Cabletron Systems DMS-100 User Manual

Page 97

Chapter 3: EIU datafill 97

DMS-100 Family EIU User Guide TELECOM12

Table EXNDINV filters IP packets. Only packets with a specified source IP
address can access DMS IP nodes. The SCRNFLG option in table
IPNETWRK enables this functionality

Figure 23 shows table EXNDINV filtering IP packets

Figure 23

Table EXNDINV filters IP packets

Datafill sequence and implications

For external nodes that communicate using ICMP, the following tables must
be datafilled before table EXNDINV:

•

PMLOADS

•

LIUINV (specifies EIU hardware)

•

IPNETWRK (specifies SuperNode network addresses)

•

IPROUTER (specifies EIUs as Ethernet routers)

•

ENSITES (specifies external node and service peripheral module [SPM]
sites)

•

ENTYPES (specifies external node types)

Note: Table IPROUTER is not required for interface EIUs.

Base_Tel-6

EIU 1

47.208.8.2

WS #1

47.208.8.96

47.105.150.2

47.105.150.1

WS #2

47.208.8.82

Note: Packets for WS #1 are blocked while packets
from

TABLE IPNETWRK

0 47 105 150 1 16 (EIU 1)$(SCRNFLAG Y)$

TABLE IPROUTER

1 EIU 1

47 105 150 2 47 208 8 2 YES YES

TABLE ENXDINV

EXND 0 WS#2 (ENIP 47 208 8 82)$ MER MER 1 A 1 HP_WS‘bmerh818’ ALL TCP ICMP UDP $ NA NA N