Link to home
Start Free TrialLog in
Avatar of Alexandre Takacs
Alexandre TakacsFlag for Switzerland

asked on

Cisco sg300 - port to IP mapping ?

Hello

is there a way to find out a mapping between physical port on the switch and the IP address of the connected device ?

Thanks & regards
Avatar of Sandeep Gupta
Sandeep Gupta
Flag of India image

more specifically..I think you want to see an IP address of the device connected to your cisco box?

if yes...

see your arp table..it will show you IP coming through connected port.

if it is DSL modem connected and you want to see the IP...then do "who" or "sh user"
Avatar of Alexandre Takacs

ASKER

see your arp table..it will show you IP coming through connected port.
Hmmm... Here is what I get:

  VLAN 1   00:08:5d:82:d1:e4    GE6    
  VLAN 1   00:08:9b:cc:cb:85    GE48    
  VLAN 1   00:0f:fe:2d:00:4c    GE7    
  VLAN 1   00:12:79:48:a2:56    GE50    
  VLAN 1   00:14:c2:3b:11:08    GE49    
  VLAN 1   00:15:99:4b:ac:15    GE50    
  VLAN 1   00:16:46:a2:f6:ce    GE8    
  VLAN 1   00:19:66:2d:15:02    GE29    
  VLAN 1   00:21:9b:72:f6:d0    GE5    
  VLAN 1   00:21:9b:73:00:63    GE23    
  VLAN 1   00:22:19:ca:7e:16    GE24    
  VLAN 1   00:23:18:f3:4e:93    GE35    
  VLAN 1   00:23:f8:62:ea:81    GE52    
  VLAN 1   00:25:64:b2:17:37    GE14    
  VLAN 1   00:40:8c:78:a8:6f    GE26    
  VLAN 1   00:c0:b7:61:58:21    GE36    
  VLAN 1   08:00:37:8e:ae:a8    GE50    
  VLAN 1   08:2e:5f:bc:95:b3    GE12    
  VLAN 1   14:fe:b5:de:4b:6e    GE30    
  VLAN 1   3c:07:54:27:ff:55    GE35    
  VLAN 1   80:ee:73:40:71:0a    GE31    
  VLAN 1   8c:89:a5:7d:c4:26    GE15    
  VLAN 1   8c:89:a5:7d:c6:41    GE25    
  VLAN 1   8c:89:a5:7d:cb:f1    GE3    
  VLAN 1   bc:30:5b:b0:e3:4b    GE9    
  VLAN 1   bc:30:5b:b0:e3:7b    GE11  

Open in new window


Better than nothing but if i could resolve the MAC to IP it would be most useful...
to which port of your device it is connected?

check cdp neighbor.
ASKER CERTIFIED SOLUTION
Avatar of giltjr
giltjr
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
You could enable DHCP snooping on the switch. That won't show you static IPs, though.

Tamas
Sorry a bit late responding - no sure how to "enable DHCP snooping" ? Most of our IPs are dynamic so it would be a godd starting point.
SOLUTION
Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
Thanks - I believe that with the various pointers you gave me I shall be able to figure out which IP is used on which port.