First, I installed CentOS 5.5 and Quagga 0.99.17.
Then I configure to run OSPF v2 on R1 and R2 following below:
I added --> #echo "1" > /proc/sys/net/ipv4/ip_forward to forward packet on centos
I have 2 routers in my network, R1 and R2. R1 is doing BGP with ISP1 and R2 is doing BGP with ISP2. both R1 and R2 are advertising the exact same a.b.c.d/20 network to their neighbor on BGP.
This setup is working perfectly fine, people can enter reach machines and services inside our network regardless of what route they come in through.
The problem i have now is that R1 is now catering for a specific VLAN. now if a packet is destined for a machine on that VLAN but comes in through R2, then R2 does not know what to do with that packet since it is not connected to the VLAN.
This could probably be fixed by adding static routes, but I want this to happen dynamically so in the future, when introducing more vlans the routing table is updated automatically.
Could this be fixed with iBGP or OSPF somehow? I am using Quagga routing software
I have a firewall, this consists of three NIC's:
Code: eth0[192.168.0.2] eth1[192.168.1.2] and eth2[10.10.165.2]
I am trying to ping eth0 from eth2, but I am not able to succesfully get a response from pinging the device, I am using:
Code: ping 192.168.0.2 -I eth2
I have tried to insert routing data into the routing table, but it still doesn't work
After a long time that I didn't touch my PC I just forgot how to configure the routing table I trying to ping the router and get "destination host untraceable" I manually assign the ip of the machine to 192.168.1.2 .And the gateway ip to 192.168.1.1 the only problem now
Is to get to the router interface on 192.168.1.1 to configure my internet and to browse
After making an changes (add/modify/delete) to /etc/static.routes, what command should we use to reload the routing table?
View 5 Replies View Relatedrouting tables using "ip route 2" I have a server(server1 from now on) with eth0(internet connection) and eth1(lan connection). eth1 have 2 more alias devices = eth1:1 and eth1:2 On my server 1 the eth0=public ip, on eth1=192.168.10.1/24, eth1:1=192.168.20.1/24 and eth1:2=192.168.30.1/24 server1 is running squid and iptables to all 3 networks (eth1, eth1:1 and eth1:2) All of the clients have access to internet. Now what i want to do is add 3 more networks via a router(linuxBox = server2 from now on) connected to server1 in eth1. so the network will be like this:
Code:
server1
eth0=internet
eth1=192.168.10.1/24 (connected to server2 and other clients)
[code]...
A packet is sent from the computer to the router it's connected with only the destination address in it, right? So - what does "kernel routing table" mean?
View 10 Replies View RelatedMy routing table does not get complete for some reason. I'm using a Huawei E220 USB modem on openSUSE 11.3 using NetworkManager to connect.When I connect to the net the routing table looks like
Code:
/home/freefox # route
Kernel IP routing table
[code]....
I have an Ubuntu 9.10 server installation which have been working flawlessly for some months. The server runs bridged networking, because of some VMs that runs on it. But, a couple of weeks ago the network connectivity have started to disappear now and then (usually once a day or so). Running "sudo /etc/init.d/networking restart" always kicks it back to life.
After a bit of debugging I noticed that when OK the routing table looked like this:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 br0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
default 192.168.1.1 0.0.0.0 UG 100 0 0 br0
While when in the non-working state it looked like this:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 0 0 0 br0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0
default 192.168.1.1 0.0.0.0 UG 100 0 0 eth0
default 192.168.1.1 0.0.0.0 UG 100 0 0 br0
Deleting the two routes to eth0 restores the networking again. Why these "erronous" routes gets added, and what adds them? How to further debug this?
I have to connect my private adres 10.0.0.2/26 to an external adres 192.168.1.253/16
I am not allowed to use Nat so i have to create a static routing table..
Ive put a router between with 2 nic's:
Ive seen on various sites that :
Should do the trick but it isnt working for me ... Ipforwarding is enabled.. Also when i use the sys/proc command..
How to make the table? I am using Opensuse 11.2
eth1 which is connected to interneteth2 internal networkbecause the server is part of a complicate network i need to setup the routing tables for eth1 and eth2but i need that the default 0.0.0.0 must be read from eth1 while i dont know why the server first read the one on eth2. this creates big problem to me.if i add the default route to eth1 i get an error saying that the default route already exist (i suppose is the one on eth2)how i can solve this ? i must create a script that first delete the default from eth2 and after add it to eth1
View 1 Replies View RelatedWhen I try wget URL... I get failed: connection timed out.I have created br0 as a bridge over eth0 to run this VM. The host has this IP 172.30.8.135.The host has access to internet through eth0 and this is the output of route inside the host.
View 1 Replies View RelatedIs there any way to restore back the default ip routing table? For example, my current routing table is something like
Code:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
109.123.95.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 109.123.95.1 0.0.0.0 UG 0 0 0 eth0
Then i connect to a vpn service and the routing table get's changed..now when i close it, it doesn't reset back to my default routing table.
What exactly does gateway in a route refer to? I know what a default gateway is- it's the route of last resort. But used in context of a host route (with destination specified), what is a gateway and why is it important?
View 5 Replies View Relatedi need to configure postfix on centos to relay email from the internet to the Exchange Server and i also need that emails sent from the exchange within the same domain be sent to postfix then resent to exchange because i have spamassassin and clamav installed on centos to filter all incoming and outgoing mails ...
View 1 Replies View RelatedI recently had the need to relay SMTP mail through our organizations hosted MS Exchange server. I had to do a little troubleshooting, so I wrote a concise summary of the procedure I followed.
View 1 Replies View RelatedI am deciding to whether use OSPF or RIPv2 on my network. The key point for me is how good each of them are in dynamically adding and removing nodes. I am pretty sure that OSPF works well if a node is suddenly dropped or a new one is introduced( Please correct me if I am wrong). how good RIPv2 is at this.
View 1 Replies View RelatedI routing OSPF from fedora9. but,
Why to Fedora 9 isn't quagga included?
Will substitute quagga there is a service from in the service which is included basically in Fedora9?
From in the service which exists only basically inside fedora 9 DVD
i had redhat version 5 server , i want use it as BTSN exchange can i used for this, and how
View 1 Replies View RelatedHave read a whole bunch of threads from how and troubleshooting but still having problems.Was thrown a box configured by someone who resigned today. Need to get mail from the box outbound via SMTP relay off our exchange server.
View 4 Replies View RelatedI have set up ubuntu server V9 with squid, dansguardian and clam. I have fetchmail wroking to bring in mail from our externally hosted website and delivering it to users mailboxes in exchange server. That was easy following guides on the internet. However my brain is failing me now. How do I reverse the process and send mail to the outside world. I need to be able to do this without authentication. At the moment i am using a windows environment with exchangepop3 which uses smarthost to connect to the ISP smtp server. Please help or point to a simple guide. If i cannot solve this soon i will have to revert to microsoft solution for the proxy server.
View 7 Replies View RelatedI downloaded Evolution last night but I am unable to connect to MS Exchange 2003. Does anyone know of a sure fire way to get connected?
View 1 Replies View Relatedi want to configure my MS Exchange server email in Evolution of Fedora. as, Ubuntu 10.10 gives the dropdown for MS exchange server, however in fedora 14 the same is not available.
View 2 Replies View RelatedI am using Fedora 12 and Thunderbird 3.0.4 version I am trying the connect it to the IMAP server but it does not work (no authentication).
- IMAP with SSL
- SMTP with none
Though it works for other email client (Evolution). I there a problem with the thunderbird itself or am I missing something special to configure that I dont know of?
I have a Nagios box set up on the corporate LAN. I'm trying to get it to send emails to both internal Exchange addresses as well as doing a direct delivery to internet domains.
I have looked at a few logs and it appears that Postfix is not doing proper DNS lookups on the internal servers. It keeps trying to connect to the domain controllers. I have an MX record specified.
I have set up qmailtoaster as a gateway for exchange.
my smtproutes contain this:
thedomain.com:mail.exchange.com
and my rcpthosts contain:
thedomain
The problem I am facing now is, the exchange was able to send mails through me alright. But when mails come in, qmailtoaster is suppose to forward the mails to the exchange server but it is not, rather the mails are sitting in the toaster's queue.
I am looking for an equivalent software of Microsoft Exchange server. Right now we are using MS Exchange Server with 40 users. Can I transfer this setup to any equivalent RHEL programs? Is There A Linux Equivalent To Microsoft Exchange?
View 4 Replies View RelatedI have a linux box on my DMZ with postfix on it. I have exchange on our internal LAN on 10.152.0.104.
View 6 Replies View Relateddo I have an alternative for Microsoft exchange server under linux ?
View 3 Replies View RelatedI'm experiencing an occasional frustration using Evolution with my work email which is on an MS Exchange 2003 server.Everything usually works well enough, but from time to time I'll try to retrieve a message,Is there a setting I've missed in Evolution that might take care of this, or some other workaround?Let me re-emphasize that the server is a 2003 Exchange server (and a source of endless frustration for a non-windows user). It's not a 2007 or 2010 Exchange server, which is what most companies use these days.
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