Sponsored Content
Operating Systems Solaris Solaris IP Multipathing (IPMP) Help Post 302153889 by prowla on Thursday 27th of December 2007 05:01:50 AM
Old 12-27-2007
IPMP is great, but beware that the "resilience" it offers can be an illusion.
  • If you have a system with a quad ether (eg. qfe) card, then you don't get much resilience by using IPMP on two ports in the same card. You do get protection against accidentally pulling out a single LAN cable, but you are still susceptible to failure of that card, and to an accident involving both cables.
  • If your LAN cables run to the same patch panel, then you are susceptible to any problems with that.
  • If your cables attach to the same network switch, then you are dependent upon that.
  • If your cables all go to the back of the cabinet, then you are susceptible to an accident there. (Some systems have card cages at the front and back of the machine, to allow completely independent routing of the cables.)
  • Etc, all the way along the chain.

Oh, and if you're doing it for LAN interfaces, then you need to do the same for disks (SCSI and/or FC), and mains cables too!
Basically you have to sonsider your whole environment and eliminate and SPOFs (Single Points Of Failure).

Welcome to the world of managing datacentre computers!Smilie
 

10 More Discussions You Might Find Interesting

1. IP Networking

Quick Poll: Solaris IP Multipathing

I've setup Solaris IP Multipathing under Solaris whenever the hardware to do so was available. I find it amazing though that so few places I've worked at don't use it until I arrive. I wanted to find out if I'm running into all the exceptions, or is it really not being used? ... (3 Replies)
Discussion started by: kduffin
3 Replies

2. Solaris

solaris multipathing

I have solaris 10 sparc. I installed a Qlogic hba card. This card is connected on a brocade switch and the brocade is connected on 2 different controllers on a Hitachi disk bay. I formated 2 luns. On my solaris system, i have 4 disk. How to configure solaris 10 to fix the dual disk view. ... (4 Replies)
Discussion started by: simquest
4 Replies

3. Solaris

Solaris IP Multipathing

Hi, I saw your post on the forums about how to setup IP multipathing. I wanted your help on the below situation . I have 2 servers A and B . Now they should be connected to 2 network switches . S1 and S2. Now is it possible to have IP Multipathing on each of the servers as follows ? ... (0 Replies)
Discussion started by: maadhuu
0 Replies

4. Solaris

Disable Inbuilt multipathing software of Solaris 10

Dear UNIX Gurus I need to know how to disable MPXIO feature (Inbuilt multipathing software of Solaris 10) as we are going to implemented iSCSI EMC based SAN. I am bit new to this feature so kindly suggest how to disable it Regards (4 Replies)
Discussion started by: girish.batra
4 Replies

5. Solaris

how to configure IPMP in solaris 9

Hi friends , can anyone provide me the complete steps to configure IPMP in solaris 9 or 10 provided i have two NIC card ? regards jagan (4 Replies)
Discussion started by: jaganblore
4 Replies

6. Solaris

Solaris multipathing

Hai we using emc storage which is conneted to M5000 through san switch. we asign 13 luns but in server it is showing 22 luns. i enable the solaris multipathing (MPxIO) #more /kernel/drv/fp.conf in that file MPxio-disable=no #mpathadm list lu it shows ... (2 Replies)
Discussion started by: joshmani
2 Replies

7. Solaris

Solaris IPMP

Can any one please explain me the concept behind IPMP in solaris clustering.Basic explanation would be really appreciated... Thanks in Advance vks (2 Replies)
Discussion started by: vks47
2 Replies

8. Solaris

ZeusIOPS multipathing failed Solaris 11

hi, just installed solaris 11.1 (11.1.9.5.1) on a sun7410 ZFSSA (x4440 + j4400), but when I enable multipathing with "stmsboot -e", only the 1TB SATA drives inside the j4400 are configured as multipathed vhci / mpxio devices, but the logzillas / ZeusIOPS drives are skipped. the server is... (0 Replies)
Discussion started by: pressy
0 Replies

9. Solaris

IPMP over aggregate in Solaris 11

hi all, i start with solaris 11 and i am disapointed by the change on ip managing. i want to set a ipmp over tow aggregate but i dont find any doc and i am lost with the new commande switch1 net0 aggregate1 | net1 aggregate1 |-----| |... (1 Reply)
Discussion started by: sylvain
1 Replies

10. Solaris

Solaris 10 IPMP - failback=no

Hi all, Just a few questions -> Is an "OFFLINE" interface going back to "ONLINE" consider as a failback by IPMP ? I have "FAILBACK=no" in my /etc/default/mpathd; however when i do the following (igb0 and igb7 are in the same ipmp link based group) q1) why does "if_mpadm -r igb7" cause... (0 Replies)
Discussion started by: javanoob
0 Replies
KNIFE(8)						      System Manager's Manual							  KNIFE(8)

NAME
knife, axe, cutter, chainsaw - tools to improve network performance via SNIP SYNOPSIS
knife is used to control the network via Sysadmin Network Interrupt Protocol [SNIP]. DESCRIPTION
Experience has shown that suitable application of these tools on the network can lead to improved network performance, as busy segments of useless traffic can be isolated from the important stuff (and the rest of the world, for that matter). However, care must be taken, other- wise lusers will be complaining about "network downtime". knife vs LART While knife can be used as a replacement for LART, the reverse is not generally true; while blunt trauma works wonders on lusers, it tends to be ineffective on cables. Also, note that using knife or one of it's associates as a LART will probably lead to higher level assault charges than one would get with a standard LART. chainsaw, the power SNIP tool chainsaw is a version of knife that makes quick work of almost any problem. It also has a correspondingly higher potential for causing unintentional damage. Handle with care. FILES
In its normal application to cables, knife uses no files. If applied to a disk, many files may be affected; see mkfs(8). SEE ALSO
lart(8) BUGS
You may be required to fix things eventually. RESTRICTIONS
Bosses and the legal system may take a dim view of overenthusiastic application of these tools. AUTHOR
While the origin of the first knife remains a mystery, this man page was written by Kurt Hockenbury <kurt@something.com>. He disclaims responsibility for any actions inspired by this man page. HISTORY
SNIP was first described on alt.sysadmin.recovery by J.D. Falk <jdfalk@cais.cais.com> as a followup to a post by <martin@angela.ctrl- c.liu.se>. KNIFE(8)
All times are GMT -4. The time now is 09:10 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy