Monday, May 20, 2019

Huawei VS Google

In a mаjоr blоw to Huawei, Gооglе has ѕuѕреndеd buѕіnеѕѕ wіth the соmраnу, аnd саnсеllеd thе Chіnеѕе tech gіаnt’ѕ Android lісеnѕе. Gооglе іѕ еndіng trаnѕfеr оf hardware, software and technical ѕеrvісеѕ, ассоrdіng to an exclusive report bу Reuters, and thіѕ move will also іmрасt futurе uрdаtеѕ tо Huawei phones. Huаwеі іѕ thе ѕесоnd lаrgеѕt ѕmаrtрhоnе mаnufасturеr іn thе wоrld, as per research firm Cаnаlуѕ, with аlmоѕt half іtѕ ѕhірmеntѕ gоіng оutѕіdе China.

Thе move comes аѕ thе US gоvеrnmеnt hаѕ аddеd Huаwеі to the ‘Entіtу Lіѕt’, which mеаnѕ that US соmраnіеѕ саnnоt do buѕіnеѕѕ with the Chіnеѕе tеlесоm mаjоr wіthоut ‘explicit approval’ frоm the gоvеrnmеnt. This соmеѕ іn thе mіd оf thе оngоіng trade wаr bеtwееn thе US and Chіnа.

In a ѕtаtеmеnt, Huawei Technologies said they have mаdе ѕubѕtаntіаl contributions tо the development аnd grоwth оf Andrоіd around the wоrld аnd will continue tо provide ѕесurіtу updates аѕ wеll аѕ аftеr ѕаlеѕ services tо all еxіѕtіng сuѕtоmеrѕ.

Tuesday, May 14, 2019

CCNP / BSCI Exam Tutorial: Route Summarization And The OSPF Null Interface

CCNP exam success, particularly on the BSCI exam, demands you understand the details of route summarization.  This skill not only requires that you have a comfort level with binary conversions, but you have to know how and where to apply route summarization with each individual protocol.


CCNP / BCMSN Exam Tutorial: VLAN Trunking Protocol (VTP)

Passing the BCMSN exam and getting one step closer to the CCNP certification means learning and noticing details that you were not presented with in your CCNA studies. (Yes, I know – you had more than enough details then, right?)   One protocol you’ve got to learn more details about is VTP, which seemed simple enough in your CCNA studies!  Part of learning the details is mastering the fundamentals, so in this tutorial we’ll review the basics of VTP.

In show vtp status readouts, the "VTP Operating Mode" is set to "Server" by default.  The more familiar term for VTP Operating Mode is simply VTP Mode, and Server is the default.  It's through the usage of VTP modes that we can place limits on which switches can delete and create VLANs.

In Server mode, a VTP switch can be used to create, modify, and delete VLANs.  This means that a VTP deployment has to have at least one switch in Server mode, or VLAN creation will not be possible.  Again, this is the default setting for Cisco switches.

Switches running in Client mode cannot be used to create, modify, or delete VLANs. Clients do listen for VTP advertisements and act accordingly when VTP advertisements notify the Client of VLAN changes.

CCNA Certification Exam Tutorial: Cisco Switching Modes


CCNA / MCSE / CCNP Certification: Making Failure Work For You

Whether you're on the road to the CCNA, CCNP, MCSE, or you're on any other computer certification track, the odds are that sooner or later, you're going to fail an exam.  It's happened to almost all of us, yours truly included.   What you have to keep in mind in these times is that success is not a straight line.  You've probably seen charts showing the growth of an industry or a business -- you know, the ones that go from left to right, and look kind of jagged.  The line goes up for a while, then down a bit, then up some more, then down a little.


Thursday, May 9, 2019

CCNA / CCNP Home Lab Tutorial: The VLAN.DAT File

CCNA and CCNP candidates who have their own Cisco home labs often email me about an odd situation that occurs when they erase a switch's configuration.  Their startup configuration is gone, as they expect, but the VLAN and VTP information is still there!


Sounds strange, doesn't it?   Let's look at an example.  On SW1, we run show vlan brief and see in this abbreviated output that there are three additional vlans in use: