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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
CM
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