Cisco 1230 AP cDot11ClientAddress

What happens when you point a MIB browser at the top of the tree or run SNMPwalk on: .1.3.6.1.4.1.9.9.273.1.2.1.1 Do you MAC's under it? Probably not, but worth a try.

See: |

I can't find anywhere else where the MAC's might be listed. My usual brute force method is to connect with a known client, SNMPwalk the DOT11 part of the tree, and grep for the known MAC address of the client. It's in there, somewhere, maybe.

Whatever you're using as a MIB browser, did you grab *ALL* the MIB's? |

I allready did an SNMPwalk, there are some other OID's that show a MAC address. But there are no other OID's that give such a great overview of mac- & ipaddresses.

Very strange indeed, such a usefull table and only that collum not-accessible (by the web interface you can see a perfect overview of all connected clients!!) :-(

I allready did......for example in the rfc1213 mib, but not with the ip-address. Another advantage of cDot11ClientAddress OID is that it is always up to day.

Do you know a website or where on the cisco site i could see a list of known bugs for each IOS version? I'm now running IOS version 12.2(13)JA4

Frank Zwart

It's unusual to see the IP's because an access point is suppose to do everything at the MAC level (layer 2) and not get involved in IP layer (layer 3) stuff. I'm kinda suprised that the IP address is even listed. However, the AIR-AP1230A has a DHCP server, so I guess you're looking at the ARP table from the DHCP server. If true, then I suspect that clients with static IP's won't show up.

So it is written, so it shall be. (Yul Brenner in the C.B. DeMille version of The 10 commandments)

Yeah, it is kinda weird because it would be the perfect place to list the connections. I know you can dump ARP the table from IOS with: show ip arp brief show ip dhcp binding I would think that could also be extracted via SNMP, but I guess not.

The release notes for each version of IOS has all the fixed bugs. I don't think Cisco releases bug lists of unfixed bugs. (Note: I don't do much Cisco). Of course, there's the various security mailing lists and web piles:

You might try the same question in one of the Cisco specific newsgroups and mailing lists. Sorry, I don't have a fix (or explanation).

~ >> What happens when you point a MIB browser at the top of the tree or ~ >> run SNMPwalk on: ~ >> .1.3.6.1.4.1.9.9.273.1.2.1.1 ~ >> Do you MAC's under it? Probably not, but worth a try. ~ ~ >I allready did an SNMPwalk, there are some other OID's that show a MAC ~ >address. But there are no other OID's that give such a great overview ~ >of mac- & ipaddresses. ~ ~ It's unusual to see the IP's because an access point is suppose to do ~ everything at the MAC level (layer 2) and not get involved in IP layer ~ (layer 3) stuff. I'm kinda suprised that the IP address is even ~ listed. However, the AIR-AP1230A has a DHCP server, so I guess you're ~ looking at the ARP table from the DHCP server. If true, then I ~ suspect that clients with static IP's won't show up.

Actually, the AP sniffs the IP addresses in packets coming from the client, so it would see a client with a static IP (assuming that it emits packets.)

Aaron

Why use the web interface when the IOS command line is available? Either of these IOS incantations can be run via telnet or SSH from an Expect script, DOS batch file, shell script, Perl script, AWK/NAWK script, VBS script, etc to parse the output into useable form. show ip arp brief show ip dhcp binding Lots of examples of IOS scripting scattered all over the web.

You didn't really disclose what you were planning to do with the MAC and IP addresses. Are you building something like "ARPwatch" or "SNMPwatch"?

Thats correct, it does show the static ip's... but not the MAC's and as Jeff says: So it is written, so it shall be.

So snmp does not seems to be an option in this case i've need try it otherwise... I'm now trying to figure out how the code works the webinterface uses to retrieve the combination mac-ip.

Frank

ow f*ck, my laptop was configured as John doe but it's me Frank :-)