Problematic access to Cisco.com via IPv6, other IPv6 sites OK (Google.com, youtube.com, facebook.com) IPv4 access to Cisco.com fine
I have an IPv6 tunnel to HE along with a routed /48. I have had this for a couple of years and it has been working fine.
In the last two weeks access to cisco.com has been problematic - pages will start to load and then stop, sometimes I get nothing. It seems like it might be an MTU issue but nothing has changed on my side for over 6-months? I have two proxy servers I can use (one is dual IPv6/IPv6, the other is only IPv4) as well as unrestricted Internet access from my source IPv4 & IPv6 address (IPv4 is NAT'd, IPv6 in native). If I force IPv4 then I can access cisco.com fine, if I use IPv6 then it doesn't work.
Access to other IPv6 sites work fine - google.com, youtube.com & facebook.com as well as any(?) of the various google results for 'ipv6 only sites'
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...