
Chapter 3: EIU datafill 97
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
47.105.150.1 |
|
|
|
|
|
|
CM |
|
| EIU 1 |
| 47.208.8.2 |
|
| 47.105.150.2 |
|
|
|
| |
Note: Packets for WS #1 are blocked while packets | WS #1 | WS #2 | ||||
from |
|
|
|
| 47.208.8.96 | 47.208.8.82 |
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 |
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.