Need a MAC address...

How do I find the MAC address for a Laserjet 2100M? Have checked the label on the printer, but there's nothing there as far as I can see. Any suggestions?
Adam

Try printing your printer's network configuration report. It should show up as one of the line item.
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Similar Messages

More info needed on MAC address

Hi,
I have a post in the same forum regarding a problem I have been having since I moved last week: I am getting a self assigned 169 IP address and can't therefore connect to the Internet. I have been doing many things and nothing has been working...
However, I am able to connect to a PC without any problem...And I found a way to connect with the Macbook but it's only good until I restart: I use the MAC address of the PC and I change my Macbook MAC address for the one I see on the PC through a command in Terminal and bingo, I can connect (until I restart and I guess take back the Macbook MAC address).
I don't know much about Mac address so if there is anyone who can explain to me what is going on, it might help me to fix this issue once for all!! It seems like the modem likes the PC MAC address better!!
Thanks!

Small world
-I don't see any actions possible on the MAC address 'page'.
-Only the Mac is hooked to it (there is only one ethernet socket).
-In another page (of the modem's web setting page), there is this message:
Resetting the cable modem to its factory default configuration will remove all stored parameters learned by the cable modem during prior initializations. The process to get back online from a factory default condition could take from 5 to 30 minutes. Please reference the cable modem User Guide for details on the power up sequence.
...That's what I should try giving your last comment.
It's bed time soon in Helsinki but I will post again this week end...Hopefully, it will be to say that it is solved
Cheers,
Julie

HT5299 which is my ethernet mac address when in a retina with adapter?

Hi,
I need to get my ethernet mac address, but i have a macboock pro retina displays that only have wireless connection. I bought the gigabit ethernet adapter, but i need the mac address because the University system that will provide me the net connection needs it to allow my computer to the net.
Where can i find it?
Thanks!

Plug the adapter into the MBP-R (*) and go to System Preferences > Network > Thunderbolt Ethernet > Advanced.
(*) You may also have to plug an Ethernet cable into the adapter at least once. Mine has been plugged in, and I didn't check the MAC address before the first time, so I can't tell for sure.

Mac address - mac mini

does anyone know how to find the mac address[not ip address] for a mac mini? i need its mac address to connect to a network?

This solution is not applicable for Mavericks or Yosemite. If you are using either of these two OS do this: Go to System Preferences>Network in the left column choose the method you connect to network (e.g. Ethernet, WI-FI etc) click on Advanced>Hardware. This will show you your MAC Address.

Getting the MAC address of the iPhone

Hi,
In order for an iPhone (or any other network device) to access or wi-fi network, it needs to be registered. I would like to make it so that they don't have to register it every time and to do that, I need the MAC address of the device. Users will be registering via a webpage using the browser on the phone. Is there any way in the midst of that process that I can query the iPhone for it's Mac address?
Thanks,
Rob Tanner
Linfield College

You can get the MAC address for your iPhone at Settings > General > About > Wi-Fi address.
There is not a way to query the iPhone for the MAC address to be entered automatically in the space provided when registering the iPhone's MAC address via the webpage, but it can be written down in advance for manual entry of the address.

Mac-address ipad air

In order to connect to my network I need the MAC-address of my brand new iPad Air.
I have to setup the MAC in my router before it allows logging in.

Problem solved - thanks Apple support. I had to disable the access list in my router momentarily to get the iPad Air to connect. After that I could find the mac-address, enter it into the router access list and enable it.

How to get MAC Address of a stolen laptop by using Serial number?

Hi my Lenovo G560 laptop was stolen on 17/04/13. I have the serial number. In order to trace the laptop, I need the MAC address. Unfortunately I don't know the MAC address of my stolen laptop. My question is, is it possible to get the MAC address by using serial number?
Serial Number: xxxxxxxxxx
Moderator Note; s/n edited for member's own protection

hi Subrahmanya,
Sorry to hear about your trouble. Unfortunately, the only way to get the MAC address is to run a query on the unit (physically or or remotely). Using the serial number to query information on the system will list the devices that are included on the unit (this doesn't include the MAC address).
Regards,
neokenchi
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WRT600N weird MAC Address issue

I've had the Linksys WRT600N for several months. One day the internet connection stopped working, after I power cycled it, I called support and they had me change the router to clone MAC address after that it worked. If I took off the cloned MAC the internet wouldnt work. So I got curious after that and I restored the router the settings file I had backed up previously. I tried my internet connection and everything worked. No clone MAC address, however, after about a month it stopped again. The issue was making sure clone mac address was on. My question is why does that keep happening there shouldnt be a reason that it would need my computers mac if my isp doesnt need me to do thaa. (ISP = Optimium) Has anyone had this problem or know what the cause is?

You have to tell what you did exactly if it did not work.
Generally: many ISPs (most cable ISPs) only grant you a single public IP address, i.e. a single device connected to their service. Most do this by storing the MAC address of the device connected to the modem. If you connect a different device with a different MAC address into the modem they won't accept it. You won't get an IP address. You don't have internet. Only the device with the MAC address stored (or a modified MAC address set to the stored MAC address) will have internet.
Some ISPs reset the stored MAC address if you call them. With a few ISPs this is the only option.
Most ISPs reset the MAC address after a few hours of inactivity or in fixed intervals.
Some ISPs recognize if you reset the modem and reset the MAC address then.
After it is reset you can connect a different device and it will get the IP address.
Now, if your internet at some point does not work and for a test you connect the computer directly to the modem and you get internet then, at that moment you already have locked in MAC address of the computer and you have to use the MAC address clone on the router.
Thus, if you need the MAC address clone or not depends on what you did when exactly after how much time of inactivity when the internet did not work anymore.

Multicast mac-address Nexus 7k

Hi,
i'm going to use Nexus 7000 in Data Center.
During analysis configuration, I need define mac-address-static configuration for multicast mac address for Firewall Checkpoint cluster.
In "Layer 2 Switching Configuration Guide, Release 4.1.pdf" documentation speak about
"Configuring a Static MAC Address
[..]You cannot configure broadcast or multicast addresses as static MAC addresses[..]"
Have you a suggestion to manage this problem and why is it not possible configure mac address static multicast?
Regards
Dino

Joseph - The ClusterXL A/A configuration is a variation of the StoneSoft or Rainfinity clustering technologies that have been used to cluster Solaris and other *NIX flavored servers and firewalls for years. (In fact, StoneSoft filed suit against Check Point in Europe 8 or 9 years ago for patent violations, and lost.) These configurations were very common on Check Point clusters running on Solaris from the late 90's forward - and, as you describe, have unicast IP's with a multicast MAC for the VIP. Even from the days of installing these on the brand new (at the time) 2900 series switches you had to do exactly as you state above - static MAC entries (or in some cases port mirrors) so traffic was directed to both active switch ports. In Active/Passive mode Check Point ClusterXL clusters are almost always "plug and play" today - rarely do the switches need anything beyond speed/duplex settings. The VIP assumes the MAC of the physical NIC it is currently bound to, and therefore there are no issues as far as switch config or proxy ARP entries on the gateways. All of these issues have to do with traffic flowing to the VIP and through the firewall, and the ability of the switch to correctly identify which physical switch port(s) the VIP is currently patched in to. This is one of three types of traffic associated with ClusterXL itself. The second is state synchronization, which is accomplished through a crossover cable and therefore not relevant. Even when using a switch state sync is a typical TCP 18181 connection from a unicast IP/unicast MAC on one gateway to the other through a dedicated interface pair.
The challenge described by CJ is not with the traffic flowing to the VIP, however. It is an entirely separate process - Check Point Clustering Protocol (aka CPHA if filtering in WireShark) is essentially the heart beat traffic. Every interface pair within a Check Point cluster continually communicates with its "partner" interface on the other cluster members. If any packet takes over 100ms or shows more than a 5% loss the gateway is forced in to "probing" mode where it falls back to ICMP to determine the state of the other cluster member. Depending on the CPHA timing settings an active gateway will failover to the passive in as quickly as 500ms or so. ClusterXL will fail over the entire gateway to the standby to avoid complications with asynchronous routing.
Out of the box, CCP is configured to use multicast, but it supports broadcast as well. To change this in real time (no restart required) simply issue the command:
cphaconf set_ccp {broadcast/multicast}
At the Ethernet level, CCP traffic will always have a source MAC of the Magic MAC of 00:00:00:00:xx:yy where XX is the “Cluster ID” – something identical on each cluster member but unique from one cluster to another, and YY is the cluster priority (00, 01, etc.) based on the priority levels set on cluster members within Dashboard on the cluster object. The destination MAC will always be the Ethernet broadcast of ff:ff:ff:ff:ff:ff.
At the IP level the source of CCP will always appear as 0.0.0.0. The destination will always be the network address (ie, x.x.x.0).
Similarly in multicast mode you will see the same traffic at the IP level but at the Ethernet level the destination will now be a IPv4 multicast MAC (ie, 01:00:5e:4e:c2:1e).
In a tcpdump with the –w flag opened in WireShark and a filter applied of just “cpha” (without the quotes) you should see a continual stream of traffic with the same source and destination IPs on all packets (0.0.0.0 and network IP), the destination of either a bcast or mcast MAC and the source MAC alternating between 00:00:00:00:xx:00 and 00:00:00:00:xx:01.
Long story short, the problem CJ is describing is a behavior on the 7K where a packet capture taken on the Check Point interface itself (ie, tcpdump –i eth0 –w capture.cap) ONLY shows CPHA traffic from it’s own source MAC and no packets from it’s partner. A tcpdump on the 7K itself will show traffic from both.
As CJ mentioned, a simple NxOS upgrade will fix the issue per:
This one:CSCtl67036 basically pryer to NX-OS 5.1(3) the nexus will discard packets that have a source of 0.0.0.0. Which in broadcast mode is exactly what the CCP heartbeat is. We bypassed this one.CSCsx47620 is the bug for the for static multicast MAC address feature but it requires 5.2 code on the 7k
(NOTE:Additional RAM may be required for the 5.2 update)
Also note that Check Point gateways do support IGMP multicast groups, given that you have the correct license. It is a feature of SecurePlatform Professional on the higher end gateways or as a relatively inexpensive upgrade on the lower end boxes or open platforms. For lab purposes you can simply type “pro enable” at the CLI (without the quotes). As of the latest build there is no technical limitation (no license check) so you can enable advanced routing features as needed for testing in a lab. For step by step details on configuring IGMP on SPLAT Pro go to the Check Point support site and search for sk32702.
This can be a frustrating issue to troubleshoot, so hopefully this helps someone avoid the headaches I ran in to.

MAC address problem

Hi all,
I am a newbie and would really appreciate it if someone can answer the following questions.
1. How does it work if a packet is send from one network to another network and the MAC of destination if unknown? My understanding is the sender's network gateway mac address is used as the MAC destination address. But how is it send to the destination?
2. Why do we need a MAC address? Isn't IP address enough?
3. How come there are some MAC address which does not exist in the network topology?
Many thanks again.
Richard

Richard
An IP address is not enough because the IP addresses cannot change (unless you are doing NAT but that is not relevant to this) but the mac addresses have to. An example might help -
H1 -> (int gi0/0) L3 switch (int gi0/1) -> S1
H1 = 192.168.5.10
S1 = 192.168.6.10
H1 wants to send a packet to S1 so it needs to send the packet to it's default gateway It does this by using the mac address of the gi0/0 interface on the L3 switch -
src mac = H1
dst mac = L3 gi0/0
src IP = 192.168.5.10
dst IP = 192.168.6.10
the L3 switch receives the packet and sees the destination IP is S1 and it has a direct connection so it sends the packet to S1 -
src mac = L3 int gi0/1
dst mac = S1
src IP = 192.168.5.10
dst IP = 192.168.6.10
notice how the IPs never change but the mac addresses do at each L3 hop.
If you just used the IP it wouldn't work because if the IP was the L3 gi0/0 IP the L3 switch would not know what the destInation IP is meant to be.
Note that i didn't cover ARP which resolves an IP to a mac address because i just wanted to keep it simple.
Hopefully that's helped with questions 1) and 2).
Not sure what you mean by question 3) ?
Jon

Airport ID (MAC Address) on MacBook Pro?

Where can I find my Airport ID (MAC Address) on my MacBook Pro? Also on my Time Capsule? I'm getting ready to set up MAC ID access control on my network and need the MAC Addresses for each of my network access devices. Thanks!

martywrites wrote:
I certainly appreciate these replies, but need a little more clarity. I went to Airport Utility > Manual > Summary and found two Airport ID's, identical except for the last digit, suggesting that they're my two Canon MP990 printers which are operating normally in Wi-Fi mode.
no. printer IDs will not show there at all. all that you see there is for the time capsule only. those must be two ids for 2.4 GHz and 5GHz modes which are separate. there should also be an ethernet addresss ther I would think. you might want to verify this by asking on the TC forum.
But when I use my MP990s to print out their MAC ID's, they're completely different from any Airport ID on the Airport Utility Summary.
correct. see above. to find the MAC addresses of the printers just print out test pages on each. that info should be included there.
Then I found an Ethernet ID, which I can't identify with any particular device on the network.
that's the ethernet MAC address of the TC itself.
Maybe it's the MacBook Pro, or maybe the Time Capsule itself.
How can I set up an accurate list of which device has which MAC ID so I can have some control and add or remove as needed. I need accurate ID's for my two MacBook Pro's (the second one will arrive Christmas Eve), iPod Touch (which I'll open on Christmas Eve), the two printers, and (if needed) the Time Capsule itself. Thanks!
we told you two methods of finding MAC addresses of every computer. either use network system preferences or system profiler via apple menu->more info->network
I haven't got an ipod touch (that would be the only kind of ipod with a mac address) but this page explains how to find the MAC address of an ipod touch.
http://www.technipages.com/ipod-touch-find-mac-address.html

Will my MAC Address change after updating OS?

I am using wi-fi network that needs the mac address. If I update my Firefox OS version, will the mac address be changed again?

Here is a few things that you can try.
1. Try booting to safe mode by holding the shift key while starting up.
2. Reset the SMC
3. Reset the PRAM
Hope this helps!

Get MAC Address Of Device On The Other End Of Crossover Cable

If you have a SonicWall UTM available to you, connect to it. Monitor the logs, if the device is on a different subnet, you'll get a spoofing notification with the IP in question (if the device has an IP already assigned to it). I believe the MAC address will also show in the logs. Now I'm guessing that other firewalls/UTMs will also have similar alerting.

Hey guys
So I got a proprietary device which I need the MAC address for in order to set the IP and reset credentials via a weird web UI, and the MAC is not written anywhere.
So I connected this device to my laptop via a crossover cable and tried to nmap various common subnets (including the entire private space) to see if it maybe had a static IP. No dice. So how can I get the MAC address of this device using only my laptop, since I can't get into it?
This topic first appeared in the Spiceworks Community

Get MAC-address of IP Phone using CallManager Express

Good evening,
at the moment I am developing some XML-services for Cisco IP Phones. Now I want to personalize some pages and to make that reality I need the MAC-address of the IP Phone to verify the user.
After a lot of research I found out how to do it with CallManager (use #DEVICENAME# in the url), but I didn't found out how to do it with CallManager Express. I have tried the solution for CCM in CCME, but that didn't work out. So, my question is: How can I get the MAC-address of an IP Phone with CallManager Express?
Greetings.

you only have to use #DEVICENAME# when you are using a CallManager IP phone service. Under CME, simply set your services URL and the phone will automatically append the ?name=SEPXXXXXXXXXXXX parameter for you. If you configure your services URL on CME as http://10.1.1.1/MyApp the request will be http://10.1.1.1/MyApp?name=SEPXXXXXXXXXXXX
(where SEPXXXXXXXXXXXX is the device name of the phone making the request)
C

MAC address and wifi

I just bought a MacBook Pro. It was set up at the shop.
When I brought it home, the MAC address showed up as f8:1e:df:e2:d6:71
My Dlink router says it is an invalid address. I've never had the problem with my other Macs and iPod Touches on my home network.
Any idea how I can make it a valid address?

The home network has MAC filtering because our connections seem to drop out from our router all the time.
Very strange that my Airport iD starts with f8 as all my other computers (PC and Mac) and ipod Touch are all 00 addresses.
So I am concluding that
1) I cannot change my MAC address.
2) My dlink cannot accept my MAC address.
I am currently spoofing my address. Which is heaps annoying because I have to go through the process of changing it everytime I turn on my computer.
I have yet to try this Mac on other wifi systems. But I hope I won't run into any trouble with wifi that might need my MAC address.

Need a MAC address...

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