16. Networking and TCP/IP

Networking / TCP/IP

Network configuration

NICs

VETHET switch (INtime V6)

XCNT

Special interest topic

Bridging

Routing

Link aggregation

Firewalls

Filtering (BPF)

link and server redundancy management (CARP)

Networking KB:

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=154

I/O and Device Drivers KB:

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=150

Device discovery and initialization KB:

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=6

Under INtime Networking KB:

Migration

1.1 Migrating your pre-4.0 INtime network application

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=35

Advanced Networking Concepts

2.1 Bridging, Routing, and Switching with INtime

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=181

2.2 Advanced Networking Documentation (Free BSD handbook)

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=32

2.3 XCNT (connector device driver) (virtual device driver for INtime Network7 TCP/IP stack)

(Share a single network device with istack and HPE, sample program xcnt_hpe)

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=40

2.4 Bridging INtime Network Interfaces

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=42

2.5 Disabling Spanning Tree Algorithm on Windows Bridge

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=59

2.6 VEtherbridging/ routing configurations

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=43

2.7 Getting Windows Vether MAC Address

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=46

Network Drivers

3.1 Supported network interface cards

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=4

3.2 Legacy network support drivers

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=15

3.3 Command line options for Legacy network drivers

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=22

3.4 Trouble shooting: Net7 / HPE2 drivers

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=44

Raw Sockets

4.1 Using RAW sockets

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=30

4.2 UDP IPv4 Broadcast

https://tenasys.com/resourcesv/knowledge-base/knowledge-base-page/?pageNum=33

Network config:

The Configuration utility is the front end for this, in the Network tab for the node you are configuring. Basic configuration is possible including IP address assignment (IPV4 & 6), DHCP configuration, DNS configuration and static route configuration. Configuration information is written to a set of text files in %INTIMECFG%\[nodename]\etc\..

The files can be edited manually for more detailed configuration, such as creating bridges, or turning on debug output from a driver.

On DRTOS, use websadm to configure the network, the same set of files also exists in /config/[nodename]/etc in the DRTOS filesystem.

For general information about configuration of "Network Driver Options", see:

http://support.tenasys.com/INtimeHelp/#nedrvopt.html

For specific information about different interface drivers, "Network stack drivers", see:

http://support.tenasys.com/INtimeHelp/#net7_drvr.html

See “Net functions” in this page for configuration API information, "LNC Function Calls":

http://support.tenasys.com/INtimeHelp/#lnc_functioncalls.html

Information for a variety of topics can be found here, "Reference section":

http://support.tenasys.com/INtimeHelp/#ovw_net7.html

Virtual Ethernet

This page:

http://support.tenasys.com/INtimeHelp/#ref_virt_ether_conf.html

explains configuration of Virtual Ethernet, including information on creating a bridge. There is a KB article on bridging too.

https://tenasys.com/resources/knowledge-base/knowledge-base-page/?pageNum=42

XCNT:

This is a software driver for TCP/IP which delivers and receives its packets from an API in an application. This is useful for an application which may forward packets to and from an HPE interface.

See reference documentation http://support.tenasys.com/INtimeHelp/#xcnt.html and sample project “XCNT-HPE sample” project.

Link aggregation:

Achieved through LAGG in INtime. See reference page for configuration samples: http://support.tenasys.com/INtimeHelp/#lagg.html

Redundancy, address sharing

This is achieved through the CARP feature in INtime: http://support.tenasys.com/INtimeHelp/#carp.html

Firewall, filtering

The INtime firewall utility, ipfw, is described here: http://support.tenasys.com/INtimeHelp/#util_ipfw.html

Packet capture (PCAP)

This library and interface allows for the capture of network packets to and from the network stack using a utility called tcpdump. Tcpdump can save the data in a format which is displayable using Wireshark.

http://support.tenasys.com/INtimeHelp/#pcap.html

http://support.tenasys.com/INtimeHelp/#util_tcpdump.html