Tcp/Ip Autocalls - Bay Networks Marlin Reference Manual

3.5.2 TCP/IP A
UTOCALLS
Operation TCP/IP ARP (Address Resolution Protocol) requests
(containing IP addresses to be resolved) and subsequent
MAC addressed packets will start an ISDN call to the
destination if no permanent or dial-up connection exists.
The bridge will start a connection to a remote bridge when
it receives a TCP/IP ARP request packet for an IP address
which has been defined in the Autocall Table. Once the
connection has been set up, the ARP packet will be sent.
Normally the destination will respond with its MAC address
which is returned to the ARP originator, who will not know
that a dial-up connection has been made to carry out the
request. If the address has already been resolved, but the
ISDN line has been dropped (for example, if there was no
traffic for 2 minutes), a subsequent IP packet will make the
line active again.
Installation Add an entry to the ISDN Autocall table of the Marlin
Bridge for an IP address (specific host destination), an IP
subnet (group of hosts), or an inverse subnet (i.e. any host
which is not in the local subnet). Each entry should contain
the IP address of the destination and the ISDN number (or
name) of the destination Marlin Bridge. The subnet mask is
specified by adding the number of significant bits to the IP
address:
1.1.1.78/32 is a specific host 1.1.1.78
1.1.1.0/24 is a class 'C' subnet 1.1.1
1.0.0.0/8 is a class 'A' subnet 1
!1.1.0.0/16 is for any address not in class 'B' subnet 1.1
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ETWORKING
E
XAMPLES
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