Different mtu's in dlpi driver

Hi,
I have a dlpi ethernet-ish driver which I want to support multiple interfaces, which can each have a different mtu depending on the media interface type.
Normally , the mtu is specified in the infoack structure, supplied by the xxxireq() routine in the driver. My problem is that the stream pointer obtained from the queue passed in e.g.
slp = (struct xxxxstr *)wq->q_ptr;
is not always linked to a device e.g.
slp or slp->xxxxp is null.
So I can't tell which interface is to be used, and therefore which mtu to specify.
Any ideas? Can this be done, or do I have to create two separate driver?
Many thanks,
S.

Did you ever figure this out? I am in the same situation and cannot figure out how to refer to specific ports on the same motherboard.
https://wiki.archlinux.org/index.php/Pu … ont.2Frear looks promising. However I forget whether one of my cords is plugged in to the rear jack or the center jack, and moving my desktop to look is a little involved. Oh well, next time the need arises I will experiment further.
Last edited by rosshadden (2014-03-06 03:22:47)

Similar Messages

Configuring mtu in a DLPI driver

Hi,
I have a comms driver based on the sample solaris ethernet drivers. It supports a number of card types, and I would like to be able to configure different initial MTUs.
(Note: i understand that i can set a global MTU, and use ifconfig to adjust individual interface MTUs down later, but i don't really want to do that because users would have to script this rather than just using the driver.conf.)
It appears that using DLPI style 2, when you get the first DL_INFO_REQ you generally haven't yet been attached to a device (PPA), so you don't know what has been configured for that instance.
Is there any way to fix this? Would using dlpi style 1 work, given that you attach a stream directly to a device instance at open time? Would the INFO_REQ come after the open? (If so, do you have any code samples which work this way?)
Many thanks
S.

The machine appears to already be configured but I assume that it is configured incorrectly for your environment. If you're moving to a totally different environment (where everything is likely to be wrong), probably the easiest approach is to run sys-unconfig and answer the questions which pop up after rebooting the system. The sys-unconfig command causes Solaris to forget its configuration and prompt you for configuration information on the next reboot. It should know about the le0 interface so you don't have to worry about it. You will be asked to enter things like the machine name, IP addresss, subnet information, name service information, default router, time zone, root password, etc. so you should have that information at hand.
The sys-unconfig command does tweak a lot of files. If you can, it would be a good idea to back up the system before running this just in case something goes amiss. I've not had problems with it but just in case...

Anyconnect fails to connect with a message that it tried to set a specific MTU but it was already enabled with a different MTU - (SOLVED)

Cisco Anyconnect 3.1.05160 fails to setup the VPN tunnel, it prompts with this message:
"The VPN client driver encountered an error. Please restart your computer or device, then try again."
Authentication and everything seems to go through but it won't work.
The computer is a brand new HP with Windows 7. I have treid first with some later 2.x Anyconnect with same result.
The follow entries are printed in the event log:
Level Date and Time Source Event ID Task Category
Error 2014-05-10 16:19:28 acvpnagent 2009 None Termination reason code 13:
Unable to start VA, setup shared queue, or VA gave up on shared queue.
Error 2014-05-10 16:19:28 acvpnagent 2 Engineering Debug Details Function: CVpnMgr::main
File: .\VpnMgr.cpp
Line: 1847
Invoked Function: IHostMgr::enableHostMgr
Return Code: -23592949 (0xFE98000B)
Description: HOSTMGR_ERROR_ALREADY_ENABLED_WITH_DIFFERENT_MTU:An attempt was made to enable the tunnel's network interface with a specific MTU but it was already enabled with a different MTU.

This was caused by the good old HP mess-up-your-computer services.
Disable the service "HP Device Locking / Auditing" and the VPN will be able to connect.

I have over 200 hours of HD video on 5 different TB Thunderbolt GRaid hard drives. I need to reorganize my projects, moving large files from one drive to another. Advice?

I have over 200 hours of HD video on 5 different TB Thunderbolt GRaid hard drives. I need to reorganize my projects, moving large files from one drive to another. Advice?

Do some testing to get your method working right with some less than important footage.
Copy/paste files where you want then.
Use the FCE Reconnect feature to tell FCE where the newly copied files reside.
Make sure the new location and files are working as expected with your Projects.
Delete the original files if no longer required.
Al

I have copied my music library from two different files from extewrnal hard drive into the Itunes folder. I tunes only recognizes some of the songs. I have reloaded 5 times and can't get intunes to recognize all my songs? HELP!

I have copied my music library from two different files from extewrnal hard drive into the Itunes folder. I tunes only recognizes some of the songs. I have reloaded 5 times and can't get intunes to recognize all my songs? HELP!

" When I did this, my library showed all the music I have "purchased" from itunes but did not have the music that I downloaded a long time ago through itunes from my old CDs."
Correct.
" How can I get that music to show up in my library now on my new computer? "
Copy it from your old computer or your backup copy of your old computer.
The sync is one way - computer to ipod.

Can I move my operating system to a different partition on the same drive?

I thought I knew what I was doing when I partitioned my hard drive and installed the operating system and everything else. The other partitions are for documents, photos, etc. It worked well for quite a while but now I find there is not enough free space on my start-up partition (24GB) to be able to do new installations. I have cleared a 50 GB partition on the same drive to be the new home of my operating system. I tried copying all the files in the System partition to the new drive but "Startup Disk" doesn't recognize the copied version. How can I make this work without having to install everything all over again?

Too true. I have been partitioning my drives since the 80's when it was "illegal" and voided warranties as was opening the case on a Mac. Now the cases open right up and you drop and slide in new drives and memory. And it has saved my butt many many many times. You put your operating system on one partition, from what I have read it is best on the first partition of the first hard drive in the chain, Master, if you have more than one drive. I have four drives with now down to 8 partitions with the last two 10.4.x OS's that worked well and my last 10.5 for emergency use, all on one drive in separate partitions and boot to them all the time with no problems. I always keep my last install just in case intact and bootable. It's no different than what is done with BootCamp and running Windows. Then put all your data, files, non-Apple applications on another partition(s). That way when the OS hammers, and it will, all you have to recover is the OS and your data is safe. Thenall you really have to worry about is certain preferences and databases that have to be on the start up partition that won't work when aliased. I have found them, and they are few, and use Backup from the iDisk software library to back these files up to my iDisk nightly. And having the OS all by itself makes back ups so much easier and smaller. But you have to leave Apple applications on the OS partition in the Applications or Utilities folder or the Apple Updater will not see them.
Before iTunes and iPhoto would allow you to link to databases that are not on the start up partition, I was aliasing those files from other partitions. Then early 10.5 it didn't work as well, now when you hold the option key prior to starting up in iTunes and iPhoto you'll get a window to go find or create any of many databases to run off of. I have done this for years with Apple, Microsoft, Macromedia, Adobe and many other applications.
So far my largest OS has been 14.6GB after I installed GarageBand and it loaded a ton of instruments on to the OS partition. I have been through this before and found them and moved them off to another partition and aliased them back and GB works great. Otherwise, even in 10.5.x you can have relatively smaller partitions. And yes you want room to grow, if even just scratch disc space that some applications will not let you choose or go off the OS partition. So I hover around 25-30GB partitions and have never gotten close to getting more that 60% full, fulfilling the 10-15% free space axiom that seems to get larger with every update. I have read here that several people that had taken their machines to an Apple where they replaced drives saying that the techs partitioned the drives and said that the minimum for 10.5.x was 12GB. As the updates flow, that will vary probably up. Plus Apple has some bloated applications and a ton of things that you'll never need or use that take up room that are a pain to find, like unnecessary fonts. A little extra space is always good.
I use CarbonCopyCloner to make compressed back ups and bootable clones. The older versions would not copy files that would be easily rebuilt when you booted that OS, thus cleaning up the clone/back up by cleaning/omitting files that normally get damaged. Not sure if that is part of the latest versions. I think they copy everything. Another great thing is that Apple installers and Disk Utility and can use them to restore or migrate from. Because of CCC, I now have it down to 10-15 to restore a crashed or failing OS from parts. I have yet to loose anything, except time in having to deal with an OS that sometimes has a mind of its own.
As you play around as I did when I was waiting for an Apple Tech Rep, and reran the Combo Updater back over a wonky install, to find out if you could do that, it was done and worked great just as he returned and said no one there knew. I told him that I did and it worked great. We kept in touch for a couple of months to see if anything weird happened, which it didn't, and now it is suggested and common practice. Just as the Tech's and I whispered under our breath in the 90's about partitioning. Now they suggest it and Apple will talk to those that have partitioned. As you see needs and experiment you'll learn (trial by fire) and all this will become second nature. So don't think this is too much and go for it. Just make sure before you are completely comfortable, have another drive, I use 25GB Rewritable Blu-ray Discs, to do regular normal, CCC, back ups until you get the hang of it. This method yields 6-8GB compressed archives. Then you'll have a place for your stored back ups and whatnot. I was keeping up to 5 iterations, i.e.: 10.5.1a, b, c, d and e. Once my paranoia subsided I pared it down to two since I could easily recover the small amount that I have to now from small back ups that are mostly aliases relinking files that are safe on other partitions.
So yes you can put/clone the OS to another partition. Just make sure you cover your bases, use an application made for cloning/backing up (CCC) and label your installs as not to have the same name on two OS's or you'll have a bit of a problem off the top remembering which is which. I'm on 10.5.5C2.
Good Luck and Happy Partitioning.

PSE7 Restore to different PC fails to update drive letter in catalog

I'm trying to simply copy my catalog and photos from my desktop to my laptop to have with me when I'm away. From all the discussions it seemed like backup/restore was the best method in order to preserve all the tags and other data associated with the images.
Source Drive:
Volume in drive H: is Data
Volume Serial Number is 30AF-58D3
Catalog: RH Main
Picture Folder: h:\My Documents\My Pictures
Catalog Folder: h:\My Documents\Adobe\Photoshop Elements\RH Main
Backup Destination:
Volume in drive M is OneTouch4 1-TB Serial number is e79a:bf54
Now on the laptop I run the restore and choose 'Hard drive/Other Volume' and locate the Tally file on drive X: which is mapped to drive M on my desktop. It was simpler to restore across the network rather than moving drive M to the laptop.
Under 'Restore Files and Catalogs to' I choose 'New Location', specify D:\, and check 'Restore Original Folder Structure'.
On the laptop:
Volume in drive D: is Apps_Data
Volume Serial Number is 3069-7A44
After the restore is complete, all of my photos are exactly where I expect them, D:\My Documents\My Pictures. The catalog is in D:\Catalog.
The problem is that there are no thumbnails displayed for any of the photos. Examining the properties of each reveals that they are presumed to be on drive H: - their original location on my desktop.
I could have easily copied the files myself, but I was counting on restore to do what I could not easily do - which was to update the database to reflect the correct location of the restored files. After all, restore PUT them there. Something must have convinced it that the drive letter containing the restored photos was still H:, but I'm at a loss as to how it could have come to that conclusion.
Am I missing a step or am I expecting too much from backup/restore?

The only drive visible to the laptop is X: which is mapped to M: on the desktop - the destination for the backup. The drive containing the original images on the desktop is H:.
Automatically search and reconnect is checked.
Update thumbnail doesn't work. Here's what's funny. Take a single example, a file named DSC_0005.JPG. I choose update and it starts scanning on D: and I can see it run through My Documents, My Pictures, and all of its subfolders. It turns out there are no less than 10 occurrences of that file name under My Pictures - each of them in a different sub-folder of course. So I let Update Thumbnail run and ended up at the reconnect screen where I can go find it manually. Why it didn't find any of those 10 files is a mystery. So I reconnected manually by browsing to the correct DSC_0005.JPG file - formerly at H:\My Documents\My Pictures\2009 01 01 but now on D: at the same path.
Next I choose the thumbnail adjacent to it on the screen, DSC_0006.JPG. I check the rmf.3.cache file and the only entry in it is the folder that I just matched DSC_0005.JPG from - which is the same folder that contains DSC_0006.JPG. The process again runs for quite some time searching C: & D: for DSC_0006.JPG. Once again I'm presented with the Reconnect Missing Files dialog with no file suggested on the right side. So even with an entry in the cache pointing to D:\My Documents\My Pictures\2009 01 01, a folder containing a file named DSC_0006.JPG, it could not find a match!
Back in PSE5 I had performed this reconnect on one file and then again on the rest as described on your web page and it worked as you described. So I'm familiar with that process but have not needed it lately, until now.
The backup/restore functionality is so basic that I'm sure they tested it to some degree and it must work for some, otherwise many others would likely be griping. So there must be something unique to my setup that it's unable to come to grips with. Surely their internal testing of the restore feature included a test to restore to a different drive.
Maybe they made the restore too smart. It certainly restores the file to the correct location based on the options I selected and the file retains its original name - but the database thinks it hasn't moved from the original location.

2 different brand USB external hard drives not mounting- Firewire ok

Hi, first timer here so apologies in advance.
i have to different brand external hard disks and they both show up fine with a firewire connection. the trouble is that i need to use the usb connection and neither show up. (shows up in system profiler though but not disk utility.) why USB if i can use Firewire? I will be using the disk to connect to a Wii console via usb port and the Wii is not recognizing either disk either?
Any ideas on how to get one of these disks to mount by USB?
cables are fine as work with USB only hard disks.
Thanks in advance

Hello Bob,
Thanks for your reply.
Unfortunately it does not show up at all in "disk utility". But appears in System Profiler under USB. This is true of 2 different external hard drives that mount fine with the firewire cables. One is a 3.5 inch and the other is a 2.5 inch portable. The USB cable is not faulty as tested it with another USB peripheral. Now a big believer in coincidences. Am i doing something wrong?
any other thoughts?
thanks again

Aperture 3 sees external drive differently when used as network drive

I have an Aperture library with 32000 files. When I started running out of disk space on my Macbook Pro I switch from Managed to Reference. I connected my external drive and Aperture moved the images. When I disconnect the drive, connect it to my iMac, and access the drive via my iMac, Aperture shows all my images as offline. I verified in terminal that the path hasn't changed (/Volumes/MyBook750/).
Is there a way to get Aperture to see the drive without having to use the Locate Referenced Files option every time I switch from external to network share?

The short answer is no there is not. I have a work-around but it is not for the feint of heart (dedicated 10GigE iSCSI network and some direct DB writes) but there is no easy way to deal with it.
If my memory serves this used to work a bit differently in Ap2 where a couple different criteria were used. Now it seems to be directly based on volume UUID even thought the path name is still stored in the DB. Maybe it's just me?
RB

Lightroom – Library view – Why 2 different displays of same hard drive

Background - PC/WinXP32/LR2.6 – I use a “working catalogue” for this months shots – on my C drive, and an “archive catalogue” on a large external network storage (Raid) drive (“Ark”). This is because – when I just used the external drive, if I exported to CS3 to finish off an image, then saved it back into LR, it would take 20 – 30 secs, whereas if I worked from a Catalogue on my C drive it would save it in 2-4 seconds. (who knows why?).
When I have finished working on that months images, I then “import from catalogue” into my “archive cat” (without copying the original raw image files), then I copy across the image files via explorer, then re-link them in LR (I don’t copy the image files across with the cat because I have found that it renames them all differently to my naming scheme!).
The problem – this has worked well for 6 months or so until now. When I re-link the folders, it is putting them (on LHS of Library module – see screen shot at http://chrishowe.zenfolio.com/p773837375/e1b184507
) into another file system under a second “copy” of “Ark”. Even worse, I use annual & quarterly parent folders (see screenshot at http://chrishowe.zenfolio.com/p773837375/ebe93e9c
for folder/file structure) – my annual folder “Lightroom 2010”, after I put a dummy image into it, so it will import, has been placed in the first version of “Ark” on LHS of Library module, but the individual folders (such as “2010-01-07-snow”) have been put in the second version of “Ark” on LHS of Library module – and furthermore do not have the parent folder showing.
If I right click a folder on LHS and choose “update folder location” etc – it tells me there is already a folder of that name in that location (which I already know).
I could solve this by re-importing all the images ( I tried it with one folder, and it puts it in the right place), but I lose all my adjustments in the develop module – as it just comes up as “import” on LHS.
Has anyone any ideas about this?

I saved them as "complete". The pages I'm saving have the text and images confined within a gray field that is narrower than my monitor screen, with solid black filling in along the sides. The pages I've saved have lost the gray backgrounds and black edges, and spread the remaining text and images across the entire width of the screen. The background for all of it becomes solid white. The two attached images show what I'm talking about.
Thanks for your help!

Trouble with color labels not synching between different machines sharing same data drive

Hi
I am having a problem that seems to have come up when I started using a mix of PS/Bridge CS4 and CS3, in which color labels I apply in Bridge--primarily to folders--do not retain the color label when I look at the same set of folders on the same external hard drive using multiple, different Macintosh machines, running a mix of CS3 and CS4. The color labels will appear on one machine and then not appear at all on another. Note: they don't appear as white labels without a color. It's as if they were never labeled at all!
I use multiple Macs to connect to one primary external data drive. I consistently configure Bridge to export caches to the external drive, and with CS3 any color labels I applied to folders were consistently displayed in the same way on multiple machines.
Every since I upgraded a couple of my Macs to CS4, I now notice that color labels applied on one machine aren't showing up when I attach my external drive to other machines. I've even noticed a problem connecting to the external drive from two different user profiles on the same Mac laptop (running CS4).
I have tried resetting the preferences and the cache on all of these machines. I also then re-toggled the export caches checkboxes on all these machines. Per some earlier troubleshooting, I have also made sure that the naming convention for the labels is the same on all the machines: "Approved" versus "Green," etc.
There just seems to be no rhyme or reason for why the color labels are not synching.
HELP!?
Thanks in advance.

I have no clue at all, labels should stay visible after having applied them
to a file and used purge cache. And they do so on my system.
Normally there will not be many reasons to use the purge cache option unless
you have trouble, every time you alter a file it should be auto update the
preview and thumb, is this not in your workflow?
Are you still working with same files that were also present on your other
system and using CS3?
Have you considered to start from scratch?
Quit Bridge, from the user library preference folder delete the plist file
for Bridge to the trash and in the same library from the caches folder /
Adobe/BridgeCS4 move the cache file outside the user library if you want to
backup this file (or to the trash if you don't want it anymore)
Both files will replace itself with fresh ones but the cache needs to start
all over again building previews.
Again hold option when starting Bridge first time and again choose refresh
preferences.
Set the preferences for Bridge to your wishes and try again.
However, if I go to "Tools-Cache-Purge Cache For Folder" and purge the cache
for the folder I'm working in, the color labels disappear. Is this expected
behavior? Shouldn't the color labels be recreated?? Again, I have repeatedly
purge the cache in this way, have reset Bridge CS4 settings, and have
re-selected the option to "Export Caches To Folders When Possible." What's
going on!?!?!? Thanks.

How to manage different instrument models with one driver?

Hi,
I have a driver already developed for an instrument and want to incorporate another model into it. These instruments have the nearly the same instruction set except one is a subset of the other. I would like to know the standard way or the NI way of combining these drivers. Is there a way of storing global data? I'm using LabView 6.0.
Thanks in advance.

There are various techniques used when creating a driver that supports multiple models or models with different installed options, where there are slight functional differences between the models and options.
If there are VIs that only pertain to a specific model or option, then modify the VI prefix to associate that VI with the particular model/option. For example, a function general family driver might use "ag33xxx" as the general prefix, but VIs that only operate on the ag33250 might use the prefix "ag33250".
It sounds as if you need to remember this model/option to modify functionality within a common VI. For example, the commands might differ between two different models. To handle this situation, you store model information in the User Data V
ISA property. At initialization time, you can detect which model you are connected with and either store the model number directly or some ID to represent the model.
Both these techniques are used in the Agilent 33xxx function generator driver . You will see how User Data is set in the Initialize VI and the retrieved in the Configure Burst Modulation VI.

Two tunnels, two different mtu values, no OSPF adjacency

Hi all,
Well this is an interesting one, i have a tunnel configured between two 2921 routers that used to work just fine, we had an management access issue on one of the routers and it had to be rebooted, all looked fine until one of OSPF adjacencies didn't come up, the one across the tunnel in question, ran a dubug and saw;
Apr 10 2015 09:58:30.319 AEST: OSPF-100 ADJ Tu100: Nbr 10.0.6.12 has larger interface MTU
OK, so i check both ends of the tunnel, MTU different;
bne-rt01#sh int tunn 100
Tunnel100 is up, line protocol is up
Hardware is Tunnel
Internet address is 10.0.3.62/30
MTU 17874 bytes, BW 204800 Kbit/sec, DLY 50000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive not set
Tunnel source 10.255.255.1 (GigabitEthernet0/1/0), destination 10.255.255.5
Tunnel Subblocks:
src-track:
Tunnel100 source tracking subblock associated with GigabitEthernet0/1/0
Set of tunnels with source GigabitEthernet0/1/0, 2 members (includes iterators), on interface <OK>
Tunnel protocol/transport GRE/IP
Key disabled, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255, Fast tunneling enabled
Tunnel transport MTU 1434 bytes
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Tunnel protection via IPSec (profile "PTQ-IPSEC-PROFILE-2")
Last input 00:00:02, output never, output hang never
Last clearing of "show interface" counters 27w0d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 103048
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
2526404 packets input, 944901813 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
2701610 packets output, 706777352 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
brn-rt01#sh int tunn 100
Tunnel100 is up, line protocol is up
Hardware is Tunnel
Description: PIPE_Backup
Internet address is 10.0.3.61/30
MTU 17866 bytes, BW 204800 Kbit/sec, DLY 50000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation TUNNEL, loopback not set
Keepalive not set
Tunnel source 10.255.255.5 (GigabitEthernet0/1/0), destination 10.255.255.1
Tunnel Subblocks:
src-track:
Tunnel100 source tracking subblock associated with GigabitEthernet0/1/0
Set of tunnels with source GigabitEthernet0/1/0, 2 members (includes iterators), on interface <OK>
Tunnel protocol/transport GRE/IP
Key disabled, sequencing disabled
Checksumming of packets disabled
Tunnel TTL 255, Fast tunneling enabled
Tunnel transport MTU 1426 bytes
Tunnel transmit bandwidth 8000 (kbps)
Tunnel receive bandwidth 8000 (kbps)
Tunnel protection via IPSec (profile "PTQ-IPSEC-PROFILE-2")
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters 01:04:19
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1
Queueing strategy: fifo
Output queue: 0/0 (size/max)
5 minute input rate 3000 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
1723 packets input, 1069064 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
962 packets output, 91128 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 output buffer failures, 0 output buffers swapped out
checked the IP MTU, different;
bne-rt01#sh ip int tunn 100
Tunnel100 is up, line protocol is up
Internet address is 10.0.3.62/30
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1434 bytes
brn-rt01#sh ip int tunn 100
Tunnel100 is up, line protocol is up
Internet address is 10.0.3.61/30
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1426 bytes
Checked the source interfaces MTU, same;
bne-rt01#sh int gi0/1/0
GigabitEthernet0/1/0 is up, line protocol is up
Hardware is EHWIC-1GE-SFP-CU, address is 442b.03e5.8870 (bia 442b.03e5.8870)
Description: OPTUS IPVPN WAN
Internet address is 10.255.255.1/30
MTU 1500 bytes, BW 204800 Kbit/sec, DLY 10 usec,
brn-rt01#sh int gi0/1/0
GigabitEthernet0/1/0 is up, line protocol is up
Hardware is EHWIC-1GE-SFP-CU, address is 5057.a819.3620 (bia 5057.a819.3620)
Description: OPTUS IPVPN WAN
Internet address is 10.255.255.5/30
MTU 1500 bytes, BW 204800 Kbit/sec, DLY 10 usec,
Checked IP MTU on source, same;
bne-rt01#sh ip int gi0/1/0
GigabitEthernet0/1/0 is up, line protocol is up
Internet address is 10.255.255.1/30
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
brn-rt01#sh ip int gi0/1/0
GigabitEthernet0/1/0 is up, line protocol is up
Internet address is 10.255.255.5/30
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
below is the configuration of the physical source;
bne-rt01#sh run int gi0/1/0
Building configuration...
Current configuration : 209 bytes
interface GigabitEthernet0/1/0
description OPTUS IPVPN WAN
bandwidth 204800
ip address 10.255.255.1 255.255.255.252
ip traffic-export apply WAN-Traffic-capture size 1000000
duplex auto
speed auto
end
brn-rt01#sh run int gi0/1/0
Building configuration...
Current configuration : 209 bytes
interface GigabitEthernet0/1/0
description OPTUS IPVPN WAN
bandwidth 204800
ip address 10.255.255.5 255.255.255.252
ip traffic-export apply WAN-Traffic-capture size 1000000
duplex full
speed 1000
end
below is the configuration of the tunnel interfaces;
bne-rt01#sh run int tunn 100
Building configuration...
Current configuration : 245 bytes
interface Tunnel100
bandwidth 204800
ip address 10.0.3.62 255.255.255.252
ip flow ingress
ip flow egress
tunnel source GigabitEthernet0/1/0
tunnel destination 10.255.255.5
tunnel protection ipsec profile PTQ-IPSEC-PROFILE-2 shared
end
brn-rt01#sh run int tunn 100
Building configuration...
Current configuration : 270 bytes
interface Tunnel100
description PIPE_Backup
bandwidth 204800
ip address 10.0.3.61 255.255.255.252
ip flow ingress
ip flow egress
tunnel source GigabitEthernet0/1/0
tunnel destination 10.255.255.1
tunnel protection ipsec profile PTQ-IPSEC-PROFILE-2 shared
end
To be honest i'm a bit lost as to the reason, any ideas guys?
regards
warren

Hi Warren,
According to this thread:
https://supportforums.cisco.com/discussion/11305311/understanding-mtu-given-gre-tunnel
the first displayed MTU of over 17000 bytes (let's call it simply tunnel MTU as opposed to the tunnel transport MTU) is computed from platform buffer sizes. I suspect that the memory-size iomem command may have something to do with this. Without this command, the router decides how much memory to set aside for packet buffers depending on the installed interfaces and network modules - and of course, based on the IOS version as well, as this automatic IOMEM sizing is performed by the IOS when booting, and different IOSes may do things differently. With this command configured, a fixed percentage of RAM can be reserved. Could something of this have changed between reboots - a different IOS version, perhaps, or adding/removal of this command, or change in installed network modules and interfaces?
Nonetheless, the difference between the tunnel MTUs (8 bytes) seems to correspond to the difference between the tunnel transport MTUs and IP MTUs. Somehow, the change in the tunnel MTU could have affected the resulting tunnel transport MTU.
Yet another question is whether the IPsec policy (transform set, key sizes, etc.) is identical to the IPsec policy before the reload. If my memory serves me, in IPsec, if two peers have identical but differently ordered ISAKMP and IPsec policies, the resulting IPsec operation depends on who first started the ISAKMP negotiation (the idea is: the initiator of the IPsec tunnel proposes all its ISAKMP, and afterwards, all its IPsec policies, and the target of the IPsec tunnel chooses the first one that matches one of its policies). If by any chance the configuration of ISAKMP policies, IPsec transform sets, etc. is not letter-identical on this router and the other endpoint, it is possible that the router now operates the IPsec differently than before the reload, which could affect the overall overhead, and thereby the tunnel transport MTU as well.
In any case, with tunnels, it is my strong recommendation to configure a conservatively low MTU manually. With IPsec-protected GRE tunnels over IPv4, the recommended manual MTU is 1400 and so the TCP MSS should be clamped to 1360. The recommendation for MTU of 1400 is taken from this document:
http://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/25885-pmtud-ipfrag.html#t16
I would personally suggest configuring the MTU manually on all your tunnels to 1400. This will both provide for a reasonable reserve in case your own ISP uses some additional overhead to carry your packets, and at the same time, it will prevent your routers from automagically (and obscurely) changing your tunnel transport MTUs between restarts.
Best regards,
Peter

Different regional code on external drive

I would like to keep my original regional code on my mac set to 2 (europe) and reset the regional code of a external dvd drive to 1 (north america).
I buy several dvd's from several different countries and would like to watch them all on my mac.
Would this be possible, or will my OS stop me from doing this ?
That nice flat DVD player, designed for the Macbook Air would be nice.
Thanks for your help.

I have an external HP DVD optical drive that I changed to Region 2 so I can play and backup my Region 2 DVDs and play them on my standalone DVD player.
I don't understand the problem. You insert a Region 2 DVD into your external drive and you are then asked to reset the Region code. Just do it.
Follow the instructions.
On my ancient HP drive, I had to use a PC to change the Region code, but most newer drives will recognize a Mac for the Region change.
Message was edited by: nerowolfe

A different laptop to external hard drive question

hey folks - I am hoping someone can help me (or clarify things for me)
My question is about shootig remotely, downloading files onto lightroom in the field, then transferring the whole lot to my external hard drive when I get home (so there is NOTHING left on my laptop except the lightroom application and an empty catalog when I am done)
I see people asking a similar question all the time on blogs and FAQs, but the answers do not actually answer my problem/question. The answers I see all the time are about exporting and importing catalogs... maybe this is the solution, but I can't see how it answers my parameters above.
Here is the equipment I am using:
- MacBook Pro
- Lightroom 2.1
- External Western Digital hard drive/firewire
- Nikon DSLRs
- Card reader
Here is the situation:
I have the lightroom application loaded onto my laptop. I have a massive repository of my "negatives" on my external drive. I have one big "catalog" on the external drive in the same folders with my "negatives". (so, to view those photos, I open that external drive catalog and view/edit the massive group of photos).
However, when I am on the road, I shoot and download the nagatives onto my laptop hard drive and add the files to a catalog that I have on my laptop -- so, based on my understanding of how lightroom works, these new imports (on the road) have 1) the actual negatives, 2) the metadata/lightroom files thumbnails and details of my edits, and 3) these are included in the "catalog" on my laptop hard drive. So, then, while still on the road, I edit the new photos, crop, color correct etc.
Then, when I get home, I would like to completely transfer/migrate EVERYTHING I just wrote above (except the actual lightroom application and the "catalog" that sits on my laptop) into the existing catalog and negative folders on my external drive... I would like it all to blend into my main system run off my external drive as if I had originally imported the files into my main catalog on my external drive... and I would like my laptop to be like it never had anything to do with the import/edits on the road (no files whatsoever in terms of originals, lightroom files, etc.)
All of the instructions/answers I can find on line tell me how to "export" my catalog to my external hard drive (essentially creating a duplicate version on my external hard drive - showing how you can do this to take images to clients, etc.).
Can anyone point me to an explanation of the process to completely TRANSFER (not copy) all related files from my laptop to my exiting catalog and negative file folders on my external when I come back from the field?
sorry if this is confusing - I may not be interpreting the instructions I am seeing correctly.
any help would be greatly appreciated.
thanks
steve
www.holleyimage.com

I ended up creating a folder within LR on the ext drive-then moved my folders from the internal and another ext drive. I intend to delete those exported (fr LR) files I mentioned in my last post. each one of them had an additional file under it (X something) that said it contained metadata. I fear that by exporting those files, I've now lost the metadata in the files in the catalog. If that's the case, obviously, I'd like to get it back if I can. also, is there a way to make sure I have everything in my new external drive that was on the other two drives? (they were pretty disorganized and I'm not sure all the image files were imported to this catalog. can I import the files I'm not sure I have to the top level folder on my new drive and tell it not to import suspected duplicates and then move any imported files (within LR) to the proper folders?
and one final question: when I exported all the image files into the new drive, LR said it couldn't export about 1000. they are in a separate folder and when I look inside, I see question marks on them. I suspect I already have them in the catalog and these are duplicates because when I didn't know what I was doing, I ended up with a lot of duplicate previews. do you think I should remove that folder with the previews in it and will that take them out of the catalog as well?
thanks in advance for your help
debby (virginiaDeb)

Different mtu's in dlpi driver

Similar Messages

Maybe you are looking for