Configuration of IP-Forwarding Media Cards 133
4.4.11 Using grstat to Display GRF Statistics
Use the grstat -w70 all <interface> command to display the curr ent statistics
of the FDDI card’s IP stack. The following is an actual screen shot:
# grstat all gf001
gf001
ipstat
count description
2958246 total packets received
3 packets dropped
2958226 packets forwarded normally
17 packets handled by the card
ipdrop
last last
count source addr dest addr reason
3 10.10.1.10 192.168.14.1 TTL expired
icmperr
last last last last last
count type code val source addr dest addr e rror
icmpin
last last last
count type code source addr dst addr
icmpout
last last last
count type code source addr dst addr
3 TIMXCEED INTRANS 10.10.1.13 10.10 .1.10
#
4.5 HIPPI Configuration
This section provides the steps to configure the High Performance Parallel
Interface (HIPPI) media card of a GRF.
4.5.1 Introduction to HIPPI
HIPPI poses interesting configuration problems because of the number of
ways HIPPI connections can be established. Several addressing schemes
can be used, depending upon how a site needs to organize and connect
equipment to support a range of user needs.
Not only are there several addressing schemes, but a HIPPI media card can
be configured to process all of them. The HIPPI media card is capable of
handling both HIPPI-SC switching protocol and IP packet routing, and, based
on information field (I-field) indicators, can dynamically alternate between