The Two Principles Of Troubleshooting

  1. Never trust someone else’s configuration.
  2. Don’t trust your own configuration.

But in all seriousness. If you’re migrating configuration, this would be a good place to start:

  • Check all your IP addresses are consistent.
  • Check your masks are consistent.
  • Check your interfaces are correct.
  • If you’re working with peers, check your IP addresses for the peers are correct.I mean all 4 octets. Not just the last one, or two, or three. ALL FOUR. If it’s v6, then FML. Bite the bullet and write a script.
  • Is there a naming convention to follow? There’s a temptation when migrating to stick with the old name, but new devices may require a different convention is adhered to. Reasons for this range from the whimsical to the valid.

If you’re coming up with something new, and it involves addressing new interfaces then start with this:

  • First check your IP allocations are correct. By this, I mean check if you have any hierarchy or ordering. For example, do you reserve addresses by site, geographic location or application? If you do, then make sure these are consistent with what you’ve planned.
  • Is your addressing valid? i.e: Are the subnets and host addresses you’ve assigned correct? Continue reading

Check Out the Designing Active-Active and Disaster Recovery Data Centers Webinar

The featured webinar in October 2016 is the Designing Active-Active and Disaster Recovery Data Centers webinar, and the featured videos include the discussion of disaster avoidance challenges and the caveats you might encounter with long-distance vMotion. All ipSpace.net subscribers can view these videos, if you’re not one of them yet start with the trial subscription.

As a trial subscriber you can also use this month's featured webinar discount to purchase the webinar.

Supreme Court will hear Samsung, Apple damages dispute on Tuesday

The U.S. Supreme Court is to hear arguments Tuesday in a closely-watched dispute between Samsung Electronics and Apple on the procedure for calculation of damages for the infringement of design patents.In general terms, a design patent protects the way an article looks, while utility patents address the way an article is used and works, according to the U.S. Patent and Trademark Office. Some older Samsung smartphones were found by a jury in 2012 to have infringed three design patents related to the look of the iPhone, including its face and rounded bezel design, and the icon layout on the home screen.To read this article in full or to leave a comment, please click here

Apple shares rise as Samsung’s Galaxy Note 7 woes continue

At the end of the trading day on Monday, shares of Apple were up nearly 1.75% before ultimately closing at $116.05 per share. All told, Apple stock is now trading at levels not seen since December of 2015.Part of the recent upswing in Apple shares can of course be attributed to better than anticipated iPhone 7 demand. Though the iPhone 7 was initially pegged as a lackluster upgrade, consumers on the whole appear to be impressed with the device's new camera and blazing fast hardware. Recall, pre-orders for the iPhone 7 set new records at both Sprint and T-Mobile.Additionally, analyst reports in recent weeks have suggested that many iPhone buyers are opting for the more margin-friendly iPhone 7 Plus, further padding Apple's bottom line in the process.To read this article in full or to leave a comment, please click here

WikiLeaks dumps another trove of email, allegedly from Clinton aide

U.S. accusations that WikiLeaks is helping Russian hackers influence the upcoming election hasn't stopped the controversial website from dumping emails allegedly stolen from a Hillary Clinton aide.On Monday, WikiLeaks released an additional batch of 2,000 emails stolen from Clinton's campaign chairman, John Podesta, which could fuel negative press coverage of her candidacy.This came after the site dumped the first batch of emails last Friday, the same day U.S. intelligence agencies publicly blamed the Russian government for hacking the emails of U.S. officials and political groups earlier this year.To read this article in full or to leave a comment, please click here

WikiLeaks dumps another trove of email, allegedly from Clinton aide

U.S. accusations that WikiLeaks is helping Russian hackers influence the upcoming election hasn't stopped the controversial website from dumping emails allegedly stolen from a Hillary Clinton aide.On Monday, WikiLeaks released an additional batch of 2,000 emails stolen from Clinton's campaign chairman, John Podesta, which could fuel negative press coverage of her candidacy.This came after the site dumped the first batch of emails last Friday, the same day U.S. intelligence agencies publicly blamed the Russian government for hacking the emails of U.S. officials and political groups earlier this year.To read this article in full or to leave a comment, please click here

Potential Apple Watch snooping: a not-so-paranoid cyberespionage risk

It may sound paranoid, but the next time you enter a highly confidential meeting, leave your smart watch behind. It's possible the device could be spying on you.That's what ministers in the U.K. are reportedly being told. They've recently been banned from wearing Apple Watches during cabinet meetings on fears that the devices could be hacked by Russian cyberspies, according to The Telegraph.Mobile phones have already been prohibited from cabinet meetings, but the U.K. government has reportedly taken the extra step of also banning smart watches.To read this article in full or to leave a comment, please click here

Potential Apple Watch snooping: a not-so-paranoid cyberespionage risk

It may sound paranoid, but the next time you enter a highly confidential meeting, leave your smart watch behind. It's possible the device could be spying on you.That's what ministers in the U.K. are reportedly being told. They've recently been banned from wearing Apple Watches during cabinet meetings on fears that the devices could be hacked by Russian cyberspies, according to The Telegraph.Mobile phones have already been prohibited from cabinet meetings, but the U.K. government has reportedly taken the extra step of also banning smart watches.To read this article in full or to leave a comment, please click here

Worth Reading: Why Google Gadgets are so Cheap

With its newest gadgets, Google will be able to serve up ads that are more personal and even more relevant to everything its users are doing, as it learns more about them with the voice queries made via Google’s answer to Apple’s Siri, Google Assistant. The more it knows you and your habits, the better to pitch its advertising services to the brands that want your dollars and are willing to pay Alphabet to get them. That’s why Google is able to price all its new hardware below or at parity with its rivals. —Market Watch

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snaproute Go BGP Code Dive (12): Moving to Established

In last week’s post, the new BGP peer we’re tracing through the snaproute BGP code moved from open to openconfirmed by receiving, and processing, the open message. In processing the open message, the list of AFIs this peer will support was built, the hold timer set, and the hold timer started. The next step is to move to established. RFC 4271, around page 70, describes the process as—

If the local system receives a KEEPALIVE message (KeepAliveMsg (Event 26)), the local system:
 - restarts the HoldTimer and
 - changes its state to Established.

In response to any other event (Events 9, 12-13, 20, 27-28), the local system:
 - sends a NOTIFICATION with a code of Finite State Machine Error,
 - sets the ConnectRetryTimer to zero,
 - releases all BGP resources,
 - drops the TCP connection,
 - increments the ConnectRetryCounter by 1,
 - (optionally) performs peer oscillation damping if the DampPeerOscillations attribute is set to TRUE, and
 - changes its state to Idle.

For a bit of review (because this is running so long, you might forget how the state machine works), the way the snaproute code is written is as a state machine. The way the state machine works is Continue reading

Memory is the Next Platform

A new crop of applications is driving the market along some unexpected routes, in some cases bypassing the processor as the landmark for performance and efficiency. While there is no end in sight for the CPUs dominant role, at least not until Moore’s Law has been buried along the roadside, there is another path—this time, down memory lane.

Just as machine learning oriented applications represent the next development platform, memory appears to be the next platform for compute. While this won’t extend to all application areas, given the thrust of machine learning and memory bandwidth and capacity-strained applications, the more …

Memory is the Next Platform was written by Nicole Hemsoth at The Next Platform.

IDG Contributor Network: Tech in banks: Innovating within a sometimes lethargic industry

I was at a conference recently and came across Dawie Olivier, CIO of Westpac Bank and Australasian-operating bank. That it took a trip to Texas to discover someone who lives in the same country as me was an ironic reflection on why industry conferences are still useful events.Notwithstanding the weirdness that we’d never met previously, I was interested to hear of Olivier’s experiences within three different banks in different geographies. After the event, I caught up with him (and thanks must go out to Chef’s awesome PR company for arranging the conversation) to get deeper insight into how banks operate and what it means to innovate within their traditionally constrained environments.To read this article in full or to leave a comment, please click here

OSPF to IS-IS Migration

There are many reasons of OSPF to IS-IS migration, specifically for the Service Provider networks. Some of these reasons are shared later in the case study. OSPF to IS-IS migration can be done in three ways. In this article I will share, ‘  ship in the night approach ‘ which relies on having both routing […]

The post OSPF to IS-IS Migration appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Worth Reading: Creating a PCE Prototype

So almost, a little bit over an year ago, when I wasn’t working for a Vendor and was looking for a PCE to fool around with RSVP-TE/SR-TE but I wasn’t able to find anything. At that time, Only thing I was able to found was Open daylight but its PCEP implementation didn’t have Segment Routing support, so I was out of luck. At the same time I was also working on improving my programmatic skills. So I thought why not combine both problems together and write my own PCEP prototype… —Packet Pushers

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Certificate policy violations force reform at StartCom and WoSign

The top management of StartCom and WoSign will be replaced and the two certificate authorities will undergo audits after browser vendors discovered that they mis-issued many digital certificates, violating industry rules. The investigation launched by Mozilla led to the discovery of 13 instances where China-based WoSign and its subsidiary StartCom issued certificates with various types of problems. Evidence was also found that both CAs issued certificates signed with the SHA-1 algorithm after Jan. 1 in violation of industry rules and intentionally backdated them to avoid being caught. As a result, Mozilla said that it has lost faith in the ability of WoSign and StartCom to correctly carry out the functions of a CA and announced that it will stop trusting new certificates from the two companies. Apple followed suit and announced its own ban for future WoSign and StartCom certificates last week.To read this article in full or to leave a comment, please click here

Certificate policy violations force reform at StartCom and WoSign

The top management of StartCom and WoSign will be replaced and the two certificate authorities will undergo audits after browser vendors discovered that they mis-issued many digital certificates, violating industry rules. The investigation launched by Mozilla led to the discovery of 13 instances where China-based WoSign and its subsidiary StartCom issued certificates with various types of problems. Evidence was also found that both CAs issued certificates signed with the SHA-1 algorithm after Jan. 1 in violation of industry rules and intentionally backdated them to avoid being caught. As a result, Mozilla said that it has lost faith in the ability of WoSign and StartCom to correctly carry out the functions of a CA and announced that it will stop trusting new certificates from the two companies. Apple followed suit and announced its own ban for future WoSign and StartCom certificates last week.To read this article in full or to leave a comment, please click here

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