GES – Users Manual
Page 15 of 33
7. Management Processor Ethernet Communications
7.1. Network Communications Supported
The GES management processor supports ARP, ICMP (ping), and UDP communications. UDP
traffic is supported on port 3500. All fields are sent in network byte order. This means that fields
larger than a byte will be read and written using standard access routines. These routines are
host-to-network-short “htons()”, host-to-network-long “htonl()”, network-to-host-short “ntohs()”
and network-to-host-long “ntohl()”.
7.2. General Format of a GES UDP Packet
1 1 1 1 1 1
5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
Length (in words)
Opcode
Additional words (if required)
Length – Length of the GES UDP Packet in words.
Opcode – Operation performed by this packet.
