User guide

PCoIP Technology User Guide
14
5 Network Considerations
PCoIP Technology uses routable IPv4 network
packets. By default, endpoints are configured for
use in an enterprise network with minimal setup.
This section describes factors that may affect
some IP networks.
The bulk of network traffic between the PCoIP
Host and Portal consists of video, USB, and
audio data, 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 their limited effective bandwidth.
PCoIP Technology TCP/UDP Ports
Table 5-1 summarizes the TCP and UDP ports
used in PCoIP Systems. For networks with
firewalls between the Host and Portal, these
ports must be open.
Table 5-1: 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 (MTU)
The PCoIP Technology firmware allows
configuration of the Maximum Transmission Unit
(MTU) of data packets. This allows
customization of MTU size for the network
equipment used (see Packet Fragmentation,
below).
The Maximum MTU Size can be set using the
Administrative Web Interface’s Network
webpage:
Figure 5-1: Network Webpage (MTU
configuration)
Maximum MTU Size configuration:
• Default Maximum MTU Size is 1400 bytes,
and can be set from 500 to 1500 bytes
NAT Traversal
PCoIP Technology data packets are IPSec
encrypted and do not have any port numbers
external to encryption. As a result, the packets
are not compatible with networking equipment
(e.g. routers) that implements Network Address
Translation (NAT).
NAT networking gear can be used when PCoIP
Technology network traffic is encapsulated in a
tunneling protocol as well. This tunneling can be
achieved using a hardware VPN link (see Virtual
Private Networks section, below).
Packet Loss and Ordering
PCoIP Technology is resilient to packet loss;
however, performance degrades as a function of
the loss rate. For good user experience, packet
loss should be limited to less than 0.1%.
Packets reordered by network equipment are
treated as lost.
PCoIP Technology transfer and loss statistics
are available in the Administration Web
Interface, management tools (PCoIP
Management Console, connection broker, etc.),
and are also provided via an SNMP MIB.