Hi All,
yesterday I was trying to add a network route to my solaris 8 host using 'route add'. Everytime I tried, I kept getting the response 'network is unreachable'.
I was trying all kinds of different methods, however I eventually got it to work after bouncing the interface that I was... (2 Replies)
Hi there,
I'm trying to configure an additional network interface on Solaris 8 (eri0). The interface has been activated, but all the frames are still routed to the current default interface (ce0) I've tried following command (with various syntaxes...) unsuccessfully so far:
# route add... (2 Replies)
Please , I have a problem
I have add a statis route on Solaris 10, but after this, the network interface of Server was Offline.
The system is in cluster mode (3.2)
route add -net 10.10.1.128 -netmask 255.255.255.128 10.10.1.51
-------------------
lo0:... (1 Reply)
Dear all,
I am a newbie in solaris and I need your advice.
I have a Solaris version 5.9 installed on Sunfire V240.
I am able to ssh the machine from putty remotely.
My problem is that I cannot see the display from KVM switch I have connected to it. I need also to be able to see the GUI... (2 Replies)
Hi, anyone has had experience in a static setting an IPv6 interface?, I'm trying accordance with the admin guide (ipv6 network configuration tasks), configure one interface in the server, actually i can do ping to my default gateway and access the Internet in IPv6, the specific point is however,... (3 Replies)
Hi,
I'm quite new to unix networking and ip tables. I'm running a debian (htpc) server with two NIC's; eth0 and wlan0.
I'm trying to set it up in a way that eth0 is the default interface for internet, but some processes should run through wlan0.
For example, I'm using eth0 for downloads... (2 Replies)
Hello, I'm trying to route all packets arriving at a particular interface by entering the same interface
the virtual interface eth1: 2 and now everything is routed by default gw configured on eth1.
eth1 Link encap:Ethernet HWaddr 0a:0e:64:18:52:72
inet addr:192.168.10.15
eth1:2 ... (1 Reply)
Hi folks,
I have a debian server running an Apache daemon on the eth0 interface. Now from time to time the server has to open an openvpn connection (tun0) to other networks to get some data from there. During this period the Apache is no longer reachable under it's IP address on eth0 because all... (6 Replies)
RHEL 7.0, IPV6
Scenario:
I have routed specific network using network scripts.
1. "ip -6 route show" shows that route has been added. ( with metric 1024)
2. Ping of the specific IP through that route is successful.
3. Now after few days, for some reason, we see that cache route appears for... (3 Replies)
Discussion started by: msr1981
3 Replies
LEARN ABOUT FREEBSD
if_gre
GRE(4) BSD Kernel Interfaces Manual GRE(4)NAME
gre -- encapsulating network device
SYNOPSIS
To compile the driver into the kernel, place the following line in the kernel configuration file:
device gre
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_gre_load="YES"
DESCRIPTION
The gre network interface pseudo device encapsulates datagrams into IP. These encapsulated datagrams are routed to a destination host, where
they are decapsulated and further routed to their final destination. The ``tunnel'' appears to the inner datagrams as one hop.
gre interfaces are dynamically created and destroyed with the ifconfig(8) create and destroy subcommands.
This driver corresponds to RFC 2784. Encapsulated datagrams are prepended an outer datagram and a GRE header. The GRE header specifies the
type of the encapsulated datagram and thus allows for tunneling other protocols than IP. GRE mode is also the default tunnel mode on Cisco
routers. gre also supports Cisco WCCP protocol, both version 1 and version 2.
The gre interfaces support a number of additional parameters to the ifconfig(8):
grekey Set the GRE key used for outgoing packets. A value of 0 disables the key option.
enable_csum Enables checksum calculation for outgoing packets.
enable_seq Enables use of sequence number field in the GRE header for outgoing packets.
EXAMPLES
192.168.1.* --- Router A -------tunnel-------- Router B --- 192.168.2.*
/
/
+------ the Internet ------+
Assuming router A has the (external) IP address A and the internal address 192.168.1.1, while router B has external address B and internal
address 192.168.2.1, the following commands will configure the tunnel:
On router A:
ifconfig greN create
ifconfig greN inet 192.168.1.1 192.168.2.1
ifconfig greN inet tunnel A B
route add -net 192.168.2 -netmask 255.255.255.0 192.168.2.1
On router B:
ifconfig greN create
ifconfig greN inet 192.168.2.1 192.168.1.1
ifconfig greN inet tunnel B A
route add -net 192.168.1 -netmask 255.255.255.0 192.168.1.1
NOTES
The MTU of gre interfaces is set to 1476 by default, to match the value used by Cisco routers. This may not be an optimal value, depending
on the link between the two tunnel endpoints. It can be adjusted via ifconfig(8).
For correct operation, the gre device needs a route to the decapsulating host that does not run over the tunnel, as this would be a loop.
The kernel must be set to forward datagrams by setting the net.inet.ip.forwarding sysctl(8) variable to non-zero.
SEE ALSO gif(4), inet(4), ip(4), me(4), netintro(4), protocols(5), ifconfig(8), sysctl(8)
A description of GRE encapsulation can be found in RFC 2784 and RFC 2890.
AUTHORS
Andrey V. Elsukov <ae@FreeBSD.org>
Heiko W.Rupp <hwr@pilhuhn.de>
BUGS
The current implementation uses the key only for outgoing packets. Incoming packets with a different key or without a key will be treated as
if they would belong to this interface.
The sequence number field also used only for outgoing packets.
BSD November 7, 2014 BSD