Networking :: Layer 2 Switch For Token Ring And Ethernet
Mar 9, 2011Can both token ring and ethernet be connected to same switch? If we can connect so, how can a switch able to differentiate them.
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Fedora Networking :: Connect 14 PC To A Token Ring LAN ?
Feb 21, 2011Is there any way to connect a Fedora 14 PC to a Token Ring LAN? I know I need to use the olympic driver for my card and I know how to configure it in an older version ubuntu, but I'm coming up totally empty on Fedora.
View 11 Replies View RelatedNetworking :: IP Layer Link Aggregation Without Switch Support
Sep 2, 2010I'm looking for a way (kernel patches, configuration, etc) to bond multiple network interfaces together but for limited purposes. Here's the setup. Machines A, B, C, and D each have 4 NICs, each of which are on separate unmanaged switches. The connections are made in a corresponding way. e.g. eth0 of each machine are connected via switch 0, eth1 are connected via switch 1, etc. There are also other machines which have only one NIC and are connected to switch 0 only. All NICs for A/B/C/D and the switches are gigabit speed. The remaining machines have a low traffic level. Machines A/B/C/D need the extended bandwidth. And this bandwidth need usually involves only one connection at a time.
E.g. machine A transferring files to machine C with no other traffic going on. The speed need is to cut the transfer times from several hours to few hours (such as 8 hours to 2 hours). Transfers of up to a few terabytes at a time are involved. IEEE 802.1AX won't accomplish this. It requires special support from a single switch that all connection go to (raising costs and reducing reliability). Also, from technical details of 802.1AX, it appears that a decision process is made for which traffic goes over which physical link based on destination information. It's unclear what impact this will have, but it looks like at least a single TCP connection cannot use all physical links.
And possibly all traffic from host A to host B is limited to a physical link (not any better than a round robin of crossover cables). What I am looking for is something that works entirely on an end-to-end basis within a LAN. If it works at the link layer, that could be OK as long as it doesn't have the limitations of 802.1AX. Working at the IP layer would be OK, too (as I can already envision the logic of how to make that work). This might be an experimental patch to the Linux kernel if anyone has tried it. I have not dug into kernel source to see what might be in there, yet, but will eventually do that if there isn't a patch already available.
Networking :: Layer 2 Switch - VLAN Router To Network
May 15, 2009Our ISP provides us with Layer 2 hardware (Modem?/Switch? (Hatteras)) for our leased line and internet access. I have been told that I should set up a VLAN capable router to separate the internet traffic from the internal traffic. I found that linux is capable of VLAN routing. Nice!
I have setup opensuse 10.3 put in two NICs and did the following
vconfig add eth0 10
vconfig add eth0 20
ifconfig public.ip.add.ress netmask 255.255.255.252 eth0.10 up
ifconfig 192.168.0.1 netmask 255.255.255.0 eth0.20 up
Plugged this NIC into the HATTERAS hardware (with a straight cable), and thought that this way I should be able to ping the public gateway or any ip out on the internet. My ISP is telling me that I should create a VLAN trunk to be able to 'use the internet', but as I understand in linux if I create any number of VLANs on one NIC they are already trunked. I also got the info, that the traffic is tagged, and I can separate the traffic reading the tags. I already read that some NICs are not able to VLAN because they are not able to handle the increased packet size.
Also that the MTU setting is important (dono' the exact value though, only that its important). I thought that a linux machine can act as a router and firewall in such a case, because proprietary switches/routers use linux as embedded os. This is my first meeting with VLAN so if this whole post does not make any sense or you think that I just need to RTFM more then tell me! I also have some (3) Dlink 3226 Layer2 switches around, but I think it would be waste to use a 24 port switch on this subject.
Networking :: Ethernet Bonding - Link Layer Detection Failover Not Enough
Jul 7, 2011We run redundant switches that two nic's on each server connect to. We also run bonding on our servers. Because we have two switches, we can't run lacp or anything. If a switch goes into a crashed state where it doesn't pass traffic but still provides link, bonding thinks the interface is still up and thus will still send traffic through it. Does anybody know a better way to configure the fail over of the interface? This would be a similar situation to somebody using a media converter.
View 1 Replies View RelatedUbuntu Networking :: Two Ethernet Ports And Share Internet Via A Switch
Apr 30, 2011Just recently got a new rig, and was wondering, is there a way to share internet via a switch. I understand the problems with switches is that they dont assign IPs like routers do, but if my ubuntu machine worked like a router by assigning IPs, could it work? Current setup is as such. I have one ubuntu machine with 1 ethernet port (this shall be the main preferably) 1 mac with a single ethernet port 1 modem with a single ethernet port that cannot assign more than one IP address. And a 5 port switch. Would it be possible to place the modem into the switch, get the ubuntu machine to receive the IP address, and broadcast all other address' to everyone else via the same switch and ethernet cable?
View 3 Replies View RelatedUbuntu Networking :: Switch Ethernet Back To Dsl Or Have A Computer Convert It?
Jun 10, 2011I wanted to split adsl line, but a friend of mine explained that this isn't possible.. So now my question is that can you somehow switch ethernet back to dsl or have a computer convert it so that nothing has to be done to the other modem.
View 5 Replies View RelatedNetworking :: Ethernet Bonding Require The Switch To Support Link Aggregation?
Feb 19, 2010if could setup ethernet bonding in linux, does it require the switch to support link aggregation?
View 2 Replies View RelatedKernel :: Send Pages Of 4096 Bytes From Layer Of Server To Layer Of Client Over A Network?
Jan 13, 2010im trying to send pages of 4096 bytes from kernel layer of server to kernel layer of client over a network. previously i tried the foll. code , for data less than a 100 bytes it worked fine , but for something larger than that the computer hangs......(even the dmesg's wont say why) i also wanted to know how we could use the 'sendpage' function to solve this problem.
Code:
CLIENT'S KERNEL MODULE
struct iovec iov;
char buf[1024];
[code].....
OpenSUSE Multimedia :: K3B - Dual Layer DVD Detected As Single Layer?
Aug 8, 2010K3B says that my drive supports DVD-R DL writing. K3B shows it only having 1 layer.dvd+rw-mediainfo shows
Code:
INQUIRY: [ATAPI ][DVD A DH16A6S ][YA16]
GET [CURRENT] CONFIGURATION:
[code]...
Ubuntu Networking :: Wireless - Ring Keep Rotating And It Never Connects
Jul 3, 2011I recently installed UBuntu 11.04 and dual booting it with WIndows 7, I really like linux and considering removing W7 and only have Ubuntu But the problem is I can only connect when using an ethernet cable, when it comes to wirelesss, I type my password, yet a ring keep rotating and it never connects. My laptop is HP-G62
View 3 Replies View RelatedGeneral :: VMWare SuSe - Cannot Ping Switch (Ethernet Card)
Aug 23, 2010I have linux suse installed on VMware, my pc is running Windows XP. I have a switch connected to my ethernet card (also through console cable). When I am on windows I can ping the switch, but from linux I can't. My ethcard is "Bridged" on VMware, I can ping 127.0.0.1.
View 14 Replies View RelatedOpenSUSE Hardware :: Connected To A Fast Ethernet Switch Or Directly Into The ADSL Router?
Jan 5, 2010Using SuSE 11.2 can anybody suggest a decent compatible Ethernet / Network Colour Printer. Just a printer not a multifunction device. The printer will be connected to a Fast Ethernet Switch or directly into the ADSL Router.
View 4 Replies View RelatedNetworking :: How To Estimate IP Layer Bitrate
Feb 2, 2011I am trying to find out how I can estimate the IP Layer bitrate I would get from an ethernet link? Say at 100 Mbits/s or 200 Mbits/s (powerline)? Is there a formula that I could use to calculate that?
View 2 Replies View RelatedUbuntu Networking :: User Interface Changed And It Defaulted To Ethernet And Now It Won't Letting To Go Back On Wireless - Disable Ethernet?
Sep 1, 2011My laptop was working fine on wireless till the userinterface changed and it defaulted to ethernet and now it won't let me go back on wireless How do i disable ethernet?
View 4 Replies View RelatedNetworking :: Write A New Protocol On Transport Layer
Jul 23, 2010I want to write a new protocol on transport layer. These are the features that new protocol should include:
-Real time
-Concurrent transfer
-Multipath and Multihoming
the reason why i should write this protocol is in order to transport encoded video stream over 3G link. When i investigated TCP UDP or SCTP source codes, i couldnot understand them at all. What ı want is to help me about steps of the protocol writing or guideline about it. How should i start, is there any book or source about it (i couldnot find over my internet research).
CentOS 5 Networking :: How To Install The Link Layer Topology
Jan 11, 2010I was wondering how to install the Link Layer Topology on CentOS 5. I have installed the lld2d daemon from a Debian how to after compiling it. It seems to be running but it is not talking to the Windows 7 network mapping.
View 2 Replies View RelatedFedora Networking :: Netem Rate Limiting (token Bucket Filter) Not Supported?
Apr 3, 2010I've been trying for a couple days now to get netem rate limiting to work on a Fedora 12 i686 virtual machine (both on VMware Fusion and KVM), and have had no success.In order to do outbound rate limiting, I want to use the netem token bucket filter (TBF), as described here:[URL]Unfortunately, attempting to use the TBF results in this error:
Code:
[root@f12-build ~]# tc qdisc add dev eth1 parent 1:1 handle 10: tbf rate 256kbit buffer 1600 limit 3000
[code]...
Ubuntu :: Command To Install Medibuntu Key-ring?
Oct 2, 2010I upgraded to 10.10. Now I want to install medibuntu. I have the repos added, but when I try to add the key-ring with the terminal it won't add. Can someone give me the command for that again?
View 7 Replies View RelatedUbuntu :: Logon Will Not Recognize Password Nor Will Key Ring
Feb 5, 2011logon will not recognize my password nor will key ring .
View 3 Replies View RelatedProgramming :: Capture Packet From DMA Ring Buffer?
Jul 21, 2010I wanna capture network packets from DMA ring buffer, just like netfilter. i wanna capture it from DMA, because i wanna get MAC address of I/O packets, so netfilter not included MAC address of out going packets because its on IP level and Ebtables is like that too. how i can capture network packets from DMA ring buffer.
View 9 Replies View RelatedUbuntu :: Prompted For Key-ring Password On Login?
Jun 4, 2010I'm using Ubuntu 10.04 Lucid -- I upgraded from Ubuntu 9.10 which also had kubuntu desktop installed.After entering my username and password in the user login screen, I'm prompted for my key-ring password even though my key-ring password and my user login password are the same. How can I have key-ring password prompt automatically use the password entered at user login?
View 2 Replies View RelatedServer :: Getting Modem To Answer On The Correct Ring
Aug 2, 2010I am having issues getting the modem it the dial-in server I have set up to answer on the correct ring. I have the /etc/inittab set:
Code: S1:2345:respawn:/sbin/mgetty -n 7 -x 6 -D ttyS2 yet I have to play with 'init q' and minicom to get it to answer on ring 7. Then a reboot destroys the setting and I have to go through the whole hassle again and it goes back to answering on the first ring.
This is not acceptable. This dial-in server is only a very back door into my network. It is only turned on when needed. Most of the time it is not powered up. When it is turned on it is by a non-tech person with out the ability to jump through the hoops to get it to answer on the correct ring.
Ideally I want this modem to just listen to the line after it stops ringing to check for a data signal and if it does not find it just hang up. If it finds a data signal then establish a connection and all that. That way it does not interfere with answering machine on the line. Google has yielded very little info about setting up dial-in servers. Modems are not used very much any more.
Debian :: Any Way To Reset Key Ring Passwords And Start From Scratch
Jun 26, 2015Evolution keeps asking me asking for the passwords for the mail servers I use for the key ring. And sometimes crashes if I try to cancel. I mean it asked yesterday and then again today.Is there anyway to reset the key ring passwords and start from scratch.Apparently to many things use key ring so it can't be removed.
View 4 Replies View RelatedUbuntu :: Can't Get Past Default Key Ring Password Screen
Sep 22, 2010I installed a couple of updates that the update manager said were important the other night and now I can't get past the default key ring password screen. Only the mouse works (USB); the keyboard has no response.I know the password but I just can't get the keyboard to work.
View 1 Replies View RelatedUbuntu :: Isdnlog Doesn't Start Script On Ring?
Dec 3, 2010I have a Fritz!Card PCI which I used to display and log calls to my phone on Windows XP with. Now that I use Ubuntu Maverick x64, I tried to do the same with isdnlog. Logging the calls to /var/lib/isdn/calls works fine, but the START command doesn't work.
I have experimented with different parameters (user, group, interval, time, flags) in the start section, nothing worked.
I have read this tutorial to get started. The installed version of isdnlog is 1:3.12.20071127-0ubuntu6.
Here you see the files:
/etc/isdn/isdnlog.isdnctrl0
Code:
# This is a very short summary with the important options.
# for a longer descriptions of all options : please read isdnlog(8)
[options]
#log=1 # log d-channel messages. value may be 0-15 (bit coded flags)
[Code].....
Ubuntu :: Unwanted Key Ring Protection On Network Pass?
Dec 14, 2010Because of a hard disk failure I had to buy a new disk and reinstall Ubuntu 10.04. Prior to the install I was running the live cd version of 10.04. When I connected to my wireless network and entered the password the key manager wanted me to enter a password to protect the network password. Now every time I boot up the system the network will not automatically connect. (It used to do this). Now I have to click on the network manager and select my network. When I do this I get the key manager asking for a password.
So how do I stop the key manager nonsense and get the network to connect automatically as it once did.
Software :: No Ring Sound In Skype In Mint Debian / Get That?
Oct 27, 2010I am using the Dynamic Static version of Skype in Mint Debian OS, which uses pulseaudio.
Voice communication works OK but there is no ring sound in or out and test sound is grayed out.
Ubuntu Networking :: Crosswire Or Ethernet - Make A Server Box My Entrypoint To My Networking
Mar 1, 2010Im trying to make an ubuntu server box my entrypoint to my networking. Meaning itll function as a server, a firewall, and a gateway. so i already installed dhcp3 and a dns server.
I have 2 ethernet cards in it. So now i wonder, should i the second card into a router's modem/wan port and make the router a switch? or should i plug it into one of the routers lan ports?
Ubuntu Networking :: Dual Ethernet Networking - Lose Internet Connectivity?
Apr 18, 2011I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.