similar to: network redundancy via two nics, two routers?

Hi, I am not able to access the local CIFS share using samba on unix machine. It is returning with Access Denied. Please see the attachment for more details. Thanks, Dhyan -------------- next part -------------- 03:09:50.311663 IP dev-130.odc.reconnex.net.ssh > 10.213.132.83.64001: P 339078270:339078322(52) ack 1209710857 win 9648 03:09:50.311694 IP dev-130.odc.reconnex.net.ssh >

Hi all, First of all I repost this email in shorewall list as there are a lot of firewall experts here that might know what the hell i going on. We have also posted this on the linux bridge list (we needed acceptance first) and leaf list. Very thankful for your understanding. We are experiencing a very strange problem and would need some help. We have a Leaf / Shorewall based box (actually

First, I'd like to configure my system to forward ip, to act as a gateway for my network. I've always used a script during startup to do this: echo 1 > /proc/sys/net/ipv4/ip_forward iptables -t nat -A POSTROUTING -o ${UPLINK} -j SNAT --to ${IP_NAT} This works fine, however I want this permanent so I don't have to run the script on startup. I have the firewall setup with SNAT

Solution is really simple. Since this server is dual-homed ( 2 nic's ), i suggest setup advanced routing tables. The short version of howto setup. edit /etc/iproute2/rt_tables and Add : 10 OfficeLan 20 InternetWan Lookup the routing tables: ip route show table OfficeLan ip route show table InternetWan The default gateway's is to the internet. ( change ethX to you network interface

Hello! I have access server with 4 uplinks (nice, huh?). I ran RedHat 7.3. Yesterday I did an upgrade to RedHat 9. After upgrade Linux says the third link is bad: # ip route show 2.2.2.0/30 dev eth2 scope link src 2.2.2.2 4.4.4.0/30 dev eth4 scope link src 4.4.4.4 3.3.3.0/29 dev eth3 scope link src 3.3.3.3 1.1.1.0/28 dev eth1 scope link src 1.1.1.1 10.1.1.0/24 dev eth0 scope link

Hi all, I am trying to come up with an architecture that has some redundancy. The idea is to hook up the two GbE LAN interfaces of a CentOS server to two Gigabit Ethernet switches. In case one switch goes down, there is a redundant path (the server is redundant too). Here is the idea: ----------- | GbE | PCs

Hi, I have both linux and solaris NIS client against a Solaris NIS Server, but my linux box are shamefully slow compare to solaris some sample: on Solaris 5.8: # ypwhich transporter02.domain.com # time id userid uid=36923(userid) gid=36923(u_036923) real 0.0 user 0.0 sys 0.0 on Linux: [root at linux]# ypwhich transporter02.domain.com [root at amsdc2-n-s04taw root]# time

Silvertip257, when you did this CentOS 6/KVM/bonding/bridging, did you ever get all the parts playing together correctlhy? I'm facing a setup with only two NIC's, and need for multiple trunked VLAN access, and bonded pairs, and KVM based bridges to get the VM's with exposed IP addresses. I can get basically any 2 out of the 3 server network components working, binding, VLAN's, or

Hi , I am getting the delay in pinging (from different network) , the guest after live migration . Here is the scenario: 0. OS : RHEL5.4 86_64 1. Host-A. Port eth1 , it is trunked with three subnets xxx.xx.15.xxx xxx.xx.16.xxx xxx.xx.17.xxx Guest created on 15, 16 ,17 subnets. Gust15-A created on subnet 15 Gust16-A

I have question about multipath routing. I am running a 2.6.7 kernel (gentoo). I have a route with three nexthops on the same interface. I see a different nexthop being picked for different destination addresses. All is fine. Now if one of the nexthop goes down (arp entry times out and arp request doesnt get a response), does it remove the nexthop from contention and only use the remaining two

Hi. I''m wondering if there''s a good way to configure a Linux firewall box to failover to a single backup server, while preserving connection state. This question has been asked before, but the latest reference I can find is from 2004, at which time Linux had no equivalent of OpenBSD''s pfsync, though Harald was said to be working on one. Did anything come of those

We have a client that wants to bond 2 DSL circuits instead of getting a T-1 (or similar) at their office to run their VoIP traffic on. We came across this Multihomed Gateway (MH200): http://www.cyberpathinc.com/mh200/details.htm Does anybody think this would work if installed at the client location handling NAT for 10 Cisco 7960's and connecting to our public asterisk server? My concern

Hi, I am facing a problem when I run tc on the bonded nic cards. When I run tc on a single nic card, it worked perfectly fine. But when I run tc on a bond of two nics, tc gives poor performance. The two nics were bonded in round-robin (load balancing) mode. I created a qdisc, class and a filter as follows: tc qdisc add dev bond0 root handle 1: htb tc class add dev bond0 parent 1: classid

To avoid a single point of failure, we are configuring an Oracle cluster with two private NICs per node. They are directly attached via crossover cable to its peer on the other server (two-node cluster). How can we tell OCFS2 that it has available a second card? Here is our cluster.conf: node: ip_port = 7777 ip_address = 10.10.2.1 number = 0 name = neo

For easy reading: http://www.karthaus.nl/r/ Hi, We used to have 1 single ip range (1.1.1.0/24) that had one uplink to a = switch of the colocation provider. Recently we got a second range 2.2.2.0/24 and a redundant uplink = directly on two routers. But our switch does not have spanning tree = protocol support so we cannot use them redundantly. We have set up the switch to have a vlan for both

Hello all, This has been making me crazy for a while, but it seems like a really easy fix. I just can't figure out what it is. Any ideas would be greatly appreciated. I have two Linux machines existing on a mostly MS network and have samba running well on each. However, one machine resolves the wrong ip address of the other machine. Here's the setup. Machine 1: Laptop uses DHCP to

My setup: LAN A | |-- Wireless-r1 --| |-- Wireless-r2 --| ..................| .................LAN B LAN A is my primary (external) LAN. LAN B is my wireless LAN. LAN A does iBGP and OSPF routing. Each wireless router does the following: 2 Bridged Ethernet + STP connections to LAN A 2 Bridged Ethernet + STP connections to LAN B 2 VLANs on LAN A 5 VLANs on LAN B UCARP on each wireless

I've got a Fedora 13 box that I am using as a pxe server to pxe load client machines. Using dhcp, tftp, and http I have been able to succesfully pxe load clients. However I am now trying to serve up multiple images via a menu, and not having any luck in configuring my pxelinux.cfg/default file to direct clients to the appropriate source repositories. I do have the pxelinux.cfg/default file

Trying to think this through, hope someone can lend a hand. I have 3 eths I want to bond together and that seems simple enough. eth0,1,2 <-> bond0 , though not sure how this would be for multiple ip addresses needed for the virtual machines... perhaps eth:0, eth:1 etc....to bond0:1, bond0:2 ? then I want to bridge to my virtual machines.... I am going to be using virtual machines, each

Hi all, In threads posted by I believe Jonathan Tripley I promised to post my new XEN HA setup. Hope it can be of some use to some people. In this particular case I''m forced to use SLES 10SP3 with XEN 3.2, which excludes the possibility of using things like cLVM (which I don''t think I need anyway). So: Storage: I use two HP ML370 G5 machines with DRBD and heartbeat on