From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001 From: Sven Eisenhauer Date: Fri, 10 Nov 2023 15:11:48 +0100 Subject: add new repo --- Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/buttons.html | 110 +++++++++++++++++++++ Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/content.html | 70 +++++++++++++ Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/index.html | 29 ++++++ Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/media.html | 21 ++++ 4 files changed, 230 insertions(+) create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/buttons.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/content.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/index.html create mode 100644 Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/media.html (limited to 'Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5') diff --git a/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/buttons.html b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/buttons.html new file mode 100644 index 0000000..1485ee2 --- /dev/null +++ b/Bachelor/CCNA4/en_CCNA4_v30/ch2/2_3_5/buttons.html @@ -0,0 +1,110 @@ + + + + + + + + + + + +New Page 1 + + + + + + + + + + + + + + + + + + + + + + + + +
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+ + 2.3 + WAN Design 
  + 2.3.5 + Other layered design models 
+ + + + + + +
+ Many networks do not require the complexity of a + full three-layer hierarchy. + Simpler hierarchies may be used. +

+ An enterprise with several relatively small branches that require + minimal inter-branch traffic may choose a one-layer design. Historically + this has not been popular because of the length of the leased lines. + Frame Relay, where charges are not distance related, is now making this + a feasible design solution.

+

+ If there is a need for some geographical concentration, a two-level + design is appropriate. This produces a “star of stars” pattern. Again, + the pattern chosen based on leased line technology will be + considerably different from the pattern based on Frame Relay + technology.

+

+ When planning simpler networks, the three-layer model should still be + considered as it may provide for better network scalability. The hub + at the center of a two-layer model is also a core, but with no other + core routers connected to it. Likewise, in a single-layer solution the + area hub serves as the regional hub and the core hub. This allows easy + and rapid future growth as the basic design can be replicated to add + new service areas.

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