03-01-2011
Your default gateway is the DNS not a router.
9 More Discussions You Might Find Interesting
1. IP Networking
I am running AIX, and just newly installed this sytem.
I thought I had all the settings correct, but may be wrong.
I set up the DNS to point to my router which has DNS relay.
Router IP is 192.168.0.1
AIX server IP is 192.168.0.164
I can ping my router with no problem. When I do a... (6 Replies)
Discussion started by: mrciano1
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2. UNIX for Advanced & Expert Users
I want to block ping on a linuxbox to any other address where it would go to the default gateway.
vmdebianamd64:/etc/tcng# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
198.9.200.0 * 255.255.255.0 U 0 ... (1 Reply)
Discussion started by: progressdll
1 Replies
3. Solaris
hey guys, how to add soalris box as a microsoft DNS Client ?
and how to register in the microsoft DNS ??
i managed to query from the DNS server after adding /etc/resolve.conf and editing /etc/nsswitch.conf
but i need to register the soalris server (dns Client) into Microsoft DNS automatically.... (3 Replies)
Discussion started by: mduweik
3 Replies
4. Solaris
Hi all.
I have one Sun Server T2000, then i want to running DNS service in that.
So I don't know what's cPanel program which can help me manage my DNS server.
Webmin is included in Solaris 10 - but i think that it's not enough flexible for my management.
Anyone can help me.
... (2 Replies)
Discussion started by: quan0509
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5. Red Hat
I am trying to setup a CentOS 6.2 server that will be doing 3 things DHCP, DNS & Samba for a very small office (2 users). The idea being this will replace a very old Win2k server. The users are all windows based clients so only the server will be Linux based.
I've installed CentOS 6.2 with... (4 Replies)
Discussion started by: FireBIade
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6. Solaris
Hello All,
Host - Windows 7 64 BIT
Guest OS - Solaris 10 64 on VMWARE workstation
Problem : I can not ping solaris VM from my host OS. please suggest the solution.
Host OS:ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : INPS01900LT
... (5 Replies)
Discussion started by: sunil_1111
5 Replies
7. Solaris
Hi all,
I always thought DNS server = provide DNS response (host to ip / ip to host) to DNS client (which send DNS resolve request).
So in my solaris 10 box, i setup /etc/resolv/conf, /etc/nsswitch.conf (added in dns) etc.
Yes, i am able to dig and nslookup. But.. am i a DNS client ?
... (5 Replies)
Discussion started by: javanoob
5 Replies
8. IP Networking
I have vmware on my windows PC ( hostname : acer ).
vmware has RHEL 7 ( hostname : rhel7 ) installed recently.
RHEL IP configuration
IP : 192.168.5.128
Netmask : 255.255.255.0
ssh to rhel7 works from acer using putty
resolve.conf
cat /etc/resolv.conf
nameserver 192.168.5.1
host... (12 Replies)
Discussion started by: hiten.r.chauhan
12 Replies
9. Solaris
Hi,
We have built a new server (RHEL VM)and added that IP/hostname into dns zone configs file on DNS server (Solaris 10). Reloaded the configuration using
and added nameserver into resolv.conf on client. But when I am trying nslookup, its not getting resolved. The nameserver is not able to... (8 Replies)
Discussion started by: snchaudhari2
8 Replies
IRDPD(8) System Manager's Manual IRDPD(8)
NAME
irdpd - internet router discovery protocol daemon
SYNOPSIS
irdpd [-bsd] [-U udp-device] [-I ip-device] [-o priority-offset]
DESCRIPTION
Irdpd looks for routers. This should be a simple task, but many routers are hard to find because they do not implement the router discov-
ery protocol. This daemon collects information that routers do send out and makes it available.
At startup irdpd sends out several router solicitation broadcasts. A good router should respond to this with a router advertisement.
If a router advertisement arrives then no more solicitations are sent. The TCP/IP server has filled its routing table with the info from
the advertisement, so it now has at least one router. If the advertisement is sent by a genuine router (the sender is in the table) then
the irdpd daemon goes dormant for the time the advert is valid. Routers send new adverts periodically, keeping the daemon silent.
Otherwise irdpd will listen for RIP (Router Information Protocol) packets. These packets are sent between routers to exchange routing
information. Irdpd uses this information to build a routing table.
Every now and then a router advertisement is sent to the local host to give it router information build from the RIP packets.
Lastly, if a router solicitation arrives and there is no router around that sends advertisements, then irdpd sends an advertisement to the
requestor. Note that this is a direct violation of RFC1256, as no host is supposed to sent those adverts. But alas the world is not
always perfect, and those adverts make booting hosts find routers quickly with this help from their brothers. (Of course, they will lose
the router soon if they don't have an irdpd daemon themselves.)
OPTIONS
-b Broadcast advertisements instead of sending them to the local host only. This may be used to keep (non-Minix) hosts alive on a net
without adverts.
-s Be silent, do not send advertisements to hosts that ask for them.
-d Debug mode, tell where info is coming from and where it is sent. Debugging can also be turned on at runtime by sending signal
SIGUSR1 or turned off with SIGUSR2.
-o priority-offset
Offset used to make the gateway's preferences collected from RIP packets look worse than those found in genuine router adverts. By
default -1024.
SEE ALSO
set_net_default(8), boot(8), inetd(8), nonamed(8), rarpd(8).
BUGS
Under standard Minix this daemon can't listen to two both IRDP and RIP at the same time, so it starts out with IRDP. It switches over to
RIP if it can't find a router, or if it threatens to lose its router. It does not switch back.
Irdpd may help a host that should not be helped, i.e. if it doesn't have an irdpd daemon with RIP collecting trickery. It will make System
Administrators pull out their remaining hair trying to find out why a host can access outside networks for a some time after boot, but goes
blind afterwards.
AUTHOR
Kees J. Bot (kjb@cs.vu.nl)
IRDPD(8)