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viktor (51 Posts)

Implementing VXLAN on NX-OS part 2: Anycast RP with MSDP, Phantom RP, BGP EVPN, inter-VXLAN routing with Symmetric IRB

viktor
BGP Cisco GNS3 Multicast Networking Switching VXLAN

We continue the previous VXLAN lab first by providing redundancy for the RP. I'll show two methods: Anycast RP with MSDP and Phantom RP which…

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Implementing VXLAN on NX-OS part 1: basic VXLAN operation, multicast flood and learn

viktor
Cisco GNS3 Networking Switching VXLAN

VXLAN is tunneling protocol, which is mainly used in data centers. With VXLAN we can encapsulate the whole Ethernet frame in a UDP datagram. VXLAN…

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Hacking networks with Scapy (Part 1): attacking DTP/Spanning Tree

viktor
Cisco GNS3 Hacking Kali Networking Python Scapy Security

Scapy is a very powerful packet crafting, packet manipulation tool written in Python. With the help of Scapy we can perform many kind of malicious…

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BGP Additional-paths vs. Multipath

viktor
BGP Cisco Networking

In the following post we're going to take a look at these two features: what are their purpose and in which situations can they be…

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BGP AS-PATH manipulation techniques: local-as, prepending, allowas-in, as-override

viktor
BGP Cisco Networking

The AS-PATH is one most interesting BGP path attribute. It's a well known, mandatory, and transitive path attribute, so it must be included in every…

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Implementing Unified MPLS

viktor
BGP Cisco MPLS Networking Redistribution

Because of scalability reasons we might have multiple IGP processes running within our core network. If we have many routers and prefixes we might have…

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