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Website title: Network Engineering Stack Exchange

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Message History

Could a frame have different vendor specific fields?

I was analyzing a database of probe requests until I found the following packet which has 3 different vendor specific fields. How to interpret that ? Is it just a wrong packet ?

RadioTap version=0 pad=0 len=24 present=Flags+Rate+Channel+dBm_AntSignal+RXFlags+RadiotapNS+Ext Ext=[<RadioTapExtendedPresenceMask present=b5+b11 |>] Flags= Rate=1.0 Mbps ChannelFr...

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IPv4 shortage is now becoming a reality - what is needed for IPv6 to work?

Today I read that Microsoft has no more IPv4 addresses for its Azure cloud. Earlier this week I read that href="http://www.theregister.co.uk/2014/06/11/ipv4_addresses_depleted_in_latin_america_and_the_caribbean/" target="_blank" rel="noopener ugc n...

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Can you become your own ISP?

How exactly does an ISP connect you to the vast network of computers which is the internet?

In my area there are several ISP's. For example. Bell, Rogers, and Cogeco all connect you to the "same internet." Some services such as start.ca and Distributel piggyback on Bell, Rogers or Cogeco to give you the same Internet cheaper with fewer bells and whistles.

My...

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Why do we need private IP address range?

When it comes to local networks, you have the freedom to use any IP address you want for your network since it doesn't need to communicate on the internet with other devices. However, the RFC specified a range for private IP addresses (such as 10.x.x.x and 192.168.0-255.x). Why a range would be needed if the communication outside the local network uses a public IP address?. I...

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Public IP / IP Transit / IP Peering / ASN / Internet Exchange

I am trying to understand the relationship between IP Transit / Peering and having our range of IP

  • If i subscribed to an ISP internet service and the IP range is allocated by the ISP - it is consider IP transit right ?

  • If i have an ASN number / owned and subscribed IP range from APNIC and i want to advertise this IP range through 2 different ISP p...

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