druddle

Anyone got any good web links or info on configuring IPMP in Solaris 8/9 ?

Have used google but was wondering if there is any more out there.

Dave

DrEvil

Does this one help?

FAQ ID Synopsis Date
3212 What are IP Network Multipathing failover and failback? 17 Nov 2000

Description Top

What are IP Network Multipathing failover and failback?
How can we configure and how can we confirm if it is working or not?

NOTE: IP Network Multipathing has been available since Solaris 8 10/00.Solution Summary Top

- What is IP Networking Multipathing Failure Detection (failover)?

Ability to detect when a network adaptor has failed and automatically
switching (failover) the network access to an alternate network.

- What is IP Networking Multipathing Repair Detection (failback)?

Ability to detect when a network adaptor that failed preciously has
been repaired and automatically switching back (failback) the network
access to an alternate network adaptor.

- How can we configure?

There are two ways. One is command line configuration and the other
is using hostname file.

(a) command line

ifconfig <interface1> group <group-name>
ifconfig <interface2> group <group-name>
ifconfig <interface1> addif <test-ip-addr-1> -failover deprecated up
ifconfig <interface2> addif <test-ip-addr-2> -failover deprecated up

(b) hostname file

[/etc/hostname.<interface1>]
<ip-address1> group <group-name> up \
addif <ip-address1-1> -failover deprecated up

[/etc/hostname.<interface2>]
<ip-address2> group <group-name> up \
addif <ip-address2-1> -failover deprecated up

- How can we confirm it it is working or not?

(1) decide IP address and the interface name

Suppose the following IP address assignment.

le0 129.158.70.34, le0:1 129.158.70.82
le1 129.158.70.81, le1:1 129.158.70.83

Suppose the group name is "multipath-test".

(2) configure IP multipathing

# ifconfig le0 group multipath-test
# ifconfig le1 group multipath-test
# ifconfig le0 addif 129.158.70.82 -failover deprecated up
# ifconfig le1 addif 129.158.70.83 -failover deprecated up

(3) confirm the configuration validity

# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv 4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
le0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IP v4> mtu 1500 index 2
inet 129.158.70.34 netmask ffffff00 broadcast 129.158.70.255
groupname multipath-test
ether 8:0:20:1c:0:4f
le0:1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 2
inet 129.158.70.82 netmask ffff0000 broadcast 129.158.255.255
le1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IP v4> mtu 1500 index 3
inet 129.158.70.81 netmask ffffff00 broadcast 129.158.70.255
groupname multipath-test
ether 8:0:20:1c:0:4f
le1:1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 3
inet 129.158.70.83 netmask ffff0000 broadcast 129.158.255.255

(4) create a session

Create telnet session to another host.

(5) see the physical interface utilization

We can confirm only le0 is used from the netstat output.

# netstat -ran | grep UHA
129.158.118.65 -- UHA 3 446 le0
:
:

(6) disable le0

When the network adaptor le0 is out of order, the output of ifconfig
changes as follows. "FAILED" is shown in le0. And le1:2 is replacing
it. It can be enabled by pulling out the network cable.

# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv 4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
le0: flags=19000842<BROADCAST,RUNNING,MULTICAST,IPv4 ,NOFAILOVER,FAILED>
mtu 0 index 2
inet 0.0.0.0 netmask 0
groupname multipath-test
ether 8:0:20:1c:0:4f
le0:1: flags=19040843<UP,BROADCAST,RUNNING,MULTICAST,D EPRECATED,IPv4,
NOFAILOVER,FAILED> mtu 1500 index 2
inet 129.158.70.82 netmask ffff0000 broadcast 129.158.255.255
le1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 3
inet 129.158.70.81 netmask ffffff00 broadcast 129.158.70.255
groupname multipath-test
ether 8:0:20:1c:0:4f
le1:1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 3
inet 129.158.70.83 netmask ffff0000 broadcast 129.158.255.255
le1:2: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IP v4> mtu 1500 index 3
inet 129.158.70.34 netmask ffffff00 broadcast 129.158.70.255

The connection with another host can be maintained by switching to
le1 interface. Actually the communication with another host works.

# netstat -ran | grep UHA
129.158.118.65 -- UHA 2 26 le1
:
:

This is the failover.

(7) repair le0

When the le0 adaptor is repaired, le0 interface works again as follows.
It can be enabled by connecting the network cable again.

# ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv 4> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
le0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IP v4> mtu 1500 index 2
inet 129.158.70.34 netmask ffffff00 broadcast 129.158.70.255
groupname multipath-test
ether 8:0:20:1c:0:4f
le0:1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 2
inet 129.158.70.82 netmask ffff0000 broadcast 129.158.255.255
le1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 3
inet 129.158.70.81 netmask ffffff00 broadcast 129.158.70.255
groupname multipath-test
ether 8:0:20:1c:0:4f
le1:1: flags=9040843<UP,BROADCAST,RUNNING,MULTICAST,DE PRECATED,IPv4,
NOFAILOVER> mtu 1500 index 3

This is the failback.Date Approved 11/17/00

DrEvil

We don't use it, because new technology scares us here!
(read, I'm not allowed to)

druddle

Thanks Alex, currently helping to set up a bucket load of Primepowers in Germany and that has really helped.

Must find my Sunsolve password.......

DrEvil

No worries mate.

krankyd

Primepowers.

Germany.

When are you gonna come over to the light from the dark side

I'm in dusseldorf at the moment upgrading 6800's... at 7:45 pm.
By myself.
In a server room.
with only a laptop to surf with

druddle

Lol dave - i am with a big UK tv company that has kicked out the other type of Solaris systems and bought Primepower

Server room, laptop, Scoobynet. What more do I need !!!

Dave

DrEvil

Which one do you want??

http://sunsolve.sun.co.uk/

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Let me know mate.

[Edited by DrEvil - 2/11/2003 11:31:24 AM]