Access ports ARP entry not show

[mayurkpatel]

We are using Cisco Works for managing all Cisco Device.

Cisco work Campus Manager >> Endhost Entry Display Mac-address only not showing IP address.

So we are test on Switch (2960 IOS Ver 12.2(25r)SEE1)

Show ip arp

but it is show only native (vlan1) entry only but  Access port ARP entry not Display.

for referance sh run, sh vlan and sh ip arp command o/p are attached 

pls help

Mayur

[Jon Marshall]

mayurkpatel wrote:
We are using Cisco Works for managing all Cisco Device.
Cisco work Campus Manager >> Endhost Entry Display Mac-address only not showing IP address.
So we are test on Switch (2960 IOS Ver 12.2(25r)SEE1)
Show ip arp
but it is show only native (vlan1) entry only but  Access port ARP entry not Display.
for referance sh run, sh vlan and sh ip arp command o/p are attached  
pls help
Mayur

Mayur

The 2960 is a L2 switch.  L2 switches usually only record mac-addresses. The only time a L2 switch records an IP to mac-address is when the switch has a management interface with an IP address and you are pinging to that address or from that address.

If you have devices such as PC's/servers on this switch and you want to see their arp entries then you need to look on the L3 device that routes those vlans ie. find the devices default-gateway and then logon to that device and look at the arp table.

Jon

[mayurkpatel]

Hi Jon,

Sorry but in my diffrant network i am get those information in 2960

for your info. screensort attached.

Mayur

[Komil Shamgunov]

Hi Mayur.

Jon was right, your 2960 is configured as plain L2 switch, it doesn't perform routing for your access ports (there is no SVI for VLAN 3). So it doesn't need any arp entries.  The other config, the one that is on a screenshot, is config from switch that performs L3 routing, there is Vlan 141 interface on it, and it routes traffic for devices that connected to your vlan 141 access ports. So the second config for sure will collect arp entries.

Best regards,

Kamil

[Aleksander Garshin]

2960 is L2 switch only. I think you can view arp for vlan 141 because it is your management vlan.

[Komil Shamgunov]

Hi Garshin,

2960 supports SVIs and static routing, please take a look at link below.

http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_55_se/configuration/guide/swipstatrout.html

I'm not sure that it is there in 12.2(44)SE2 though.

I agree with you , it could be a management interface that learns network arps.

Best Regards,

Kamil Shamgunov