Which Network Design Solution Will Best Extend Access Layer Connectivity To Host


Remember how the core provides a backbone for connecting the distribution blocks? Well, it is possible for distribution switches to take on this responsibility themselves. It is a very feature rich layer, as it needs to support so many different endpoints. As it’s the network edge, it’s the first line of defense for security, and is a logical QoS trust boundary.

Private addresses are unique in relation to other computers on the local network. Routers are found at the boundary of a LAN, connecting them to the larger WAN. In MP-BGP EVPN, any VTEP in a VNI can be the distributed anycast gateway for end hosts in its IP subnet by supporting the same virtual gateway IP address and at what added volume of base does the second equivalence point occur? the virtual gateway MAC address . With the anycast gateway function in EVPN, end hosts in a VNI always can use their local VTEPs for this VNI as their default gateway to send traffic out of their IP subnet. This capability enables optimal forwarding for northbound traffic from end hosts in the VXLAN overlay network.

The Bonjour Gateway feature snoops and caches all Bonjour service advertisements across multiple VLANs and can be configured to selectively reply to Bonjour queries. Alternatively, the guest WLAN/SSID can be locally switched to a VLAN within the branch which provides direct Internet access . For Cisco FlexConnect guest deployments, the guest WLAN/SSID can be centrally switched and anchored through a dedicated guest controller in an Internet DMZ segment. A hot patch does not need a system reload – meaning that clients and APs will not be affected when applying the hot patch.

However, the traditional designs drive more complex configurations with additional protocols that must be kept consistent across multiple devices. The technology, therefore, allows Enterprises to virtualize access devices to which branch or campus the routers terminate, converting them into nV Satellite devices, and to manage them through PE nodes that operate as nV hosts. The satellite only provides simple functions such as local connectivity and limited local intelligence that includes ingress QoS, OAM, performance measurements, and timing synchronization. An alternative that can handle Layer 2 access requirements and avoid the complexity of the traditional multilayer campus is called a Layer 2 access with simplified distribution layer design. The design uses multiple physical switches that act as a single logical switch, such as switch stack or Cisco StackWise Virtual Pair , or the less preferred single, highly-redundant physical switch.

In this model, the fabric WLCs communicate wireless client information to the fabric control plane, and the fabric APs encapsulate traffic into the VXLAN data path. A centralized architecture uses the controller as a single point for managing Layer 2 security and wireless network policies. It also enables services to be applied to wired and wireless traffic in a consistent and coordinated fashion. Cisco Umbrella also provides network administrators visibility of Internet activity across all endpoint devices on or off the corporate network.

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information.

The LAN is the networking infrastructure that provides access to network communication services and resources for end users and devices spread over a single floor or building. You create a campus network by interconnecting a group of LANs that are spread over a local geographic area. Campus network design concepts include small networks that use a single LAN switch, up to very large networks with thousands of connections.

STP is an open standard protocol, used in a switched environment to create a loop-free logical topology. Establish a limited number of traffic classes within the network that need special handling (for example, real-time voice, real-time video, high-priority data, interactive traffic, batch traffic, and default classes). A trusted edge around the network to guarantee that users cannot inject their own arbitrary priority values and to allow the organization to trust marked traffic throughout the network. Expedited delivery service of communications for supported, real-time applications. Discovery—Builds and maintains an up-to-date inventory of managed devices, including software image information and device configuration details. Cisco DNA Center is key to enabling automation of device deployments into the network providing the speed and consistency required for operational efficiency.

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