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Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure IPNBK IP Node block
LAN Table management fields
0000 0 Character 1 IPNTYPE IPNBK Type
000000E4 IPNTYPUC C'U' IPNTYPUC Unicast IPNBK
000000D4 IPNTYPMC C'M' IPNTYPMC Multicast IPNBK
000000C2 IPNTYPBC C'B' IPNTYPBC Broadcast IPNBK
000000D9 IPNTYPRX C'R' IPNTYPRX Router IPNBK
0001 1 Bitstring 1 IPNPROTO Protocol (see IPAIPVER)
00000004 IPNIPV4 4 IPNIPV4 IPv4 Protocol
00000006 IPNIPV6 6 IPNIPV6 IPv6 Protocol
0002 2 Bitstring 1 IPNFLAGS IPNBK flags
1... .... IPNDEACT X'80' IPNDEACT DEACTIVATED from
LAN IP Table
.1.. .... IPNLOCAL X'40' IPNLOCAL LOCAL to this LAN
Segment
..1. .... IPNARPCL X'20' IPNARPCL Soft entry claimed
by ARP reply
...1 .... IPNPROXY X'10' IPNPROXY Set by ARP Add
Address Entry
.... 1... IPNINUSE X'08' IPNINUSE Indicate recent
activity
.... .1.. IPNPERM X'04' IPNPERM Permanent
(SETIP/SETIPM) entry
.... ..1. IPNOWNER X'02' IPNOWNER Owner of VSWITCH
IP address
.... ...1 IPNVALID X'01' IPNVALID Validated on
VSWITCH (if active)
0003 3 Bitstring 1 IPNFLAG1 Additional flags
1... .... IPNARP X'80' IPNARP Entry created by ARP
response
Pointer to associated data device.
0004 4 Address 4 IPNLINK Pointer to NIDBK (data device)
Linkage for Device IP Table chain.
0008 8 Address 4 IPNFPNT Host logical address of next
Device IPNBK
000C 12 Address 4 IPNBPNT Host logical address of previous
Device IPNBK
Linkage for LANBK IP Table chain.
0010 16 Address 4 IPNXFPNT Host logical address of next LAN
IPNBK
0014 20 Address 4 IPNXBPNT Host logical address of previous
LAN IPNBK
Timestamp when this IP Address was installed.
0018 24 Bitstring 8 IPNTOD TOD Clock created/refreshed
Usage counter.
Count references to this entry for comparison against
other entries in the LAN table. Entries with higher
usage counts should be moved toward the front of the
list.
0020 32 Signed 4 IPNUSAGE Count references to this entry
Operating System ID may be used to validate IP Takeover.
0024 36 Bitstring 2 IPN_OSID OS ID (from SETIP interface)
SETIP netmask field is converted to a bit count here.
0026 38 Bitstring 2 IPNMSKNN Netmask bits (from SETIP)
IPNARPFL represents SETIP Flag byte 3 (see HCPIPABK).
0028 40 Bitstring 1 IPNARPFL SETIP ARP flag byte 3
.... ..1. IPNNFAIL X'02' IPNNFAIL Takeover this IP
address from the current owner.
Ignore prior ownership claims.
SETIP ARP Flag x'00000002' (Do not fail Grat ARP).
CP: IPAIPNRP
TCPIP: ArpIpTakeOver.
OSA-E: Register this IP address even if it is in
use on this adapter (No E005 error).
Grat ARP from any other host is ignored
(No E00A error).
Notes : HiperSockets requires matching OSID to
use this option. If the new SETIP and
original SETIP do not use the same OSID,
the new SETIP fails with code E005 (in
use on this adapter).
ArpVipa x'00000001'
CP: IPAIPRPL
TCPIP: ArpVipa.
OSA-E: Register this IP address without sending
a Gratuitous ARP on the network.
If this IP address is in use on the same
adapter, SETIP fails with code E005.
If this IP address is in use on the same
network, SETIP fails with code E00A.
Notes : CP Simulation for HiperSockets treats
all virtual NIC coupled to the same LAN
as part of the same adapter, so SETIP
fails with code E005 no matter which
device registered the address.
.... ...1 IPNNARP X'01' DO NOT Grat ARP this
address.
0029 41 Bitstring 7 * Reserved
ARP Cache Table would contain these fields.
0030 48 Bitstring 1 IPNPATYP ARP Physical Address Type
00000001 IPNPALAN 1 IPNPALAN - LAN address type ==
MAC
0031 49 Bitstring 1 IPNIATYP ARP Internet Address Type
00000001 IPNIAV4 1 IPNIAV4 - ARP IPv4 address type
00000002 IPNIAV6 2 IPNIAV6 - ARP IPv6 address type
0032 50 Bitstring 6 IPNMACAD MAC Address
0038 56 Bitstring 16 IPNADDR (0) IP Address (in ARP cache)
0038 56 Bitstring 16 IPNIPAV6 (0) IPv6 address (128-bits)
0038 56 Bitstring 12 IPNIPXV4 IPv4 pad bytes (null)
0044 68 Bitstring 4 IPNIPAV4 IPv4 address (32-bits)
0038 56 Bitstring 4 IPNRXID (0) Router ID (VLAN||ver||type)
0038 56 Signed 2 IPNRXLAN Router VLAN ID
003A 58 Bitstring 1 IPNRXVER Router IP Version (IPv4/IPv6)
003B 59 Bitstring 1 IPNRXTYP Router Type (unicast/multicast)
00000001 IPNRXPRI 1 IPNRXPRI - Primary router
00000002 IPNRXSEC 2 IPNRXSEC - Secondary router
00000003 IPNRXMCR 3 IPNRXMCR - Multicast router
003C 60 Bitstring 1 IPNRXFLG - Global router flag
.... .... IPNRXVLR 0 IPNRXVLR - vlan router
.... ...1 IPNRXGLR 1 IPNRXGLR - global router
003D 61 Bitstring 11 * Reserved
End of the IPNBK.
0048 72 Dbl-Word 8 IPN$END (0) End of the IPNBK structure
00000048 IPNBKLN *-IPNBK Length of IPNBK in bytes
00000009 IPNBKSZ (*-IPNBK+7)/8 Size of IPNBK in
doublewords
IP Multicast Address (IPM) indicator.
When the IP Address byte 0 is in the range of 224-239
(x'E0'-x'EF') it designates an IP Multicast address.
To determine if an IP Address is an IPM Address:
(1) TM byte0,IPNMCON; If cc<3 it is NOT an IPM
(2) TM byte0,IPNMCOFF; If cc>0 it is NOT an IPM
The address must pass BOTH tests to be accepted as
a Multicast IP Address.
1111 .... IPNMCMSK X'F0' IPM Byte 0 - Significant
bits
111. .... IPNMCON X'E0' IPM Byte 0 - These bits are
ON
...1 .... IPNMCOFF X'10' IPM Byte 0 - These bits are
OFF
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