Dell 6248 Find port of IP address

From CLI you can use the following command

Show bridge address-table

That will show you a list of the ports and the MAC address of the device plugged into the ports.

in the Web interface, at Switching > Address Tables > Dynamic Address Table, you can enter a MAC address and it will tell you what port it's connected to.

Thanks

Ok and how do I associate the mac-address to an IP address ?

On your client you can do ipconfig /all and see the MAC and IP address of the device.

Thanks for the tip but my device is not a computer so this doesn't really help, I will repeat my question: How can I find which port correspond to a specific IP address ?

I apologize, I am not aware of any commands that will directly show you the IP address of the device plugged into each port on the switch. There are quite a few different networking management software available, including dell's open manage network manager, which have some network mapping. But I don’t know that they would provide the information you are looking for.

Something you could try, but I am not sure it would work, is to run this command.

Show IP arp inspection

And see if that will list the IP addresses in the ARP table and its respected MAC address.

Please keep us updated with any progress on this.

Thanks.

Hi, this is what is returned from this command, I don't know if I should enable or disable something in this configuration to have IP address returned.

Dell6248#show ip arp inspection

Source MAC Validation.......................... Disabled

Destination MAC Validation..................... Disabled

IP Address Validation.......................... Enabled

VLAN  Configuration Log Invalid           ACL Name                Static flag

----  ------------- ----------- --------------------------------  -----------

  1       Disabled     Enabled

 10       Disabled     Enabled

 20       Disabled     Enabled

 30       Disabled     Enabled

 40       Disabled     Enabled

 50       Disabled     Enabled

 70       Disabled     Enabled

145       Disabled     Enabled

180       Disabled     Enabled

Dell6248#

*********

On my cisco SGE-2010 switch I can issue this command to get the port of an ip address and I was hoping to get someting like that on the Dell switch:

Cisco-SGE2010# show arp ip-address 10.10.20.1

ARP timeout: 60000 Seconds

 VLAN    Interface     IP address        HW address          status

--------------------- --------------- ------------------- ---------------

vlan 20                    10.10.20.1      00:26:f2:b8:8b:32     dynamic

Hmmm, ok, lets try show arp switch, I think that will show us the mac and associated ip address.

Hi, here is the result of the show arp, problem is that I see only IP in vlan 20 and not on other vlan... and the one I need to find are on vlan 10...

Dell6248>enable

Dell6248#show arp

Age Time (seconds)............................. 1200

Response Time (seconds)........................ 1

Retries........................................ 4

Cache Size..................................... 1024

Dynamic Renew Mode ............................ Disable

Total Entry Count Current / Peak .............. 3 / 4

Static Entry Count Configured / Active / Max .. 0 / 0 / 64

 IP Address        MAC Address      Interface        Type        Age

---------------  -----------------  --------------  --------  -----------

10.10.20.1     0026.F2B8.8B32     vlan 20         Dynamic    0h  0m 11s

10.10.20.2     5C26.0AC0.109C     vlan 20         Local         n/a

10.10.20.56    6C62.6D05.FF2E     vlan 20         Dynamic    0h  0m 14s

Dell6248#

I tried that already but since the swith as only 1 IP address for vlan20 it can't ping the vlan 10 IP that are located on other port on that same switch...

Something we could try is to ping the IP address for that device, see if it will update the arp cache on the switch, then run the show command again.

You should be able to ping any IP address from the switch console itself. Also the command we should run is "show arp switch" above you just ran "show arp". We should have a different output between the two commands.

Hi, result from the show arp switch command:

Dell6248>enable

Dell6248#show arp switch

   MAC Address        IP Address     Interface

------------------- ---------------- ------------

when I try to ping the address:

Dell6248#ping 10.10.10.10

Pinging 10.10.10.10 with 0 bytes of data:

Reply From 10.10.2.2: Destination Unreachable.

Reply From 10.10.2.2: Destination Unreachable.

Reply From 10.10.2.2: Destination Unreachable.

Reply From 10.10.2.2: Destination Unreachable.

----10.10.10.10 PING statistics----

4 packets transmitted, 0 packets received, 100% packet loss

round-trip (msec) min/avg/max = <10/<10/<10

Address: 10.10.2.2 is the default vlan ip address of the switch

The ip is valid and I can ping it from my computer no problem but not from within the switch.

C:\>ping 10.10.10.10

Envoi d'une requête 'Ping'  10.10.10.10 avec 32 octets de données :

Réponse de 10.10.10.10 : octets=32 temps<1ms TTL=127

Réponse de 10.10.10.10 : octets=32 temps<1ms TTL=127

Réponse de 10.10.10.10 : octets=32 temps<1ms TTL=127

Réponse de 10.10.10.10 : octets=32 temps<1ms TTL=127

Statistiques Ping pour 10.10.10.10:

   Paquets : envoyés = 4, reçus = 4, perdus = 0 (perte 0%),

Durée approximative des boucles en millisecondes :

   Minimum = 0ms, Maximum = 0ms, Moyenne = 0ms

Thanks for trying. maybe someone else will have some suggestion.

I apologize, I have not been able to find a command that produces the same results as the cisco switch command does.

Connect to the IP address of the switch through an ssh or telnet client, like Putty. You'll be prompted for your username and password. Once your in, type "show bridge address-table" to see the mac address table of the switch. I'm not 100% certain that the port numbers are correct, however. I'm still trying to figure out how to refresh the data.

Also, you can connect to the console through your web browser. Once you're in, navigate to Switch>Address Tables>Dynamic Address Table to view the MAC address to port table.