04-16-2009
permanently add static route
I have a machine with an interface that has two different addresses on CentOS 5
eth0: 10.20.21.77
eth0:1 141.218.1.221
If I issue this command I get the result I'm looking for.
/sbin/route add -net 141.218.1.0 netmask 255.255.255.0 gw 10.20.21.77
ip route show dev eth0
141.218.1.0/24 via 10.20.21.77 scope link
141.218.1.0/24 proto kernel scope link src 141.218.1.221
10.20.21.0/24 proto kernel scope link src 10.20.21.221
169.254.0.0/16 scope link
default via 10.20.21.1
Now I reboot the machine and the route goes away, I've tried creating a file in /etc/sysconfig/network-scripts/route-eth0 that contains
141.218.1.0/24 via 10.20.21.77
Also tried:
141.218.1.0/24 via 10.20.21.77 dev eth0
On a reboot it looks like this...
ip route show dev eth0
141.218.1.0/24 proto kernel scope link src 141.218.1.221
10.20.21.0/24 proto kernel scope link src 10.20.21.77
169.254.0.0/16 scope link
default via 10.20.21.1
Running ifup-routes by hand results with:
./ifup-routes eth0
RTNETLINK answers: File exists
Thanks for any help.
Last edited by beaker457; 04-16-2009 at 11:52 AM..
10 More Discussions You Might Find Interesting
1. IP Networking
Hi,
I have a machine that sits on 10.2 network.
I need to ssh from this to another box that is on both 10.125 & 10.140 VLANs
what should I need to do?
Thanks! (3 Replies)
Discussion started by: chaandana
3 Replies
2. HP-UX
I want to make static route how would I proceed?
I'm using "route add DestinationIP gatewayIP hop to 1
I would like to make this permanent, so when it reboots I don't want to loose it, would I do this in netconf file? If so where?
I did a search got this site, it didn't help much. ... (2 Replies)
Discussion started by: catwomen
2 Replies
3. UNIX for Dummies Questions & Answers
Hi,
Request you to please tell me the command or the process to add the static route in redhat linux.
Thanks in Advance.
Regards
Arun (2 Replies)
Discussion started by: Arun.Kakarla
2 Replies
4. AIX
#netstat -nr (shows the following with more static routes)
192.168.18.202 10.129.155.1 UGH 0 29 en0 - -
and i just want to remove the above one
i tried
#smitty rmroute
destination type= net
dest add = 192.168.18.202
default gateway= 10.129.155.1
net... (1 Reply)
Discussion started by: pchangba1
1 Replies
5. IP Networking
Hi guys,
sorry for asking noob question.
When do we really need to add a static route on the server?
I encounter this situation whereby a client trigger a network packet to the destination but the destination does not know how to return the traffic back to the client (source).
The issue was... (4 Replies)
Discussion started by: DrivesMeCrazy
4 Replies
6. AIX
Dear all,
I Try to remove a static route with smitty, but recieve this error:
Method error (/usr/lib/methods/chginet):
0514-009 Cannot delete an object from the device
configuration database.
0821-216 chginet: Cannot delete route (net,192.168.30.101,192.168.30.1)... (2 Replies)
Discussion started by: hrkama
2 Replies
7. Red Hat
Hi,
Using Centos, under /etc/rc5.d, I wrote a quick script to add my static route when the server gets rebooted. The script doesn't get executed. I did set the permission to 777. After I reboot the server, if I execute, it works manually.
I do this all the time on Solaris and never had... (5 Replies)
Discussion started by: samnyc
5 Replies
8. AIX
Anyone know how to edit a static route in AIX? I find myself deleting and then recreating the route with the new information. Would be nice to know how to edit the route. (3 Replies)
Discussion started by: bbbngowc
3 Replies
9. Red Hat
Hello Guys..
I am facing this weird problem of static route not added after reboot!!
Following is my route-<interface> file..
# cat /etc/sysconfig/network-scripts/route-eth0
ADDRESS0=172.31.0.1
NETMASK0=255.255.255.255
GATEWAY0=192.168.208.1
ADDRESS1=172.31.15.2... (3 Replies)
Discussion started by: parth_buch
3 Replies
10. IP Networking
Hi all,
This may be the basic question of Routing but I am a sort of new to networking so I am asking.
Do I need to put route for my router's LAN port ip to WAN (serial) port ip Or the router itself can communicate between its ports without routes.
lan (172.26.40.5) ... (3 Replies)
Discussion started by: dextergenious
3 Replies
LEARN ABOUT OSX
tc-mirred
Mirror/redirect action in tc(8) Linux Mirror/redirect action in tc(8)
NAME
mirred - mirror/redirect action
SYNOPSIS
tc ... action mirred DIRECTION ACTION [ index INDEX ] dev DEVICENAME
DIRECTION := { ingress | egress }
ACTION := { mirror | redirect }
DESCRIPTION
The mirred action allows packet mirroring (copying) or redirecting (stealing) the packet it receives. Mirroring is what is sometimes
referred to as Switch Port Analyzer (SPAN) and is commonly used to analyze and/or debug flows.
OPTIONS
ingress
egress Specify the direction in which the packet shall appear on the destination interface.
mirror
redirect
Define whether the packet should be copied (mirror) or moved (redirect) to the destination interface.
index INDEX
Assign a unique ID to this action instead of letting the kernel choose one automatically. INDEX is a 32bit unsigned integer greater
than zero.
dev DEVICENAME
Specify the network interface to redirect or mirror to.
EXAMPLES
Limit ingress bandwidth on eth0 to 1mbit/s, redirect exceeding traffic to lo for debugging purposes:
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: u32
match u32 0 0
action police rate 1mbit burst 100k conform-exceed pipe
action mirred egress redirect dev lo
Mirror all incoming ICMP packets on eth0 to a dummy interface for examination with e.g. tcpdump:
# ip link add dummy0 type dummy
# ip link set dummy0 up
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: protocol ip
u32 match ip protocol 1 0xff
action mirred egress mirror dev dummy0
Using an ifb interface, it is possible to send ingress traffic through an instance of sfq:
# modprobe ifb
# ip link set ifb0 up
# tc qdisc add dev ifb0 root sfq
# tc qdisc add dev eth0 handle ffff: ingress
# tc filter add dev eth0 parent ffff: u32
match u32 0 0
action mirred egress redirect dev ifb0
SEE ALSO
tc(8), tc-u32(8)
iproute2 11 Jan 2015 Mirror/redirect action in tc(8)