Get Hostname / IP Of Each Computer Linked On Port Of Switch?
Jun 21, 2012
I'm trying to use MRTG and SNMP on a Windows Serveur 2008R2.I want to manage my Switch with mrtg, but it don't show me which computers or server are connected to the Switch's ports.All I have, in the .cfg file is the interface name ( like S0/0 ), which are useless for me, I would like to get IP adresses or hostname but mrtg doesn't seems to do it.Any of you know if Mrtg can do that ? or maybe there are some others ways to do that ?
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Feb 17, 2012
My desktop computer hangs when i use internet linked software like Mozilla and internet explorer. When i got hang i can't do anything but to press the restart on my CPU. But i can access only in Yahoo messenger and skype. It's really weird, I've been using it for a long time but i just only encountered it now. I tried to use my computer in safe mode with networking and it all worked! but why isn't it working in my normal mode. it's so hard
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Apr 16, 2013
I have installed a switch (3560) that was from another site and changed all it's config and hostname etc and it is now live, however the syslog messages still see the old hostname, what could be causing this?
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Nov 21, 2012
I want to use Qos in EA2700. I want to know whether the port in the Qos means the port of local computer or the port of server. Or is it a source port or a destination port?
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Jan 5, 2011
I recently linked my dtv receiver to the internet through my laptop. My question is, since I'm now sharing the connection, do I need to make any adjustments in the "network and sharing center" to keep sensitive info on my laptop safe?I do have Norton Internet Security.
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Aug 18, 2011
I have a Netgear Router connected by DSL to the Internet (through Roadrunner). I have a AT & T Microcell Tower and 2 computers connected to the Router: a desktop running Windows XP Home Edition wired to the Router and a laptop running Windows 7 connected to the router wirelessly. Both computers connect to the Internet without any problem. However, they do not communicate with each other. The laptop indicates a home network with all 3 devices, but cannot communicate with the desktop. The desktop does not show any network at all. It only indicates a connection through the Router.
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Sep 28, 2012
Question: how would STP or RSTP behave in a star topology with a hub in the middle?i.e. you have four switches all linked to the same central hub. Single links, no loops.Each switch would then get BPDUs from everybody.Going by theory, it should be OK since it still sees the root's BPDU and will see the link to the hub as the root port, despite presence of other BPDUs from other switches? No different from receiving an inferior BPDU from an upstream switch and a superior BPDU from a further upstream root switch.I guess I could lab it by turning off spanning tree on a switch to simulate a hub? I've never previously had to deal with STP issues where there are hubs that aren't strictly point to point bridging so to speak (ok they're not bridging but you get the drift).I've got a scenario I'm examining at the moment where this is the topology, except all switches have bpdufilter running hence effectively no spanning tree. I'm curious to know what would happen should I remove the bpdufilter.I realise there is zero benefit in spanning tree in this instance as I don't have any redundant loops to fall back on, but I'm reluctant to turn off STP on those vlans (since obviously theres stuff behind those switches). The BPDUfilter method seems like an elegant solution but I wonder if its actually necessary.(the hub is actually a VPLS mesh, most sites terminate PE to CE router but I'm playing around with switches as the termination points – run our own Q in Q, split vlans off before it gets to layer 3 as separation, etc.)
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Aug 19, 2011
I'm just wondering why my computer is being associated twice before being secured and linked when it obtains an IP address from the DIR 655 router. I am using the DWA-552 wireless card to connect to it. When I first started using them together, this wasn't happening. Then, all of a sudden, one day it just started showing "above message repeated 1 times" just below the log entry for the client being associated".
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Jan 5, 2011
My DIR-655:
Hardware Version: A4
Product Page: DIR-655
The problem is that Website Filer doesn't work if on STEP 3: SELECT MACHINE of Access Control the machine was selected by MAC address. When the machine was selected by IP everything is fine.The problem is that IP addresses are assigned dynamically, so how to make sure that the policy would be applied to the same machine?
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Aug 29, 2011
I know there are a lot of threads out there regarding connection issues, both with wireless & LAN connections, after updating firmware to 1.35. To provide a snapshot of my setup...I have 3 GB switches throughout my home, a couple Ethernet enabled Blu-Ray players, 2 XBOX 360's, multiple satellite receivers with Ethernet, 5 PC's, 3 iphones, etc...you get the picture. I also have 5 older DLink wi-fi cameras. So, with this said my setup has been flawless for some time. However, a week or so ago I upgraded my firmware on my DIR-655 to the latest version...everything still seemed fine at the time. Yesterday I noticed we had no wireless internet so I went and checked. Sure enough...no connectivity on my desktop that's directly linked to the router, etc.
I tried rebooting & then resetting the router...got connectivity, but as soon as I plugged my PC into the switch...no IP address. I played around with settings, wiring configurations, etc...I'm pretty up to speed on this setup so I felt I exhausted every option. I thought my router went bad...gave me an excuse to go get the latest so I brought home a NetGear N750...hooked it up. As soon as I changed the LAN IP address range to condense the #of IP addresses I'm giving out again, the LAN connection to the PC was lost...I could not get it restored. I finally got it working, bypassing the GB switch, but the wireless would lose connection literally after a few seconds.
I ended up taking the NetGear router back and bought the exact same DIR-655, but this time it was HW version B1 instead of A and it was firmware #2.00 or something like that. I hooked it up when I got home...configured the system to exactly the way I had it before and PRESTO!!! My system is working like it was before. I can only think that the firmware upgrade I made on the previous router screwed something up in my system.
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Aug 6, 2011
In my home I have a cable modem wired to a links wireless router a wrt 300n in my office (only hardwired used in there) and I do not get such good distance to my back bedrooms with my laptop. I have run a Ethernet cable dead center of the house for my sat receiver that is connected and wired to the 300wrt. Here is my question can I use the 150 like a hub or switch at the office connected to the cable modem and use the wrt300n router so that I get wireless on that side of the house. Or in reading here I see I can maybe use a bridge. I do have a older Linksys wrt150n sitting in a box.I have read until my eyes are almost bleeding and am not sure. How I can get a better signal on the other side of the house.
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Jan 16, 2011
is it possible to assign a loopback address to a typical switch port on a 2950 switch? I want to be able to have some devices connected to a switch to test access lists and VLANs.
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May 8, 2012
On the supervisor card of a cisco 6500 series, according to the following link, [URL] it only has 2 uplink ports on the card. Would I be correct in assuming that I only have those to ports that I can configure IP addresses on?
The cisco that is being devlivere is coming with a 48 port switch and 24 port fibre switch. Could I change any of those ports into a router port and configure IP addresses on those?
The supervisor card is a ws-sup-720-3b the 48 port switch is a ws-x6748-ge-tx the 24 port fibre switch is ws-x6724-sfp
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Jun 5, 2013
I'm fairly new to Cisco products am in the process of developing my network knowledge on a deeper level. I have a 3825 with a HWIC-4ESW and I'm struggling to fully understand how the two "see" each other. I've setup a V LAN with a layer 3 address on the HWIC and added the switch ports to it. This seemed to allow devices connected to the switch ports to talk to the built-in router ports. I thought this was all making sense until i applied an access-list to the router port. It's a simple ACL i'm just using for testing and the only thing it does is blocks telnet from anywhere. I know the ACL is setup properly because if I connect a device directly to the router port i cannot telnet to the port. However, if i connect a device to one of the switch ports, i am able to telnet to the router port successfully.
It seems that I'm missing something with how traffic flows from the switch port to the router ports and how the two "see" each other.
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Dec 28, 2008
what is the use of no switch port command in L3 switch?
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Feb 26, 2012
I was looking for a way to connect an AUX port from a 1700 router to a 6500 switch module console port, to see the output of the Switch's on the 1700 router, in case there is a network downtime, I could see what's going on in the switch, what cable should I use ? Also, is there is any kind of documentation for this type of config what have I seen is very few info.
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Dec 7, 2011
I am trying to get a C2960-8tc-L linked to a sge2000p via the Gbic ports using GLC-SX_MM gbics but having no luck.Are these compatible and should I need to configure anything?
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Jan 31, 2013
There are a total of 7 systems on the network. The network has evolved from two small shops (3-4 computers each) to a single one with a sum total of 7 systems. Historically there were two ISP (which the new management would like to continue). Thus there are two NAT enabled devices at the last-mile from each ISP
Belkin F7D1301
Baton iBLR6111A
Networking is almost an unknown to me. An ip config on the computers in the network brought the realization there are 2 sub-nets ... at least it looks like there are 2 sub-nets (192.168.1.x, and 192.168.2.x).
My gut tells me the above mentioned modem/router cannot be connected & configured to be used transparently for the computers connected to the other modem/router without additional hardware. Is this right?
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Mar 27, 2013
I faced with a strange behavior of ME3600.For testing purposes I linked Cat3550 and ME3600 switches via trunk mode. All interfaces are in Up state. But I couldn't ping SVI200 of Cat switch from ME3600 and vice versa. [cde]
This scheme perfectly works with another L3 swithes. For example Catalist3750. I know that ME doesn't support VTP, DTP and so on. Also, I've tried latest software.
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Jun 27, 2012
I have Windows 7 x64 on my desktop, laptop, and HTPC. The past few months, everything worked fine. Today, I can ping my IP address but I cannot ping the host name on all 3.They also do not show anything in the network window, just the computer that I'm on.
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May 2, 2012
how to get the Computer name of any computer on the Network by using its MAC Address. I am really in need of it
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Sep 5, 2012
We have one business application, accessed across GCC region by having a single entry with individual computer hosts file, ie123.123.155.116 myappl.mycompany.com and other than Bahrain, all countries are able to successfully resolve the hostname (application only works against hostname (Oracle EBS)) against this entry with the hosts file. Now, prior contacting the ISP in Bahrain (where internet is regulated due to the current political situations) we need to know whether anything could be done from our end to resolve this issue.
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Dec 8, 2012
I have a small workgroup at home of about 4 or 5 computers. All the PC's, notebooks are running W7. I have one PC that I use as my "always on PC", with all my media and resources I use on it. The NetBIOS or computer name assigned to it is mediapc with a static IP of 192.168.254.150. All my other desktop PC's, excluding the notebooks, have a static IP also.The problem is more annoying then anything, and thus I only work on it intermittently. Today I decided to post after wasting much of another day attempting to resolve the issue.The problem is accessing my mediapc from any of my other computers while using the computer name, "mediapc". If I use the static IP assigned above, there is no problems. Everything works, RDP, Dameware, Telnet, SSH, Ping,Tracert, etc. If I use the computer name "mediapc" then it fails with an unreachable host error or similar. The reason it fails is because somewhere in my network or in the mediapc itself, it wants to resolve the "mediapc" name to an unknown IP of 192.168.254.47.
Now with this said, I can still share files and access the mediapc using the name in a UNC syntax, like //mediapc/data works fine or directly clicking on the mediapc share under Network works also. If I Ping mediapc from any other PC than itself, it fails with the 254.47 IP. If I try to use any remote connection software and use the name mediapc, it fails to connect.This is what I know and have tested:
1. Adding a host entry to all the client computers works but does not fix the root of the problem.
2. nslookup mediapc reports the wrong IP of 254.47
3. Remote connections as I mentioned above fail because the name is resolving to an invalid IP.
4. Pinging mediapc from itself, displays the correct IP of 254.150, although I have to use the -4 parameter.
5. Arp -a on all PCs report correct IP of 254.150 with the correct MAC address. (There is no 254.47 listed)
6. NBTstat -a mediapc reports correctly and shows the correct MAC address.
7. Network shares work correctly from and to the mediapc without issue. No access problems.
8. I have deleted all arp entries and flushed the dns with no change.
9. MS mentions to change order of the Bindings of the adapters, yet I only have one Local Area Connection.
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May 15, 2011
How is a computers hostname translated into an IP-address?Eg. when i enter "\server1" into the "run"-menu i get access to my server at IP-adress 192.168.1.2, but how does my computer know what IP-address is it?
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Dec 12, 2011
I manage the network of a small (120 users) network spread out over 5 sites within a 10 mile radius (for normal ops- extended ops can expand to include other cities).I think I'd call that a Campus LAN, perhaps it's just a really small MAN (for normal ops)...I am starting my CCENT/CCNA track so this may be blazingly obvious to some of you- but I'm sure to learn something either way...Every now and again we have to go find "hostname "X"" for an update that won't roll out by way of our (Server Sr SysAdmin's) tools, so we actually have to put hands on it. Unfortunately the prior admins didn't document the inventory to such a level that we know "laptop_015" is in the building down by the college.
I DO have documentation on my equipment (I'm the Network Sr SysAdmin) that I have rolled together over the last 9 months being here...I have a Cisco 5520 ASA, and use ASDM to manage it. What would be extremely handy would be the ability to put a query in the system to report back what switch a given hostname is plugged intoBetter yet, if it could tell me switch and switchport.I imagine this would be simple if I had the MAC address- there's got to be a way to grep the switches for a given MAC- but not sure if it'll work in a similar fashion for ARP lookups.
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Aug 31, 2012
I am having trouble with getting a copier that I have networked to stay registered in the system. When connecting all the equipment back for the new year I was having trouble getting this one specific copier back online properly. I used to have it assigned with a static IP because the person that was here before me had all the computers map the printer using the IP instead of Hostname but that was causing IP conflicts so I removed it and mapped the printer through Hostname which is made "MPF-TOSHRM328"So now for the actual problem, after the copier got the new dynamic IP of 10.8.214.151 i thought it would be fine and everything would click in because it was mapped to the host name and not the IP. But when I do a tracert on the hostname it still shows up with the old IP. and now that the old ip has been reassigned it actually points to a physical machine now. Weird. All attempts to flush the DNS have not resolved the issue. I even tried going in and deleting the entries in manually. No luck. As a point of reference here is the result from the tracert.Tracing route to MFP-TOSHRM328.78B450.nycboe.org [10.8.214.126] over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms SLS330W09 [10.8.214.126]Trace complete. I should also mention that this server is only here in the sense that it is the DC for the computers on this floor. There is a whole other system that assigns the IP's and handles the DNS. I do not have access to it, it is run by the main network people at the central offices.
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May 15, 2012
I want to know IP address ,If I know hostname {OR} I need to know hostname,If I know IP address.
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Aug 6, 2012
is there any way to apply hostname or object network in the syntax? The command gives the option to use hostname or A.B.C.D but doesn't accept the hostname PIX1(config)# filter url except 0.0.0.0 0.0.0.0 ?configure mode commands/options: Hostname or A.B.C.D The address of foreign/external host which is destination for connections requiring filtering Can an FQDN be used as a foreign/external host?
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Feb 10, 2013
Our Cisco team does inventory pulls with CNC and i was informed that this uses the hostname field currently the report pulls the IPadress, the discoveries that run on the LMS populates displayname field and puts the IP address in the hostname field. is there anyway to update this via query or process, i have too many devices to manually update this.
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Mar 7, 2013
I would like to allow a single computer to easily operate laser scanners one after another. A single laser scanner can create an ip address for it's "network" that a computer can connect to through an ethernet cable.Is it possible to connect a computer to the input port of a switch and to connect the laser scanners to the multiple output ports, then individually access the ports by connecting to each laser scanner's respective ip address?
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Jun 21, 2012
am running a sony vaio VGN_B1XP using windows xp proffesional. My problem is every time I switch my wireless lan switch on my computer trips off it flashes a blue page of writing that I do not have time to read. It then reboots itself.
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Jul 29, 2012
We have 2 internet providers and I would like to find some way to switch our 5 computers between the 2 internets without having to unplug the ethernet cables everytime someone wants to switch. Is there some type of switch we can buy for each computer to do this or is there no such thing?
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Mar 27, 2013
I have a Sony Vaio and it has been working fine and it Suddenly just disconnected itself from the wireless connection. I did troubleshoot and it fixed itself but it done it again minutes later and simple said a cable was disconnected. I restarted the laptop and it came on fine but it disconnected again and has not worked since. I have gone into the wireless connection settings and it says wireless isn't enabled. The switch is on and illuminated. I've switched it on and off. I have also done a system restore from a previous update just to be sure but there is no change?
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