Service function chain (SFC) is used to provide ordered services for the application layer. With these ordered services, SFC logically connects services on network devices. These services can be L4-7 like firewalls, network address translation [NAT], intrusion protection, antivirus etc. SFC allows network administrators want to define the path for service processing. This Service Function …
EVPN is a standards-based BGP control plane to advertise MAC addresses, MAC and IP bindings and IP Prefixes. EVPN be used for both layer 2 services including p2p services and p2mp services and layer 3 services. The beauty of EVPN is, it provides single control plane solution for both Layer 2 and Layer 2 services …
The EVPN introduced the concept of Integrated Routing and Bridging based on EVPN to address inter-subnet communication between VMs which are belong to different VxLAN segments. It is also called inter-VxLAN routing with 2 options; Symmetric IRB and Asymmetric IRB. In the asymmetric IRB we only have the concept of L2VNI. We also have another …
The distributed IP anycast gateway applies the anycast network concept“one to the nearest association.” Anycast is a network addressing and routing implementation in which the data traffic from an endpoint is routed topologically to the closest node in a group of gateways. The function of the Anycast Layer 3 gateway is natively embedded with the …
VXLAN allows us to create a logical topologies in the Data Center for our virtual machines. With VxLAN we are able to create a layer 2 network on top of layer 3 infrastructure. In the Data Centers VMs needs to be deployed in a specific segment of the network. These VMs can be moved from …
VXLAN allows us to create layer 2 networks over layer 3 infrastructure. The VXLAN base use case is to connect two or more layer three network domains and make them look like a common layer two domain. In the Data center environment this allows virtual machines on different networks to communicate as if they were …
A gateway is a device that ensures communication between VXLANs identified by different VNIs and between VXLANs and non-VXLANs. With the distributed gateway routing Layer 3 gateways are configured on leaf devices. With the distributed gateway deployment a leaf node only needs to learn the ARP entries of servers attached to it. VXLAN routing of …
A gateway is a device that ensures communication between VXLANs identified by different VNIs and between VXLANs and non-VXLANs. With the centralized gateway routing Layer 3 gateways are configured on one device, usually on Spine layer. It is the easiest way of deploying gateways but it has some disadvantages; There will be a lot of …