and than like a... (4 Replies)
Discussion started by: Rutgerncas
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7. Red Hat
I know the subject line is very similar to: destination host unreachable
but the problem with my machine appears to be somewhat different from that thread. apologies if I missed something from there.
We recently moved a machine physically and from one subnet to another . I used... (1 Reply)
Discussion started by: mirage
1 Replies
8. AIX
Hello,
I am new to Unix :D and have been trying to configure an AIX server running 5.3. I used smitty or smit to configure interface 0 on the server. I am able to ping the IP I set, however I am still unable to ping the gateway. I configured the IP by navigating to Communications Applications... (6 Replies)
Discussion started by: cdub50
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9. IP Networking
Hello this is my first post at this forum.
Apologize for my lack of network understanding
but Im posting to learn.
I have a problem reaching default gateway 10.18.110.1
If I use my laptop I can ping 10.18.110.1 but with our red hat multihomed server the gateway does not respond to ping.
cat... (11 Replies)
Discussion started by: vettec3
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10. IP Networking
We are unable to bring one of our linux boxes into the network once it was restarted. But once we stop and start the network service. We are able to ping the gateway and get into network. After a minute or two we get the following reponse for the ping command
64 bytes from 124.168.215.40:... (6 Replies)
Discussion started by: chrisanto_2000
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TRACEROUTE6(8) BSD System Manager's Manual TRACEROUTE6(8)
NAME
traceroute6 -- print the route IPv6 packets will take to a network node
SYNOPSIS
traceroute6 [-dIlnNrvU] [-f firsthop] [-g gateway] [-m hoplimit] [-p port] [-q probes] [-s src] [-w waittime] target [datalen]
DESCRIPTION
The traceroute6 utility uses the IPv6 protocol hop limit field to elicit an ICMPv6 TIME_EXCEEDED response from each gateway along the path to
some host.
The only mandatory parameter is the destination host name or IPv6 address. The default probe datagram carries 12 bytes of payload, in addi-
tion to the IPv6 header. The size of the payload can be specified by giving a length (in bytes) after the destination host name.
Other options are:
-d Debug mode.
-f firsthop
Specify how many hops to skip in trace.
-g gateway
Specify intermediate gateway (traceroute6 uses routing header).
-I Use ICMP6 ECHO instead of UDP datagrams.
-l Print both host hostnames and numeric addresses. Normally traceroute6 prints only hostnames if -n is not specified, and only numeric
addresses if -n is specified.
-m hoplimit
Specify maximum hoplimit, up to 255. The default is 30 hops.
-n Do not resolve numeric address to hostname.
-N Use a packet with no upper layer header for the probes, instead of UDP datagrams.
-p port
Set UDP port number to port.
-q probes
Set the number of probe per hop count to probes.
-r Bypass the normal routing tables and send directly to a host on an attached network. If the host is not on a directly-connected net-
work, an error is returned. This option corresponds to the SO_DONTROUTE socket option; it can be used to ping a local host through
an interface that has no route through it (e.g., after the interface was dropped by a routing daemon).
-s src Src specifies the source IPv6 address to be used.
-U Use UDP datagrams for the probes. This is the default.
-v Be verbose.
-w waittime
Specify the delay time between probes.
This program prints the route to the given destination and the round-trip time to each gateway, in the same manner as traceroute.
Here is a list of possible annotations after the round-trip time for each gateway:
!N Destination Unreachable - No Route to Host.
!P Destination Unreachable - Administratively Prohibited.
!S Destination Unreachable - Not a Neighbour.
!A Destination Unreachable - Address Unreachable.
! This is printed if the hop limit is <= 1 on a port unreachable message. This means that the packet got to the destination, but
that the reply had a hop limit that was just large enough to allow it to get back to the source of the traceroute6. This was
more interesting in the IPv4 case, where some IP stack bugs could be identified by this behaviour.
RETURN VALUES
The traceroute6 utility will exit with 0 on success, and non-zero on errors.
SEE ALSO
ping(8), ping6(8), traceroute(8)
HISTORY
The traceroute6 utility first appeared in WIDE hydrangea IPv6 protocol stack kit.
BSD
May 17, 1998 BSD
