About JUANNN

JUANNN · 07-12-2026

Hello, I am just trying to understand how ARP in the overlay is handled by SDA. I get all the operation an order of operations. But I have a doubt:When the endpoint sends the ARP request and the Edge Node intercepts it, and then the Edge Node sends t...

JUANNN · 06-13-2026

Good Day Outliers!I am doing a little lab here, after reading the Discontigous section in the CCNP/CCIE book for ENCOR (Official Cert Guide). The book states:Fair enough. But then it says:The book then states the 3 essential rules:So I was curious if...

JUANNN · 06-04-2026

Hello!I have a simple LAB:As part of understanding how CEF works, I wanted to see how the FIB and Adjacency Table deal with GRE tunnels. In this case, a simple P2P tunnel using GRE and a FVRF:R1:R2Traffic flows, all good. When I check the FIB on R1 f...

JUANNN · 01-24-2026

Hello,I am doing a little lab with VLXAN EVPN. I have configured the SPINE switches as border nodes, and peered them over iBGP with a WAN Edge router that is on SD-WAN. With the SD-WAN VPNs the setup and BGP peering was very straight forward. My SPIN...

JUANNN · 12-12-2025

Hello everyone,On my company, we are trying to implement Cisco SD-WAN NAT DIA on Service VPN 6136 only for traffic flows from O365 applications, through the public-internet local TLOC. We have 2 more transports: LTE (a low-bandwidth Internet link) an...

JUANNN · 07-11-2026

Hello @Boort ,Why does the L3 Handoff behave like this, if the underlay (GRT in the BN) is independent of Shared Services and their leaking to VNs? I am not saying the underlay does not need shared services reachability. It may do for DNAC, NTP, ... ...

JUANNN · 06-14-2026

Hello @Harold Ritter ,Thank you so mich for the answers. Before I mark it as solution, can you confirm if the picture of the book the is wrong? Because you said what the book also says:"An ABR should never install an LSA type 3 in the RIB if it is no...

JUANNN · 06-08-2026

Hello @ralpho1 You can you use a VACL (VLAN ACL). This way, you avoid the complexity of adding VRFs, and are more secure than SVI ACLs in your case since they affect both bridged and routed traffic, meaning that even if you have trunks on your core s...

JUANNN · 06-08-2026

Hello,Is the AI Assistant capable (or will it be capable in the future) to troubleshoot routing issues? For example, it can be something simple like: - Why is my site EXAMPLE not getting any Internet connectivity? and the AI Assistant could look at t...

JUANNN · 06-05-2026

Hello @Giuseppe Larosa ,Thank you for the answer. So to understand better, on the FIB, would it be correct to say that the 10.0.1.0/24 prefix entry takes care of both encapsulation and L2 header rewriting? If so, I would be expecting to see the "new ...

Member Since	‎09-23-2024 05:25 PM
Date Last Visited	‎06-27-2026 05:34 PM
Posts	97
Total Helpful Votes Received	18

User Statistics

User Activity

SDA ARP Handling

OSPF Discontigous Area 0

Cisco CEF with GRE Tunnel

Advertise default route into VXLAN EVPN

Cisco SD-WAN NAT DIA fallback to specific Transports

Re: L3 Handoff and LAN Automation

Re: OSPF Discontigous Area 0

Re: Isolate VLAN X from other VLANS

Re: AMA- Unlocking the Power of Cisco Catalyst SD-WAN AI Capabilities

Re: Cisco CEF with GRE Tunnel