Routing issue

I am experiencing what I think is a routing issue and was wondering if anyone could help shed some light on this.

Our old configuration was
HP 5406zl (was gateway)-> Cisco firewall-> peplink load balancer-> Internet

Our new config is
HP 5406zl-> Meraki MX400 firewall (now gateway)-> Internet

Our Internet is running really slow and I think it is because of a routing issue. I do a tracert to 8.8.8.8 and it makes weird hops until it hits onvoy (our fiber provider).

hop 1 is to 172.20.1.254 (our gateway)
hop 2 is to 10.4.79.10 (not sure where this is going)
hop 3 is to 172.31.12.74 (used to be the vlan between core and firewall, 172.31.255.0/24 was our old transit vlan)
hop 4 is to Onvoy

I am digging around in the HP core and can not find anything as far as routing or gateway settings. We have redundant HP cores set up also but only one is connected to the firewall.

We have combined 250mb of ISP bandwidth, with that the network should not be as slow as it is. I manage a single school environment
with 2000 devices. Last year we had 150mb and none of these problems.

Thank you for your suggestions

Thall860 said:

We have redundant HP cores set up also but only one is connected to the firewall.

Click to expand...

Which might explain your delays depending on the configuration of them. Or the HP device is still pointing to hardware that's been removed from the network.

By 'core' I assume you mean switches?

if you're not sure what the 10.4.79.10 address is, you need to find it. likely you have something old still in the mix and it needs removed or fixed.

also i'm not sure how the FW handles multiple circuits (which it sounds like you have), but you could have asymmetric routing going on....

need more detail on why you removed the load balancer and what your circuits look like (layer 1 - 3)