I was wondering if there is something in the VPN Mibs ( or elsewhere ) that will let me figure out if a particular device is acting as a HUB, spoke or full mesh device for a given VPN. I tried using the Route target type - Import/Export/both, but it didn't seem to help in the MIB I was looking at
If I knew that a router was acting as a hub, I could then probably find the spokes for it, but I haven't figured out how to do that yet.
Thanks for the replies. I read that when configuring Hub and Spoke, the Hub routers are generally in one VPN, and the Spokes are in another. Is this always the case or could they ever be in the same VPN?
I cut and pasted out of a Cisco doc and added it below. Maybe different VPNS was the wrong wording.
Actually, I'm trying to find out for a client connected via a VPN, which routers act as Hubs and Spokes. The doc actually says that the Hubs and Spokes have different VRFs (an upstream and a downstream), not VPNs.
I want to look at the MIBs for the VRfs to see
if I can figure out whether the path is actually going to be full-mesh or hub and spoke. I then want to be able to see for a given VPN, the Hub/Spoke relationships.
I.E. Find which are the hubs and which spokes go through which hubs. Thus if a Hub goes down, I'll know certain Spokes are now unreachable.
Here is output from the doc:
Table 1 Feature Information for Configuring Scalable Hub-and-Spoke MPLS VPNs
Feature Name Releases Feature Configuration Information
MPLS VPN: Half Duplex VRF Support 12.3(6)
This feature ensures that VPN clients that connect to the
same PE router at the edge of the MPLS VPN use the hub
site to communicate.
The following sections provide information about this
â¢ Overview, page 2
â¢ Upstream and Downstream VRFs, page 3
â¢ Reverse Path Forwarding Check, page 3
â¢ How to Ensure that MPLS VPN Clients Use the Hub PE
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...