<div>
If it really does not need to route, the you don't need to code one unless it requires you to.<br />
<br />
If you have to code one and you really, really don't want/need it to route then code it as a IP address that does not exist &nbsp;and document that IP address should NEVER be used.<br />
<br />
However, just remember the alarm system does not have a valid default route, you have NO network access to it unless you are using a host that is on the same IP subnet.
</div>


<div>
... or if you use SOURCE NAT when connecting remotely to that network.
</div>


<div>
A DG needs to be configured for the alarm system. I have the alarm systems and its devices in its own vlan 200 (10.10.200.0/24). So I setup the DG as 10.10.200.1 which is the HSRP IP address for my 2 cores switches (10.10.200.2 and 10.10.200.3). I think that sounds correct. Any thoughts?
</div>


<div>
Yes. That is what I got. I configured hsrp on my core switches with 10.10.10.1 like I mentioned in my previous thread. Thx
</div>


<div>
Please re-read your &nbsp;previous posts. &nbsp;You seem to be interchanging VLAN's and subnets.<br />
<br />
In your original post you stated the alarm system was on VLAN 10, 10.10.10.0/24 and you had VLAN 200, 10.10.200.0/24.<br />
<br />
In your prior &nbsp;post you stated you were going to configure the alarm system to point 10.10.200.1, which is NOT the subnet you originally stated the alarm system is on.<br />
<br />
I pointed this out and then you stated, yes, that is what I said 10.10.10.0/24?<br />
<br />
So which is it, is the alarm system on 10.10.10.0/24 or on 10.10.200.0/24? &nbsp;<br />
<br />
If it is on 10.10.10.0/24, what default router did you code for it?
</div>


<div>
Yes sorry. They keep changing the subnets on me. Let say that the alarm system is 10.10.10.0/24. I have the DG as 10.10.10.1. My cores have hsrp as 10.10.10.1 and each of the core has 10.10.10.9 and 10.10.10.10 as the SVI IP address.
</div>


<div>
<div class="content wysiwyg-content">
I have this scenario. I have the alarm system on vlan10 with 10.10.10.100/24 subnet. Below is the snapshot of my network:<br />
<br />
MPLS&lt;--&gt;Core switch2&lt;--&gt;access switch1&lt;--alarm system.<br />
<br />
&nbsp;The alarm system doesn't need to be routed within my internal network. switch1 has DG as 10.10.200.1 (vlan200). my core is a layer 3 switch has SVI 200 with 10.10.200.1.<br />
<br />
&nbsp;<br />
What is the DG for my alarm system?<br />
<br />
Thanks
</div>
</div>


I have this scenario. I have the alarm system on vlan10 with 10.10.10.100/24 subnet. Below is the snapshot of my network:

MPLS<-->Core switch2<-->access switch1<--alarm system.

 The alarm system doesn't need to be routed within my internal network. switch1 has DG as 10.10.200.1 (vlan200). my core is a layer 3 switch has SVI 200 with 10.10.200.1.

 
What is the DG for my alarm system?

Thanks

default gateway

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

Switches / Hubs

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

Network analysis is the process of identifying and remediating the processes and systems within a network, including performance, connectivity and security. The process is performed through the use of tools developed for monitoring and analyzing network activity. Network problems that involve finding an optimal way of doing something are studied under the name combinatorial optimization. Examples include network flow, shortest path problem, transport problem, transshipment problem, location problem, matching problem, assignment problem, packing problem, routing problem, Critical Path Analysis and PERT (Program Evaluation & Review Technique).