About bravealikhan

bravealikhan · 11-06-2025

Hi everyone, We’re running a dual-hub DMVPN (Phase 3) environment on Cisco ISR 4400 routers (IOS-XE 17.9.x).All spoke routers are dual-homed — each forms tunnels to both DC-A and DC-B hubs. Recently, several spokes lost their BGP peering with DC-A, w...

bravealikhan · 08-27-2025

Hi, I’d appreciate some support in better understanding vPC behavior when VXLAN is configured. Scenario: Two Data Centres (DC-A and DC-B). In DC-A, SW01 and SW02 are configured in a vPC peer. VXLAN is configured between DC-A and DC-B for route exc...

bravealikhan · 06-17-2025

Hi, On a Cisco Catalyst 9200L switch, under the interface connected to a modern Access Point, I’m observing some packet drops as shown in the output below. Question:Is it a common behavior for all the ports to drop packets like this, and could we tun...

bravealikhan · 05-29-2025

Hi, I want to remove local username from Cisco devices via Ansible Scipt, its required interactive action once we remove local username, Scipt is not working due to 2nd line confirmation, where we manully hit enter to confirm. e.g.: SW Cli: (config)...

bravealikhan · 03-01-2025

Hi, RTR1, RTR2, and SW1 are physically connected, and there is an EIGRP neighborship established among them. RTR1 is the primary router for SW1, and RTR2 is the backup. I set up static routes with track 500 on both RTR1 and RTR2 so that if RTR1 goes ...

bravealikhan · 11-13-2025

The issue has now been resolved. We discovered that the Hub Tunnel IP was also being advertised from one of the branch sites due to a static route configured there. As a result, DMVPN spokes were receiving the tunnel IP from both the Hub and that bra...

bravealikhan · 11-08-2025

Hi - follow are some details: DMVPN underlay and NHRP sessions are fully stable — all spokes show as up on both hubs. IPSec/IKEv2 tunnels are established and remain stable without rekeying or drops. BGP is running as dynamic iBGP over the DMVPN ov...

bravealikhan · 08-27-2025

Why they are down? Is it by admin actions or any disaster? -- Due to failover activity Do you observe the same when SW01 is reloading?-- SW01 wasn't reloaded - it just we admin shut all the ports for failover testing What is the VPC role of both swit...

bravealikhan · 08-27-2025

@Pavel Tarakanov Thanks Pavel, its a very standard Data Centre Topology - when DC-A-SW01 went down (all ports down on SW01 including peer links and keepalive) - its admin shut the inerface loopback1 on SW02 which is the source interface for NVE1 to ...

bravealikhan · 05-30-2025

Done with some internet searches tasks:- name: Remove user '99999999'cisco.ios.ios_user:name: "99999999"state: absent

Member Since	‎06-10-2009 03:30 AM
Date Last Visited	‎11-13-2025 06:05 AM
Posts	58
Total Helpful Votes Received	13

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Dual-Hub DMVPN Design – BGP Adjacency Drops Despite Stable IPSec/NHRP

vPC VXLAN - Loopback1 and NVE1 Shutdown Behavior

Switch Port - Interface Total Drops and Giants Packets

How to remove local username via Using Ansible Script

Static Route with AD 250 - Redistribution in EIGRP - Behavior

Re: Dual-Hub DMVPN Design – BGP Adjacency Drops Despite Stable IPSec/N

Re: Dual-Hub DMVPN Design – BGP Adjacency Drops Despite Stable IPSec/N

Re: vPC VXLAN - Loopback1 and NVE1 Shutdown Behavior

Re: vPC VXLAN - Loopback1 and NVE1 Shutdown Behavior

Re: How to remove local username via Using Ansible Script