I have two switches connected to each other. Switch-A is the core switch which connects to mutliple switches and Switch-B is connected to hosts.
On Switch-B, I see an arp entry and mac-address entry for a particular host. But on Switch-A, I am only seeing a mac-address entry for the host but no arp entry.
The issue is, we use DHCP reservations for hosts, and therefore the host does not get its DHCP reserved address.
I can ping the DHCP server from Switch-B and Switch-A.
I doubled\tripled check the correct MAC address of the host's network interface on the DHCP server's reservation entry, and it has the correct MAC address of the host's interface.
Is there anything else I can do to make this works? I am sure I am missing something.
Thank you all and have a great New Year!
I do not see an ARP entry for the host on Switch-B, but I do see an entry in the Mac-Address table, and the same holds for Switch-A.
If switch B is not routing then you should only see the mac in the mac address table. Not sure why you have a default route on switch B if it is not routing though.
What about switch A. Is that the switch where all the inter vlan routing is done ?
The DHCP server is in the 10.10.70.x network, what is the vlan for that and where is the routing done for that vlan ?
To understand how/why things work you need to understand what switches are doing what.