Routing and Switch, Data Center Technology, Configuration, Troubleshooting, Setup and Design Architecture.
If you ask a network engineer about “resiliency,” you’ll often hear about redundant links, fast OSPF or BGP convergence, and high-availability clusters. But what if that’s only a tiny piece of the puzzle? What if true resiliency isn’t about the network never breaking, but about what happens—or doesn’t happen—when it inevitably does? Inspired by a […]
Network Resiliency Is NOT About Redundancy Read More »
001 Understanding X-Forwarded-For (XFF) Header X-Forwarded-For is like a tagging system where each proxy/load balancer adds its mark to document the request’s journey, and the final destination reads those tags to understand where the request really came from. It’s Like Adding a Shipping Label Think of the HTTP request as a package: Original package: Comes
Citrix Netscaler XFF Header Read More »
001 Netscaler SSL Setup Overview The NetScaler appliance provides several methods for handling SSL/TLS traffic, each with a different approach to encryption and decryption. Here is a summary of the three NetScaler SSL deployment modes: SSL offloading: With SSL offloading, the NetScaler appliance terminates the secure SSL/TLS connection from the client and decrypts the traffic. It
Citrix Netscaler SSL Setup Read More »
001 WLC Management in DNAC Cisco DNA Center Overview Cisco DNA Center (DNAC) supports a range of wireless controllers, primarily the Catalyst 9800 Series, as well as older Catalyst 3504, 5520, and 8540 WLCs, and those running Catalyst WLC software (IOS XE). Compatibility Matrix Netconf Overview The purpose of the Network Configuration Protocol (NETCONF) is
001 Netscaler VPX Initial Setup (Using EVE-NG) In this lab, I’m using EVE-NG to simulate and set up the Citrix Netscaler VPX. Below are the steps I followed for the initial configuration. Step 1: Login to Netscaler VPX Use the default credentials to log in: Username: nsroot Password: nsroot Upon your first login, you’ll
Citrix Netscaler Introduction Read More »
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 »
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 »
