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Configuration of IP-Forwarding Media Cards 115
interface basis. This field is also used to specify ISO when an ISO address is
being added to an interface’s IP address. Specify the MTU value as
mtu xxxx.
Leave the arguments field blank if you are not using it.
The following excerpt from our /etc/grifconf.conf file shows the format of an
entry:
# name address netmask broad_dest arguments
ga010 10.1.1.1 255.255.255.0 - mtu 9180
ga0180 10.1.2.1 255.255.255.0 10.1.2.2
As you can see, we have defined the first logical interface to be broadcast
and the second interface to be point-to-point.
4.2.5 Specify ATM Card Parameters
Changing the following profile is not mandatory. You can safely use the
defaults. Refer to
GRF Configuration Guide 1.4,
GA22-7366 if you intend to
change settings.
4.2.6 Configuring PVCs
To configure a logical interface that supports PVCs, make entries in these
configuration files:
1. /etc/grifconfig.conf
Assign an IP address to the logical interface.
2. /etc/grarp.conf
Supply IP-to-physical address mapping information for the ARP service.
Put an entry into /etc/grarp.conf
only
if the remote destination does
not
support InATMARP, which the GRF does.
3. /etc/gratm.conf
• Traffic shaping section
Set the traffic shaping name and quality of service parameters. The
name may be any meaningful string you like.
• Signaling section
Set
protocol=NONE on the signaling entry for the appropriate card and
connector combination.