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Generally L2 switches may need to have QoS configured, typically on trunks where congestion is most likely to happen. But, typically, that would also mean that you need to classify and mark traffic &nbsp;as it is entering switch port. Cisco has already prepared voice configuration present on switches. You can configured <a href="https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/qos/configuration_guide/b_qos_152ex_2960-x_cg/b_qos_152ex_2960-x_cg_chapter_011.html" rel="ugc">auto QoS</a> on switches and modify configuration if you want.
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Generally L2 switches may need to have QoS configured, typically on trunks where congestion is most likely to happen. But, typically, that would also mean that you need to classify and mark traffic  as it is entering switch port. Cisco has already prepared voice configuration present on switches. You can configured auto QoS [https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/qos/configuration_guide/b_qos_152ex_2960-x_cg/b_qos_152ex_2960-x_cg_chapter_011.html] on switches and modify configuration if you want.

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Was there a comment you wanted to add, Stacy?
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Was there a comment you wanted to add, Stacy?

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Predrag;<br />
I have been told that the LAN QoS need to be applied @ Active directory level for Lync to work functionally sound, would you know of how to apply<br />
it? Is there any std. template available for it?
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Predrag;
I have been told that the LAN QoS need to be applied @ Active directory level for Lync to work functionally sound, would you know of how to apply
it? Is there any std. template available for it?

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We were having a bad quality audio during a large conf. call (around 45 attendees) on Lync and customer thinks it is coming from lack of CoS configuration on LAN devices. Do switches (L2) also need to have a CoS Configuration? Is there an approved std. template for Lync Voice/Video ports etc. ?<br />
<br />
Thanks;
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We were having a bad quality audio during a large conf. call (around 45 attendees) on Lync and customer thinks it is coming from lack of CoS configuration on LAN devices. Do switches (L2) also need to have a CoS Configuration? Is there an approved std. template for Lync Voice/Video ports etc. ?

Thanks;

L2 QoS

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.

Networking Hardware-Other

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

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

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.