Dell Precision R5400 Remote Access Device: Task-Based User Guide  - Page 14

PCoIP Technology User Guide (Vol I) 5 Network Considerations PCoIP Technology uses routable IPv4 network packets. By default, the endpoints are configured for use in an enterprise network with minimal setup. This section outlines points that may affect some IP networks. The bulk of network traffic between the PCoIP Host and Portal is comprised of video, USB and audio media and is carried in IPsec-ESP packets. Other network protocols are used for configuration and control (see port numbers below). Full-Duplex Networks PCoIP Technology requires Full-Duplex Ethernet links. Older communication equipment including hubs and Half-Duplex switches are not appropriate for PCoIP Technology deployments due to the limited effective bandwidth. PCoIP Technology TCP/UDP Ports Table 1 summarizes the TCP and UDP ports used in PCoIP Systems. For networks with firewalls between the Host and Portal, the following ports must be open. Table 1: PCoIP Technology TCP/UDP Ports Port Port Number TCP Ports 21, 51, 80, 427, 443, 8000, 50000, 50001 UDP Ports 53, 67, 68, 427 Maximum Transmission Unit The PCoIP Technology firmware allows for configuration of the Maximum Transmission Unit (MTU) of the data packets. This allows for customization of MTU size for the network equipment used. See Packet Fragmentation below. The MTU parameter can be set using the Network webpage. © 2008 Teradici Corporation TER0806003 Issue 1 Figure 11: Network Webpage (MTU) MTU Parameter: • Default MTU size is 1400 bytes, can be configured from 500 to 1500 bytes NAT Traversal The PCoIP Technology data packets are IPSec encrypted and do not have any port numbers external to the encryption. As a result, the packets are not compatible with networking equipment (e.g. routers) that implement Network Address Translation (NAT). NAT networking gear can be used when PCoIP Technology network traffic is encapsulated in a tunneling protocol. This tunneling can be achieved using a hardware VPN link (see VPN section below). Packet Loss and Ordering PCoIP Technology is resilient to packet loss; however, performance will degrade as a function of the loss rate. Packet loss should be constrained to less than 0.1% for a good user experience. Packets that are reordered by network equipment are treated as lost. PCoIP Technology transfer and loss statistics are available on the Administration Web Interface, are made available to connection brokers and are also provided via an SNMP MIB. Page 14 of 25