similar to: MTU issue when using GRE over tinc

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

? ? ? Hi, all:? ? ? ? ? I'm playing with Gre Tunnel programming in centos 6. ? ? ? ?? ? ? ? ? I wrote my program in these steps:? ? ? ? ? a, open /dev/net/tun ?device and ioctl with?TUNSETIFF, get fd to tun device, say "tun0"; ? ? ? ? b, create one socket and use it to set tun0's ?ip address, namyly?SIOCSIFADDR and?SIOCSIFDSTADDR; and then turn it up; ? ? ? ? c, create one raw

Hi, In a setup where OpenVSwitch is used with GRE tunels on top of an interface provided by tinc, I'm experiencing significant performance degradation problems (from 100Mb/s down to 1Mb/s in the worst case) and I'm not sure how to fix this. The manifestation of the problem is, from the user point of view, iperf reports ~100Mb/s and rsync reports ~1Mb/s: $ iperf -c 91.224.149.132

Hi, I have recently updated one of my systems from CentOs 6.4 to CentOS 6.5. This systems is used as a RIPv2 routing server with quagga which is the termination point of some GRE tunnels. While running CentOS 6.4 I see the multicast packages arriving at the eth0 and the GRE tunnel interface. While running under CentOs 6.5 I can see the multicast packages arriving at the eth0 but not on the GRE

Hi, Here are my submitted proposals, and they are still in progress. Wellcome your comments, if you have some interest in the topics. Update the SAFCode project to the new LLVM API http://blog.csdn.net/yiqiuping/archive/2010/04/06/5453367.aspx Check bounds overflow bugs in C programs based on LLVM http://blog.csdn.net/yiqiuping/archive/2010/04/06/5453368.aspx ABCD: Eliminating Array Bounds

Hey all, Anybody been successful running DHCPD on a GRE tunnel? When I tell DHCPD to listen on cisco1 I see this in the log Jul 23 16:21:03 atlantis dhcpd: cisco1: unknown hardware address type 778 Here is the output of ifconfig cisco1 Link encap:UNSPEC HWaddr 8B-8E-28-32-00-00-00-00-00-00-00-00-00-00-00-00 inet addr:10.199.0.2 P-t-P:10.199.0.2

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

Hey guys, i have a problem with building a multi-isp gateway using a GNU/Linux box with priority routing enalbed and after all. any ideas what should i do? maybe a step by step intro? thanks in advanced. Deslay

Hi! I read http://mailman.ds9a.nl/pipermail/lartc/2002q4/006244.html and I did that. Can anyone tell me if there is something else to do for shapeing over tunnels to work? I noticed that gre interfaces don''t have a queue attached. I''m running linux-2.6.15 and iptables-1.3.4 with no patches. Thank you in advance, Sorin.

Hi! I want to add to my previous post that: my setup looks like this internet --> linux router with NAT and tc ==> gre tunnel ==> forwarding router --> LAN At my NATting router I can "see" the forwarded LAN (192.168.2.0/24). Now let''s say that there is a LAN workstation with the IP 192.168.2.18 and I filter the traffic with tc for it. If the fowarding router has

Hi, how does gre tunnels handle the TOS/DS field in the encapsulated packet? Is the value copied to the encapsulating ip header? thx jason _______________________________________________ LARTC mailing list LARTC@mailman.ds9a.nl http://mailman.ds9a.nl/cgi-bin/mailman/listinfo/lartc

Hi, I have the following setup. Two linux systems with two [test] external interfaces encrypted with ipsec [transport]. Two gre tunnels that pass 10.200.0.0/24 and 10.200.1.0/24 network traffic. Testing the balanced tunnels I would setup iptraf on one and ping from the other. The results would be as expected; traffic would be split between the two interfaces. Testing with an ftp transfer of

Hi, I have two systems each with 2 two gre tunnels over ipsec. The tunnels are setup to loadbalance using ''ip route''. Using ping from one server to the other I get equal results via the two gre tunnels, but when I try a large ftp transfer the utilization of one tunnel is 90% and the other 10%. The two interfaces are both 100/full. What would be the reason for this, or would

Hi , I am trying to set up a GRE tunnel between two linux routers. The routers have a 400 MHz Processor. Linux .2 65.0.0.2 Linux LAN1 -------- Router -------- INTERNET ---- Router ---- LAN2 10.10.10.0 .1 208.1.0.1 (Simulated) .1 .1 192.168.2.0/24 /24 Scripts to Create the tunnel ip tunnel add tun0 mode gre remote 65.0.0.1 local

Hi! I have successfully set up traffic shaping at our site using your and others howtos. I have a linux firewall (gateway), two leased lines. I shape only the incoming traffix now. I use HTB+SFQ and sort the packets using iptables with the CLASSIFY patch. It works very well. eth1----ISP2-\ eth2----ISP1--LINUX--internal network eth0 My problem is, that i can not shape my VPN (PPTP)

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 All, As it is written in the "Linux 2.4 Advanced Routing HOWTO" GRE tunneling has some benefits compare to IP-in-IP, on of it benefits is the ability to transport multicast traffic through a GRE tunnel. I used the mrouted daemon and I know that the daemon supports tunneling but I don''t want to use its tunneling method. Assuming I have gre0 as my tunneling device I did the

Hello, I'm preparing to prepare to take the Graduate Record Exam (GRE) this fall, and I downloaded the GRE PowerPrep software from www.gre.org. Unfortunately, I have not successfully set up the software yet - when I try to get a set of practice questions, the program gives me a Windows dialog box saying "Fatal Error". Then the program stops responding to mouse clicks completely and

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

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!