similar to: transport multicast traffic through a gre tunnel.

I am trying to setup GRE between two CentOS 4.5 boxes. I have tried several variations of what''s listed below, but none of them work. box1: modprobe ip_gre ip link set gre0 up ip tunnel add gretun mode gre local 66.1.1.161 remote 66.1.2.161 ttl 20 dev eth0 ip addr add dev gretun 10.253.253.1 peer 10.253.253.2/24 ip link set dev gretun up ip route add 10.2.0.0/16 via 10.253.253.2 box2:

Hello, Here is my network: ------------------ ------------- ----------- Linux box ----------- GRE --------- Cisco ---------- ------------------ ------------- What I wan to accomplish. I want ripv2 to go across (both ways) through the GRE tunnel. No packets are being passed thought the GRE

I need to send multicast traffic through a GRE tunnel between two Linux routers. The tunnel works for normal IP packets, but I can''t see how to make it work for multicast. Here''s the setup: 10.10.10.0/24 LAN-B--------------RtrB-------------RtrC--------------LAN-C 192.168.2.0/24 192.168.1.0/24 RtrB interfaces: eth0

Hello Lartc Mailing List: Been working on something the last week and a half and ALMOST have it working.., just need a few pointers from the wizards on this mailing list to nail it. Ok, my setup is a hub and spoke arrangement, hub is Cisco 2821 with IOS 12.4. Spokes are ruggencom RX1000 routers, Debian based with the following versions installed: rx1000test:~# uname -a Linux rx1000test

Hello, I connected the network 192.168.1.0 with 192.168.2.0 over the internet trough a GRE-Tunnel. I don''t know if I set up all things right: The client-pcs in both networks have a subnet mask of 255.255.255.0 and 192.168.2.x''s default gateway is the server wich has started the tunnel. The 192.168.1.x''s default gateway is 192.168.1.250 wich routes traffic destinated to

Hi, Does anyone tried to get ipip or gre tunnel behind NAT environments. ? i''m trying to make both side tunneling with ipip or gre with private address just like belows.. A -------------------FIRWWAL -------------------INET ------------------- B PRIVATE PUBLIC PUBLIC (10.100.0.1) (211.xxx.xxx.xxx) (

Hi, I have a problem with GRE tunneling. I read Advanced-Routing HOWTO about this and I did all as is written in this documentation. Even the same example is here which I need for my project. I want create (by means of GRE tunneling or IP in IP tunneling) virtual private network VPN - in first phase without IPsec in other phase with IPsec. I have two local networks distant apart with two routers.

[Disclaimer : I'm not a network engineer] Hi, In a setup where OpenVSwitch is used with GRE tunels on top of an interface provided by tinc, I'm experiencing MTU problems and I'm not sure how to fix them. The manifestation of the problem is, from the user point of view, communication hang. And using "tcpdump -i there" displays lines such as : 18:54:00.345666 IP

Hi Devik/Patrik, In setting up IMQ/HTB with a GRE Tunnel I''m constantly getting kernel errors: [root@linux /root]# dmesg ... ... ... NET: XXX messages suppressed. Dead loop on virtual device gre1, fix it urgently! ... ... ... This I get only if I''m going to start cross device b/w control. If I remove iptables rule iptables -t mangle -D POSTROUTING -j IMQ then no such warning

Hi Guys, Here is our patch to allow broadcast packets over a GRE tunnel. Hopefully it might be accepted into the source someday. You need to enabled bridging and GRE tunnels in your kernel. No other options are required. The gre patch determines what type of protocol type to put in the GRE header based on the whether the packet is forwarded from a bridge or not. To use the patch: # Create

I want to send a multicast packet to multiple gre tunnel, but the packet only went to where the routing table configured to. ex. when use ip route add 224.0.0.0/4 via gre0 then the packet go to gre0 when use ip route add 224.0.0.0/4 via gre1 then the packet go to gre1 when use ip route add 224.0.0.0/4 nexthop via gre1 nexthop via gre0 then the packet go to either gre or gre1

I am attempting to setup an IPSec protected GRE tunnel with a Cisco router. I believe the IPSec association is up, however I cannot move traffic over the tunnel. It is not clear how to integrate the tunnel interface (gre1) with firewall-cmd; adding the interface to trusted does not appear to 'stick'. [root at aqueduct ~]# firewall-cmd --add-interface=gre1 --zone=trusted The interface

Hello, I''ve set up a GRE tunnel between two Linux boxes and it''s working well, with or without IPSEC (under GRE). The problem is that when I have no traffic for some minutes, side A cannot communicate to side B any more, unless side B tries to communidate to side A. The same thing happens in the other direction. For example, side A pings side B. No reply. Keep pinging. Side B

Hi! Can I create the unnumbered GRE tunnel with iproute2 utility? Can someone provide me a link/howto/example_config how to do it? The topology is one tunnel between two linux boxes: -- eth1-|__|-eth0 <-------------> eth0-|__|-eth1 -- I''m trying now with: ip tu add tun1 mode gre local loc.IP remote rem.IP ttl 255 dev eth0 ip addr add tun1 0.0.0.0 ip link set tun1 up but it

Hi, I am using linux kernle-2.6.15, iptables-1.4 and bridge-utils-1.4. Everything intslled without any issue and i am able to enable the bridge and traffic is also flowing without any issue. But i did not see any traffic on the iptables forward chain due to which i am not able to control the traffic. Do i requie enable anything more to make the traffic pass through iptables forward chain.

shorewall version 2.0.7 1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo 2: eth0: <BROADCAST,MULTICAST,NOTRAILERS,UP> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:30:48:53:25:b2 brd ff:ff:ff:ff:ff:ff inet 81.169.188.152/32 brd 81.169.188.152 scope global eth0 3: eth1:

/-----------------------\ | | |eth0 |eth0 |-------| |-------| | |eth1 eth1 | | -------- A |____ _______| B |----- | | \ / | | --------| | | --------| | | | |

Hello, I am doing some tests in my local network to test a GRE tunnel configuration. I can established a tunnel but if I stop send packets trough the tunnel , the tunnel goes down. I need to make ping from one side of the tunnel to the another side to wake up the tunnel. What could be my problem ?? Could be the VirtualBox ?? Thank you!

Hi everybody, I want to do the following setup : | | Tun1 - Link 1 | Tun1 | | Router A | teql | INTERNET Link - | | teql |router B | | Tun2 - Link 2 | Tun2 | | This should permit to agregate Link 1 and Link 2 (less the cost of the encapsulation). The two tunnels are GRE ip tunnel. It seems to work fine

Hi, I got a problem similar to this one (http://mailman.ds9a.nl/pipermail/lartc/2005q4/017614.html), GRE tunnel can forward normal IP packets such as ICMP but failed to tunnel multicast traffics. Here''s the setup: 192.168.20.0/24 LAN-A--------------RtrA-------------RtrB--------------LAN-B 192.168.50.0/24 192.168.60.0/24 RtrA