6.9.7 PTP (MPCPTP/PCPTP6 Channel-to-Channel link)

6.9.7.1 Function

The PTP is a point-to-point link to the driving system’s TCP/IP stack. From the point of view of the guest
operating system in the Hercules machine it appears to be an MPCPTP and/or MPCPTP6 ESCON CTC
link to another guest operating system.

6.9.7.2 Syntax

Descriptive

PTP -n --name]

---mac]

---mtu ]





*Linux only

[-i --ibuff




*Windows only

[-k --kbuff 4



*Windows only

---

---

[-d --debug]

guest1 host1

[guest2 host2]

Diagram

Êʬ¬¬ ¬¬¬ PTP ¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

-n ¬¬¬¬§¬¬¬ name

--

ʬ¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

-m ¬
¬¬¬§¬¬¬¬¬¬¬ mac ¬¬

--

ʬ¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

-t ¬
¬¬¬§¬¬¬ mtu

--

ʬ¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

-i ¬¬¬¬¬§¬¬¬§¬¬¬ ibuff ¬¬¬«

--

ʬ¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

-k ¬¬¬¬¬§¬¬¬§¬¬¬ kbuff ¬¬¬«

--

ʬ¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬Ê

---d
¬¬¬¬¬¬«

¬
--inet --
--debug

ʬ¬¬ guest1 ¬¬¬ host1 ¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ÊÍ

guest2 ¬¬¬ host2

6.9.7.3 Parameter

devaddr1-devaddr2

These are the device addresses (address pair) of the PTP device.

PTP

This specifies the PTP device/protocol type.

-n name

For Linux: Specifies the name of the tunnel device to use. The default name is
“/dev/net/tun”, which is correct for version 2.4 and above of the Linux kernel.

For Windows: Identifies the host network adapter. If your network adapter does
not have a permanent (static) IP address assigned to it (e.g. you use DHCP
and have a dynamic IP assigned) then instead of specifying an IP address you
must specify the MAC address of the adapter. TunTap32 will automatically se-
lect the first network adapter it finds if this option is omitted, this may not be
desirable depending on your configuration.

--dev name

This is the same as “-n name”.

--m mac

This is the optional hardware address of the interface in the format of either
“xx:xx:xx:xx:xx:xx” or “xx-xx-xx-xx-xx-xx”.

--macaddr mac

This is the same as “-m mac”.

-t mtu

Linux only: Specifies the maximum transmission unit size (default 1500 bytes).

--mtu mtu

This is the same as “-t mtu”.

-i ibuff

Windows only: This specifies the TunTap32 I/O buffer size in KB. nnnn hast to
be between 16 and 1024 (1 MB). The default value is 64 KB.

--ibuff ibuff

This is the same as “-i ibuff”.

-k kbuff

Windows only: This specifies the WinPcap device driver capture buffer size in
KB. nnnn hast to be between 64 and 16384 (16 MB). The default value is 1024
(1 MB).

--kbuff kbuff

This is the same as “-k kbuff”.

-4

Indicates that when a host name is specified for guest1, it must resolve to an
IPv4 address.

--inet

This is the same as “-4”.

-6

Indicates that when a host name is specified for guest1, it must resolve to an
IPv6 address.