:: 300-415 – I ate the Sandwich!!
Today I'm going to share my experiences for the 300-415 ENSDWI, also called the EN-Sandwich exam, which I took this week. The exam was highly overdue. To my opinion, I…
Today I'm going to share my experiences for the 300-415 ENSDWI, also called the EN-Sandwich exam, which I took this week. The exam was highly overdue. To my opinion, I…
:: Protocol details Gateway Load-Balancing Protocol: Used over Layer-2 segments to provide redundant gateway functionality for IPv4 and IPv6Cisco Proprietary: Other vendors don't/cannot use this protocolFunctions: Gateway redundancy and load-sharing*…
During my labbing adventures for SD-WAN I thought creating a SD-WAN network is simple. It actually is when you just replicate Internet and MPLS network by one box and use…
Before we jump in adding vEdges to controllers it's good to know how many roads lead to Rome. The Cisco SD-WAN solution has two types of software platforms: vEdge (Viptela…
EtherChannels AKA LAG, Port-channels, NIC teaming, etc Main goal is to improve bandwidth and forwarding capabilities.LAG hides each member from an upper layer protocol, in this case STP. Where STP…
TTL (or Time To Live) is a Layer-3 loop prevention mechanism. Every time a packet passes a Layer-3 hop, the TTL decrements with 1. Packets with a TTL of 0…
IEEE 802.1Q An additional of 32 bits are added to packet header consisting of: Tag protocol identifier (TPID): 16 bitsBelow are part of the TCI structure and is divided in…
I've noticed that deploying SD-WAN controllers come with special treatment. Working your way through it and deploying more config than needed could result in controllers not being added to vManage…
The catalyst 6880-X has been here for a while now and has already been announced for End-of-Life in October 2019. Last day of support will be Oct 2025. Before that…
:: Partner delivered Cisco Partners can host en sell their own SD-WAN infrastructure to customers as part of value added service. By utilizing their own compute environment they can host…