An SR Policy is used to instantiate an ordered list of segments. If your path definition includes several segments, it can be encoded as a list of segment IDs. This SID List will be represented by an SR Policy. With SR Policy, there will not be state information on transit nodes because all path information …
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 …
Route reflectors (RRs) propagate only their best path over their sessions by hiding the other paths. This may not be the best path according to client point of view. ORR (Optimal Route Reflection) can solve that kind of problem. Use case for ORR is to avoid reflecting all paths to the client. Because Client may …
Segment Routing (SR) is a kind of source routing technology which means that the source can define the path that the packet will take. In source routing with SR, the hosts determine the path, encodes the path information to the packet header. Segment Routing divides a network into several segments and assign a segment ID …
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 …