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AAA & RBAC ACI
Default fallback login APIC GUI : apic:fallback\\admin APIC CLI : apic#fallback\\admin Step 1 : Create a TACAS+ Provider Group 2) Create...

Mukesh Chanderia
Nov 27, 20234 min read


ACI SPAN
SPAN (Switched Port Analyzer) Types of SPAN Local SPAN Support: Supported by Cisco. Functionality: Traffic is mirrored to an interface...

Mukesh Chanderia
Nov 26, 20233 min read


pcTag (zoning-rule) & Policy TCAM
Understanding pcTag in Cisco ACI 1. What is pcTag? pcTag (Policy Control Tag): A unique identifier assigned to each Endpoint Group (EPG)...

Mukesh Chanderia
Nov 21, 202310 min read


Shared Service
Shared Service Definition: A shared service, such as the Domain Name System (DNS), is utilized by multiple tenants (organizations) within...

Mukesh Chanderia
Nov 21, 20234 min read


Transit Routing in ACI
Default-export route profile with a prefix-list in the L3Out. In this scenario, the Legacy router must establish communication with the subnet 172.16.1.0/30, located behind the Partner Router, via the Cisco ACI fabric. The Cisco ACI fabric must seamlessly advertise and export the subnet 172.16.1.0/30, learned from the L3Out Partner, to the L3Out Legacy, enabling smooth and efficient routing across the network infrastructure. The above objective can be achieved by two ways. Op

Mukesh Chanderia
Nov 21, 202310 min read


Certificate in ACI
Steps to Install Certificate in APIC 1) Download root & intermediate CA certificate. 2) Open root CA certificate in notepad and copy...

Mukesh Chanderia
Nov 13, 20232 min read


Syslog & Backup in ACI
Step 1: Let’s use one of the leafs with ip 10.197.205.38 as remote server (Practically it would be server in your network) Step 2: We are...

Mukesh Chanderia
Nov 13, 20231 min read


EndPoint
Endpoint Definition: An Endpoint comprises: One MAC Address Zero or More IP Addresses Traditional Network Address Tables: In...

Mukesh Chanderia
Nov 13, 202326 min read
TCPDUMP
This is a very useful tool for capturing traffic destined for the leaf, spine or APIC i.e. within fabric. This method can be used also...

Mukesh Chanderia
Nov 11, 20239 min read


ELAM
ELAM Packet capture: Step 1: Kindly check the hardware module to see what inputs must be there in command i.e. tah/roc/app /// N9K-C*-EX- Leaf ----------------------- tah N9K-C*FX/FXP/FX2 -Leaf ------------ roc N9K-C*-GX – Leaf ----------------------app// Recommended Best Practices: To capture a packet with VLAN encapsulation on a downlink port, use 'in-select 6' . To capture a packet with VXLAN encapsulation (whether from a spine or a vleaf with VXLAN encapsulation

Mukesh Chanderia
Nov 5, 202315 min read


NTP in ACI
NTP uses the User Datagram Protocol (UDP) & all NTP communications use Coordinated Universal Time (UTC). NTP uses a Stratum to describe...

Mukesh Chanderia
Jun 17, 20235 min read


ACI Basics
The Cisco Application Policy Infrastructure Controller (APIC) works as a smart policy manager, sending the required policy settings to the fabric and applying any needed changes. It is separate from both the control and data planes, meaning it doesn't get involved in the traffic flow or affect traffic flow in any way . This separation allows the APIC to manage policies efficiently without affecting the movement of data in the network. The rules to connect the APIC server to l

Mukesh Chanderia
Jun 17, 202325 min read
APIC M1/M2/L1/L2 to M3/L3 Cluster Migration
Both APIC L1/M1 and APIC L2/M2 servers have reached their end-of-sales and end-of-life date. APIC servers forming a cluster must all run...

Mukesh Chanderia
Apr 24, 20234 min read


Application Centric Infrastructure
Topology Note : Direct spine-to-spine connections are possible in ACI Multi-Pod , not in ACI Multi-Site. ACI Multi-Pod: Spine switches...

Mukesh Chanderia
Aug 22, 202125 min read
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