I am trying to resolve some routing issues implemented by a previous network admin. 

I have two Dell S4128F-ON spines running OS10. I have VLAN24 designated for my camera system with two subnets. The main subnet is 172.20.24.0/24 and there's a secondary subnet that's only for two cameras at a remote site that's 172.21.24.0/24. I can ping all devices in the 172.20.24.0/24 subnet no matter which VLAN my computer is on, but the only way I can access cameras in the 172.21.24.0/24 subnet is to put my computer on VLAN24. So my inter VLAN routing isn't quite right for the 172.21.24.0/24 subnet.

Here's my current config for VLAN24:

interface vlan24
description CAMERAS
no shutdown
ip address 172.20.24.254/24
ip helper-address 172.20.1.20
ip helper-address 172.20.1.21
!
vrrp-group 24
virtual-address 172.20.24.1

I have tried to add "ip address 172.21.24.254/24 secondary" but it just breaks my connection to the two remote cameras. I also tried to add a new VLAN just for those two cameras, but it also broke my connection. 

172.20.1.20 and 172.20.1.21 are my DHCP servers.

The remote switch is an old HP with the following config:

vlan 1
name "DEFAULT_VLAN"
untagged 1-28
ip address 172.21.24.2 255.255.255.0
exit

 

Is there any way to fix this easily?