GRE over IPsec and IPsec over GRE are both tunneling configurations, but they have key differences in implementation and use cases. Key Differences When you apply crypto map directly on the GRE tunnel interface, IPSec encapulates the interesting traffic and then this IPSec packet is placed into GRE. interface Tunnel0 crypto map CMAP —————-> IPSec over GRE When […]
Step 1: Download all of acisim ver. 5.2-4d parts(1 to 8). Step 2: Combine all of the OVA files into a single OVA file after downloading them. C:\Users\reals\Downloads\ACI_SIM_VM>dir Directory of C:\Users\reals\Downloads\ACI_SIM_VM 02/20/2023 12:23 AM . 02/20/2023 12:23 AM .. 02/18/2023 02:42 PM 10,391,771,840 acisim-5.2-4d_part1.ova 02/18/2023 06:34 PM 10,391,771,840 acisim-5.2-4d_part2.ova 02/19/2023 01:42 AM 10,391,771,840 acisim-5.2-4d_part3.ova 02/19/2023 11:32 AM
Cisco Application Centric Infrastructure (ACI) Simulator Read More »
I just recently learned about this module, which is both powerful and allows me to simplify my code for updating ACL. There are numerous states/actions available depending on your requirements. refer to ansible link. https://docs.ansible.com/ansible/latest/collections/cisco/ios/ios_acls_module.html One of my use cases is to create a proposed configuration that parse data from a file and run it.
Ansible Module in Configuring ACL Read More »
1. Start the node Start the node Starting Auto Provisioning … Done Abort Power On Auto Provisioning yes – continue with normal setup, skip – bypass password and basic configuration, no – continue with Power On Auto Provisioning[no]: 2021 Feb 13 18:37:29 switch %$ VDC-1 %$ %POAP-2-POAP_INITED: [9MKTS0RQ5N5-50:00:00:02:00:07] – POAP process initialized Abort Power On Auto
Nexus 9k Basic Configuration Read More »
The VLAN ID specifies where 802.1Q tagged packets are sent and received on a specified subinterface. An 802.1Q VLAN subinterface must have a configured VLAN ID to send and receive traffic; without a VLAN ID, the subinterface remains in the down state. All VLAN IDs must be unique among all subinterfaces configured on the same
Different physical interfaces with same Vlan ID Read More »
A network-to-network interface (NNI) is a physical interface that connects two or more networks and defines inter signaling and management processes. It enables the linking of networks using signaling, Internet Protocol (IP) or Asynchronous Transfer Mode (ATM) networks. A network-to-network interface is also known as a network node interface (NNI). A NNI is used to provide the
Network-to-network interface (NNI) Read More »
What is point of presence (POP)? A point of presence is an artificial demarcation point OR interface point between communicating entities. It may include a meet-me-room. In the US, this term became important during the court-ordered breakup of the Bell Telephone system. A point of presence was a location where a long-distance carrier could terminate
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3 major network performance indicators / Base for network troubleshooting: – Latency is the time required to vehiculate a packet across a network. Latency may be measured in many different ways: round trip, one way, etc… Latency may be impacted by any element in the chain which is used to vehiculate data: workstation, WAN links, routers,
Network Performance: Links Between Latency, Throughput, and Packet Loss Read More »
Cisco Express Forwarding (CEF) is advanced, Layer 3 IP switching technology. CEF optimizes network performance and scalability for networks with large and dynamic traffic patterns, such as the Internet, on networks characterized by intensive Web-based applications, or interactive sessions. Layer 3 switch process a. Process switching – Requires the CPU to be personally involved with
Understanding CEF? Read More »
I. Overview We all know that in cisco in order to communicate vlans between different switches is we need to create a “Trunk Links” to pass the vlan traffic. Cisco switchport modes: 1. Dynamic – Pro-active DTP negotiation will begin and if the other-side is set to trunk, desirable, or auto. The interface will become a trunk.
How vlan Works on HP Switches Read More »
