Abbreviated migration scenarios

Abbreviated migration scenarios

This section gives some abbreviated scenarios for when you are thinking of installing WebSphere MQ V6.0.

Abbreviated scenarios: Effects of CONNAME and LOCLADDR settings

The following table provides an overview of what will occur for the different TCP/IP stacks (IPv4 only, IPv6 only and dual IPv4 and IPv6 stacks) and given the settings for CONNAME and LOCLADDR the expected connection result.
Using mapped addresses can require protocol translators in the IP network.

Effects of CONNAME and LOCLADDR settings
Stack Type CONNAME setting LOCLADDR setting Connection result
IPv4 only stack IPv4 address Channel binds to IPv4 stack
IPv6 address Channel fails to resolve CONNAME
Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv4 stack
IPv4 address IPv4 address Channel binds to IPv4 stack
IPv6 address IPv4 address Channel fails to resolve CONNAME
Host name resolves to both IPv4 and IPv6 addresses IPv4 address Channel binds to IPv4 stack
Any address IPv6 address Channel fails to resolve LOCLADDR
IPv4 address Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv4 stack
IPv6 address Host name resolves to both IPv4 and IPv6 addresses Channel fails to resolve CONNAME
Host name resolves to both IPv4 and IPv6 addresses Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv4 stack

Dual IPv4 and IPv6 stack IPv4 address Channel binds to IPv4 stack
IPv6 address Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses Channel binds to stack determined by IPADDRV
IPv4 address IPv4 address Channel binds to IPv4 stack
IPv6 address IPv4 address Channel fails to resolve CONNAME
Host name resolves to both IPv4 and IPv6 addresses IPv4 address Channel binds to IPv4 stack
IPv4 address IPv6 address Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
IPv6 address IPv6 address Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses IPv6 address Channel binds to IPv6 stack
IPv4 address Host name resolves to both IPv4 and IPv6 addresses Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
IPv6 address Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv6 stack

IPv6 only stack IPv4 address Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
IPv6 address Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv6 stack
Any address IPv4 address Channel fails to resolve LOCLADDR
IPv4 address IPv6 address Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
IPv6 address IPv6 address Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses IPv6 address Channel binds to IPv6 stack
IPv4 address Host name resolves to both IPv4 and IPv6 addresses Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
IPv6 address Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv6 stack
Host name resolves to both IPv4 and IPv6 addresses Host name resolves to both IPv4 and IPv6 addresses Channel binds to IPv6 stack

Abbreviated scenarios: System configurations

Table 3 gives a number of abbreviated scenarios based on the configuration of the installed queue managers and the IP configuration they are running on. The list is not intended to be exhaustive, but to give a number of examples of what to expect based on the configurations shown.
The following table lists the abbreviations used in Table 3. The abbreviations in this table are combined in Table 3 to give the configuration of the systems involved in trying to establish communication. For example:

v53 + IPv6: Represents a WebSphere MQ V5.3 or earlier queue manager on a system with a TCP/IP version 6 stack
v6 + Dual: Represents a WebSphere MQ V6.0 queue manager on system with a dual TCP/IP version 4 and version 6 stack

Abbreviations used in system configurations
Abbreviation Meaning
v53 a WebSphere MQ V5.3 or earlier queue manager
v6 WebSphere MQ V6.0 queue manager

IPv4 a system using an IPv4 only stack
IPv6 a system using an IPv6 only stack
Dual a system using both an IPv4 and an IPv6 stack

IPv4DNS DNS returns an IPv4 address only for hostname of system holding the responding queue manager
IPv6DNS DNS returns an IPv6 address only for hostname of system holding the responding queue manager
DualDNS DNS returns an IPv4 and IPv6 address for hostname of system holding the responding queue manager

LOCLADDR4 The LOCLADDR parameter is set to IPv4 addressing
LOCLADDR6 The LOCLADDR parameter is set to IPv6 addressing

IPADDR4 IPADDRV is set to IPv4 addressing
IPADDR6 IPADDRV is set to IPv6 addressing

System configurations
Originating queue manager Responding queue manager Result
Queue manager and Stack LOCLADDR IPADDRV Queue Manager and Stack DNS Return

v53 + IPv6

Any

Not applicable

IP Error

v53 + IPv4 or
v53 + Dual

Both
LOCLADDR4
&
LOCLADDR6

Not applicable

v53 + IPv4 or
v53 + Dual

IPv4DNS or
DualDNS

IPv4 connection can be
established

v53 + IPv4 or
v53 + Dual

Blank or
LOCLADDR4

Not applicable

v53 + IPv4 or
v53 + Dual

IPv4DNS or
DualDNS

IPv4 connection can be
established

v53 + IPv4 or
v53 + Dual

Blank or
LOCLADDR4

Not applicable

v53 + Dual

IPv6DNS

Unable to resolve
CONNAME

v53 + IPv4 or
v53 + Dual

Blank or
LOCLADDR4

Not applicable

v53 + Dual or
v6 + Dual
v6 + IPv4

IPv4DNS or
DualDNS

IPv4 connection can be
established

v53 + IPv4 or
v53 + Dual

LOCLADDR6

Not applicable

IP Error

v53 + IPv4 or
v53 + Dual

Blank or
LOCLADDR4
or both
LOCLADDR4
&
LOCLADDR6

Not applicable

v6 + IPv6

IPv6DNS

Unable to resolve
CONNAME

v6 + IPv4

Blank or
LOCLADDR4

Not specified

v53 + IPv4 or
v53 + Dual or
v6 + IPv4

IPv4DNS or
DualDNS

IPv4 connection can be
established

v6 + IPv4

LOCADD6

Not specified

Unable to resolve
LOCLADDR

v6 + IPv4

Blank or
LOCLADDR4

Not specified

v6 + IPv6

IPv6DNS

Unable to resolve
CONNAME

v6 + IPv6

Blank or
LOCLADDR6

Not specified

v53 + Dual

DualDNS

Attempts to start IPv6
channel and fails as there
will be no IPv6 listener
available

v6 + IPv6

Blank or
LOCLADDR6

Not specified

v53 + IPv4

IPv4DNS

Attempts to start IPv6
channel and fails as there
will be no IPv6 listener
available

v6 + IPv6 or
v6 + Dual

LOCLADDR6

Blank or
IPADDR6

v6 + IPv6 or
v6 + Dual

IPv6DNS or
DualDNS

IPv6 connection can be
established

v6 + Dual

LOCLADDR6

IPADDR4

v6 + Dual

IPv4DNS or
DualDNS

IPv6 connection can be
established where
mapped addressing can
be used

v6 + Dual

Blank or
LOCLADDR4

IPADDR4

v53 + Dual

IPv4DNS or
DualDNS

IPv4 connection can be
established

v6 + Dual

Both
LOCLADDR4
&
LOCLADDR6

Blank or
IPADDR4

v53 + Dual

IPv4DNS or
DualDNS

IPv4 connection can be
established

v6 + Dual

LOCLADDR4

IPADDR4

Unable to resolve
LOCLADDR

v6 + Dual

LOCLADDR6
or both
LOCLADDR4
&
LOCLADDR6

Blank or
IPADDR6

v6 + IPv6 or
v6 + Dual

IPv6DNS or
DualDNS

IPv6 connection can be
established

Parent topic:
Internet Protocol V6 (IPv6) migration

mi10230_

Stack Type	CONNAME setting	LOCLADDR setting	Connection result
IPv4 only stack	IPv4 address		Channel binds to IPv4 stack
	IPv6 address		Channel fails to resolve CONNAME
	Host name resolves to both IPv4 and IPv6 addresses		Channel binds to IPv4 stack
	IPv4 address	IPv4 address	Channel binds to IPv4 stack
	IPv6 address	IPv4 address	Channel fails to resolve CONNAME
	Host name resolves to both IPv4 and IPv6 addresses	IPv4 address	Channel binds to IPv4 stack
	Any address	IPv6 address	Channel fails to resolve LOCLADDR
	IPv4 address	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv4 stack
	IPv6 address	Host name resolves to both IPv4 and IPv6 addresses	Channel fails to resolve CONNAME
	Host name resolves to both IPv4 and IPv6 addresses	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv4 stack

Dual IPv4 and IPv6 stack	IPv4 address		Channel binds to IPv4 stack
	IPv6 address		Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses		Channel binds to stack determined by IPADDRV
	IPv4 address	IPv4 address	Channel binds to IPv4 stack
	IPv6 address	IPv4 address	Channel fails to resolve CONNAME
	Host name resolves to both IPv4 and IPv6 addresses	IPv4 address	Channel binds to IPv4 stack
	IPv4 address	IPv6 address	Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
	IPv6 address	IPv6 address	Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses	IPv6 address	Channel binds to IPv6 stack
	IPv4 address	Host name resolves to both IPv4 and IPv6 addresses	Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
	IPv6 address	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv6 stack

IPv6 only stack	IPv4 address		Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
	IPv6 address		Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses		Channel binds to IPv6 stack
	Any address	IPv4 address	Channel fails to resolve LOCLADDR
	IPv4 address	IPv6 address	Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
	IPv6 address	IPv6 address	Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses	IPv6 address	Channel binds to IPv6 stack
	IPv4 address	Host name resolves to both IPv4 and IPv6 addresses	Maps an IPv4 CONNAME to an IPv4 mapped IPv6 address. IPv6 implementations that do not support IPv4 mapped IPv6 addressing fail to resolve CONNAME
	IPv6 address	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv6 stack
	Host name resolves to both IPv4 and IPv6 addresses	Host name resolves to both IPv4 and IPv6 addresses	Channel binds to IPv6 stack

Abbreviation	Meaning
v53	a WebSphere MQ V5.3 or earlier queue manager
v6	WebSphere MQ V6.0 queue manager

IPv4	a system using an IPv4 only stack
IPv6	a system using an IPv6 only stack
Dual	a system using both an IPv4 and an IPv6 stack

IPv4DNS	DNS returns an IPv4 address only for hostname of system holding the responding queue manager
IPv6DNS	DNS returns an IPv6 address only for hostname of system holding the responding queue manager
DualDNS	DNS returns an IPv4 and IPv6 address for hostname of system holding the responding queue manager

LOCLADDR4	The LOCLADDR parameter is set to IPv4 addressing
LOCLADDR6	The LOCLADDR parameter is set to IPv6 addressing

IPADDR4	IPADDRV is set to IPv4 addressing
IPADDR6	IPADDRV is set to IPv6 addressing

Originating queue manager		Responding queue manager			Result
Queue manager and Stack	LOCLADDR	IPADDRV	Queue Manager and Stack	DNS Return
v53 + IPv6	Any	Not applicable			IP Error
v53 + IPv4 or v53 + Dual	Both LOCLADDR4 & LOCLADDR6	Not applicable	v53 + IPv4 or v53 + Dual	IPv4DNS or DualDNS	IPv4 connection can be established
v53 + IPv4 or v53 + Dual	Blank or LOCLADDR4	Not applicable	v53 + IPv4 or v53 + Dual	IPv4DNS or DualDNS	IPv4 connection can be established
v53 + IPv4 or v53 + Dual	Blank or LOCLADDR4	Not applicable	v53 + Dual	IPv6DNS	Unable to resolve CONNAME
v53 + IPv4 or v53 + Dual	Blank or LOCLADDR4	Not applicable	v53 + Dual or v6 + Dual v6 + IPv4	IPv4DNS or DualDNS	IPv4 connection can be established
v53 + IPv4 or v53 + Dual	LOCLADDR6	Not applicable			IP Error
v53 + IPv4 or v53 + Dual	Blank or LOCLADDR4 or both LOCLADDR4 & LOCLADDR6	Not applicable	v6 + IPv6	IPv6DNS	Unable to resolve CONNAME

v6 + IPv4	Blank or LOCLADDR4	Not specified	v53 + IPv4 or v53 + Dual or v6 + IPv4	IPv4DNS or DualDNS	IPv4 connection can be established
v6 + IPv4	LOCADD6	Not specified			Unable to resolve LOCLADDR
v6 + IPv4	Blank or LOCLADDR4	Not specified	v6 + IPv6	IPv6DNS	Unable to resolve CONNAME
v6 + IPv6	Blank or LOCLADDR6	Not specified	v53 + Dual	DualDNS	Attempts to start IPv6 channel and fails as there will be no IPv6 listener available
v6 + IPv6	Blank or LOCLADDR6	Not specified	v53 + IPv4	IPv4DNS	Attempts to start IPv6 channel and fails as there will be no IPv6 listener available
v6 + IPv6 or v6 + Dual	LOCLADDR6	Blank or IPADDR6	v6 + IPv6 or v6 + Dual	IPv6DNS or DualDNS	IPv6 connection can be established
v6 + Dual	LOCLADDR6	IPADDR4	v6 + Dual	IPv4DNS or DualDNS	IPv6 connection can be established where mapped addressing can be used
v6 + Dual	Blank or LOCLADDR4	IPADDR4	v53 + Dual	IPv4DNS or DualDNS	IPv4 connection can be established
v6 + Dual	Both LOCLADDR4 & LOCLADDR6	Blank or IPADDR4	v53 + Dual	IPv4DNS or DualDNS	IPv4 connection can be established
v6 + Dual	LOCLADDR4	IPADDR4			Unable to resolve LOCLADDR
v6 + Dual	LOCLADDR6 or both LOCLADDR4 & LOCLADDR6	Blank or IPADDR6	v6 + IPv6 or v6 + Dual	IPv6DNS or DualDNS	IPv6 connection can be established