Periodically, my network of 3 Catalyst 5500 switches with RSM's will "hiccup". This will cause some applications on the network to lose connectivity. When the network hiccups I see HSRP recalculate. I have HSRP set up between the RSM's in the 5500's. Recalculation takes just a few seconds, but enough to blow away some applications. I have tried a few suggestions from TAC but still cannot get rid of the hiccup. Latest attempt was to replace some perceived faulty hardware that may have been dropping packets. Did not work. Next recommended TAC step is to put code on all 5500's at level 5.5.11. I'm still not confident that this will help. Are there any fresh ideas out there?
Related: Sometimes I see an HSRP recalculation on a couple of VLAN's with no adverse impact on the network. Is it to be expected that in the normal operation of things that some HSRP recalculations will occur?
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...