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Practical Experiences Overcoming Firewalls and Limited Bandwidth for H.323 Video Conferencing AREN
AREN Quick Overview ,[object Object],[object Object],[object Object],[object Object],[object Object]
So What’s the Problem? ,[object Object],[object Object],[object Object]
The Small Pipe Issue ,[object Object],[object Object],[object Object],[object Object],[object Object]
The Huntsville Example
Where did we enable QoS? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Cisco Router Config Example class-map match-all VTC-hosts match access-group name VTC-list ! policy-map QoS-VTC class VTC-hosts bandwidth percent 50 set ip dscp ef class class-default fair-queue ! ip access-list extended VTC-list permit ip any any precedence critical permit ip any any dscp ef permit ip any host 192.168.2.20 permit ip host 192.168.2.20 any interface FastEthernet0/0 description School LAN bandwidth 100000 ip address 192.168.2.1 255.255.255.0 speed 100 full-duplex service-policy output QoS-VTC ! interface Serial0/0 description to Core Router bandwidth 1544 ip address 172.20.2.2 255.255.255.252 service-policy output QoS-VTC !
QoS Through Firewalls? ,[object Object],[object Object],[object Object]
Problems With Firewalls (and NAT) ,[object Object],[object Object],[object Object]
Solutions to the Firewall Problem ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What do you mean “Don’t NAT”? ,[object Object],[object Object],[object Object],[object Object]
NAT with a “Smart” Client ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Polycom Setup Example
NAT with a “Smart” Firewall ,[object Object],[object Object],[object Object],[object Object]
Additional Application Proxy ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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h323oversmallpipesfirewalls.ppt

  • 1. Practical Experiences Overcoming Firewalls and Limited Bandwidth for H.323 Video Conferencing AREN
  • 2.
  • 3.
  • 4.
  • 6.
  • 7. Cisco Router Config Example class-map match-all VTC-hosts match access-group name VTC-list ! policy-map QoS-VTC class VTC-hosts bandwidth percent 50 set ip dscp ef class class-default fair-queue ! ip access-list extended VTC-list permit ip any any precedence critical permit ip any any dscp ef permit ip any host 192.168.2.20 permit ip host 192.168.2.20 any interface FastEthernet0/0 description School LAN bandwidth 100000 ip address 192.168.2.1 255.255.255.0 speed 100 full-duplex service-policy output QoS-VTC ! interface Serial0/0 description to Core Router bandwidth 1544 ip address 172.20.2.2 255.255.255.252 service-policy output QoS-VTC !
  • 8.
  • 9.
  • 10.
  • 11.
  • 12.
  • 14.
  • 15.