Improving ASR9k resilience - Looking for feedback.

Asking all our customers.  
Looking for some other examples where we had an issues on the a9k where we might have some gap in system resiliency.  Looking for issues where we might have seen a HW or SW issue and the router didn't handle it in a way you would have preferred to allow network redundancy to take over.  Please provide as much information about the situation as you can.  As well as what behavior you believe should take place?  If you have SRs or bug IDs please include as well. 
Here are some examples of the past that we have already addressed. 
CSCuc04493 - Disable LC interfaces if online-diags reports datapath error
This allows us to shutdown ports where datapath errors occur to allow network redundancy to kick in.
CSCun00493 - Need recovery mechanism for Punt/FPGA CRC errors in RSP440 
This has the RSP perform a failover or reload when it loses communication to the fabric.  
Thanks,
Bryan Garland 
Bryan Garland  CCIE#1942
Technical Leader, Engineering
HERO BU- Deployment & Escalation

Hi Bryan,
I see the NP performance as an area for improvements. There are certain NP lock conditions where automatic action is taken to recover from this situation, but there is no such thing when it comes to an NP overload scenario. There are certain NP counters which indicate an NP performance overload, but it is cumbersome for the customers to monitor these values. So it would be nice to at least have logging entries if the NP is overloaded or the ability to have actions taken. A typical example would be netflow, which is intensive for the NP because it needs to create frame copies for netflow. There is a punt policer that protects the line card CPU, but with very low sampling rates and small packets at a high rate the NP might get overloaded, leading to intermitting packet loss (rare but possible).
Cheers,
Florian

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    Thanks :).
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    uploaded
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    ' Example02()
    ' Example03()
    ' Example04()
    ' Example05a()
    ' Example05b()
    ' Example05c()
    Stop
    End Sub
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    Hey, where are those subs??
    Actually I broke Form1 apart so that I could show you the start of it above, and I have the subs mentioned in a Partial Class
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    Private Sub Example01()
    Try
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    "ABC Hardware Company", _
    "123 Main Street", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347")
    MessageBox.Show(customerList(0).ToString, _
    "Example01")
    Stop
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    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
    MessageBoxIcon.Warning)
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    End Sub
    Notice above that the parameters for the sub give you an idea about how it’s set up. This includes the use of an Enum (enumerator)
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    "123 Main Street", _
    "Building 'E'", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347")
    MessageBox.Show(customerList(0).ToString, _
    "Example02")
    Stop
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    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
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    End Try
    End Sub
    Example 3, below, shows using three lines for the address:
    Private Sub Example03()
    Try
    Ken.CustomerInfo.AddNewCustomer(customerList, _
    "ABC Hardware Company", _
    "123 Main Street", _
    "Building 'E'", _
    "Suite 4", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347")
    MessageBox.Show(customerList(0).ToString, _
    "Example03")
    Stop
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    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
    MessageBoxIcon.Warning)
    End Try
    End Sub
    If you’re wondering about how all of those textual outputs shown in the MessageBox got formatted like that, look through the
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    Example 4, below, shows adding a comment BUT skipping the option for the e-mail:
    Private Sub Example04()
    Try
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    "123 Main Street", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347", _
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    "Example04")
    Stop
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    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
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    Note the use of “comments:=”
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    Try
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    "123 Main Street", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347", _
    "[email protected]")
    MessageBox.Show(customerList(0).ToString, _
    "Example05a")
    Stop
    Catch ex As Exception
    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
    MessageBoxIcon.Warning)
    End Try
    End Sub
    I am a strong advocate of data validation – on any and all levels that it can be done. Look at the code in the namespace to
    see how it was able to detect that what was entered wasn’t in correct format.
    Example 5b, below, shows entering the e-mail correctly:
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    Try
    Ken.CustomerInfo.AddNewCustomer(customerList, _
    "ABC Hardware Company", _
    "123 Main Street", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347", _
    "[email protected]")
    MessageBox.Show(customerList(0).ToString, _
    "Example05b")
    Stop
    Catch ex As Exception
    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
    MessageBoxIcon.Warning)
    End Try
    End Sub
    Lastly, example 5c, below, shows entering both a comment and an e-mail address:
    Private Sub Example05c()
    Try
    Ken.CustomerInfo.AddNewCustomer(customerList, _
    "ABC Hardware Company", _
    "123 Main Street", _
    Ken.CountryName.USA, _
    "Charleston", _
    "South Carolina", _
    "29412", _
    "8138992347", _
    "[email protected]", _
    "Customer pays slowly - be careful with credit!")
    MessageBox.Show(customerList(0).ToString, _
    "Example05c")
    Stop
    Catch ex As Exception
    MessageBox.Show("An exception was thrown:" & _
    vbCrLf & vbCrLf & ex.Message, _
    "Program Error", MessageBoxButtons.OK, _
    MessageBoxIcon.Warning)
    End Try
    End Sub
    Try it out. Download the project folder, let VS convert it and run it. Try entering something invalid in, for example, characters
    in the phone number, things like that. It needs a lot of improvement, but this might give you an idea of what I mean by “customized to what you want it to be”.
    For instance, your TreeView – have one or more methods in the class to build that and hand you (the consumer of the class) back
    the data to use to be able to quickly generate the TreeView showing anything you want it to show, any way you want it to show it.
    That’s the power of all of this.
    Also do know that “database or classes” isn’t accurate; they’re not mutually exclusive and in fact, most really involved programs
    which use a database back-end have many classes right along with it.
    Food for thought and I hope you found this helpful. :)
    Still lost in code, just at a little higher level.

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    juster wrote:You use empty prototypes for all your functions. These are not necessary and I think you have picked up this habit from somewhere else. Most likely from shell scripting. I also only mention this because prototypes can be misleading to programmers because they almost always do the unexpected and cause subtle confusion.
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    Removed them all.
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    I was actually aware the ampersands are not required, but I like them... They're just a little hint when skimming code that it's a function... Just like $, @ or % on variables. Having a Google around, I didn't actually know there was a difference between using it and not using it, so I'm removed them too. I'll get used to it
    juster wrote:The setters in your docs use assignment instead of passing the new values as arguments to methods.
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    Fixed also.
    juster wrote:Lastly, and maybe most important, why not put this on CPAN? Join us in the chaos! Anyways... have fun and merry xmas.
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    I'm thinking about your suggestion but so far I can't decide whether or not to implement it.
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    I have a major project this week where over 6 days I wil need to generate a couple of hundred keepers and produce slide show from them for an incentive trips awards banquet. I am not interested or concerned about using LR4 or LR3 for the slide show, I have a seperate workflow in FC7. The photos also upon my return to states are also posted to a photo sharing site for the members of the incentive trip to download for their personal use. This puts a premium of on metadata and keywording.
    I am an enthusiast shooting Olympus E-5 and have used LR4 since the Beta to process some weekend projects. I have found that Process 2012 is, as promised is much better at dealing with highlights and shadows and prefer how the process deals with ORF files. Much truer colors with less tweaking. For whatever reason, Process 2010 never has dealt as well as my taste would like with the E-5's RAW files. Never hd this issue with my previous 4/3 Oly bodies. Needess to say LR 4 for my needs was/is a big hit with me so far.
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    I am seeking opinions here because I am really on the fence. Be gentle those of you who are far more experienced in these matters than I am.
    Thanks in advance for your help!
    Cheers
    Katz

    But, I'd give it a go, knowing the concequences.
    I put small shoots through, my racehorses in training and some more basic shoots, I've run a couple of magazine shoots through LR4.
    Rob Cole and others have commented that there may be issues getting whites to white for deep etching, so a product shoot against a white background may be an issue.
    I have a complex workflow for my mainstream clients, so that still goes through LR3. To stack, set white balances and export to TIFF, to enblend bracketted images and import the resultant TIFFS back to LR3, make the web gallery courtesy of theturninggate and then present that to my clients
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    As a professional I want to go back to the backup RAW images, but I do have frequent catalog backups, and I'm loving the LR4 improvements. I can get results far faster with the beta than with LR4, I am using the library, map, develop and web, I've never used the slideshow, I dont make books, and I've still not unpacked my fabulous Canon printer since I arrived in Cape Town 4 years ago.
    However as most of the reviews of LR4 have indicated, there are very few changes to web and the library does not seem to do much more than it used to.
    Yes I get crashes several times a day, but not once has LR4 told me it was having to "repair" the catalog, it just opens and I have to find the last catalog I was working on. The time taken for LR4 to apologise and contact Adobe is so little, that the time I save in editing 10 photos more than covers that crash 3 times.
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    Victoria, Hal, etc are correct, not a chance is the sensible option, as its a beta and with a new pipeline, process and prowess, and with bugs to iron out, and the beta catalog could crash and corrupt and you'd need to open a backup catalog, or it could even break the sidecars, or the metadata in the DNG files.
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    JUST SAY NO FOLKS, it may be nice, but its dangerous.

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    Hi Dore,
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    ?

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    Thomas,
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    See a comparison at elgato's site for EyeTVs offered in the US.
    I'm very satisfied with the EyeTV. Sometimes, when the signal isn't strong enough, the screen freezes for a second or so, but that's okay with me.
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