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3750 will be configured with at least 2 vlans. One vlan for routing to the ASA, and all other vlans for your LAN. The 3750 needs a default route pointed at the ASA -this can be done statically or via dynamic routing protocol such as OSPF or EIGRP. The ASA will need to have a route pointed at the 3750 for all internal subnets - this, like the default route, can be done via static or dynamic routing protocols.<br />
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From here it's just straight configuration on the devices. Configure your firewall with whatever ACL, NAT, and VPN you might need, and configure your switches with any vlans, trunks, or policies you need to use.<br />
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If you plan to configure &nbsp;DMZ on the firewall, use a separate interface on the firewall to connect to the 3750, and the DMZ vlan should be layer 2 only - let the firewall be the default gateway for all DMZ traffic unless you plan to configure advanced features on the switch like VRF or MPLS.
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3750 will be configured with at least 2 vlans. One vlan for routing to the ASA, and all other vlans for your LAN. The 3750 needs a default route pointed at the ASA -this can be done statically or via dynamic routing protocol such as OSPF or EIGRP. The ASA will need to have a route pointed at the 3750 for all internal subnets - this, like the default route, can be done via static or dynamic routing protocols.

From here it's just straight configuration on the devices. Configure your firewall with whatever ACL, NAT, and VPN you might need, and configure your switches with any vlans, trunks, or policies you need to use.

If you plan to configure  DMZ on the firewall, use a separate interface on the firewall to connect to the 3750, and the DMZ vlan should be layer 2 only - let the firewall be the default gateway for all DMZ traffic unless you plan to configure advanced features on the switch like VRF or MPLS.

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I have a cisco 3750 acting as a distribution switch a cisco 2960 as a access switch and a ASA 5515 as my way out to the internet how do I bring this together
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I have a cisco 3750 acting as a distribution switch a cisco 2960 as a access switch and a ASA 5515 as my way out to the internet how do I bring this together

How to configure a 3750 and asa5515 for internet access

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.

Network Security

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.