We have a customer that is having some voice quality issues with a branch connected over an internet connection. The voice traffic is being tunneled through a GRE tunnel and then encrypted while being sent over the internet. The encryption is being done firewall to firewall and the GRE tunnels are terminated on routers behind the firewalls.
What are some things that can be done in this configuration to help with the voice quality issues?
make sure that the qos is end to end.. do l2 qos on the local lan.. but if it goes through internet, u really cannot predict the performance.. there is no guarantee of latency and bandwidth over internet... make sure you take care of this..
WAN router -> PIX -> WAN connection (wireless internet) -> Router running IOS firewall -> WAN router
There is a GRE tunnel setup that terminates on the WAN routers at both locations. The VPN encryption is setup PIX to the router running IOS firewall. Am I correct in thinking QoS would have to be setup on all four of these devices?
Also, what does the inspect skinny and inspect h323 command do?
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...