Show arp command

[Aashir Afaq]

Hi!

I have configured my Cisco catalyst 1000 series switch everything is working fine and I can see the Mac address-table as well but when I use show arp command it only show 2 connected devices and one of them is router and second one is switch it self. It doesn't show other devices that are connected.

[MHM Cisco World]

if the SW is L2 (i.e. you dont config any SVI in SW) then this is normal 
the ARP send only from L3 interface, 
here all traffic is bridging through the SW not routing 

[Aashir Afaq]

Yes I haven't conf SVI and SW because it is not required by the company I
work for. So how can I access arp list without routing?

[MHM Cisco World]

What you see is what SW use for management traffic'

The SW need arp to send management traffic it not relate to data traffic which need l3 for routing traffic (data).

[Joseph W. Doherty]

Ping every possible subnet IP on subnet or ping subnet (not guaranteed all hosts will reply to latter).

[Aashir Afaq]

Some switches started to show attached devices after I used ip routing
command in configuration terminal, which have been up for about a week now
. But some are still not showing any devices
And they have been up for 3 days or 4.

[MHM Cisco World]

ip routing must used careful, we dont want to stop connectivity. 
ip routing is config only in SW that have SVI and work as these SVI is GW for SW otherwise the SW is L2 and dont need ip routing. 
the SW show arp is SW have SVI active and do inter-vlan between hosts 
the SW dont show arp is SW that have SVI (for management only)