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โญ Group_Study/Networking

[9์ฃผ์ฐจ] Mobility

by ํฌ์ŠคํŠธ์‰์ดํฌ 2022. 11. 30.

Mobility

What is mobility?

โœ” High Mobility: ๊ณ„์† TCP ์—ฐ๊ฒฐ์„ ์œ ์ง€ํ•œ ์ฑ„๋กœ ๋„คํŠธ์›Œํฌ๋ฅผ ์ด๋™


โœ” **์ดํ•˜ ๋‚ด์šฉ์€ ์‹ค์ œ ์กด์žฌํ•˜๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๋ผ mobility์— ๋Œ€ํ•œ ๊ฐœ๋…์ ์ธ ๋‚ด์šฉ์ด๋‹ค.**

vocabulary

โœ” permanent address
โœ” home network
โœ” home agent
โœ” visited network
โœ” care-of-address
โœ” correspondent

Mobility: registration

โœ” foreign agent๋Š” home agent ํ•œํ…Œ mobile host๊ฐ€ visited nework์— ์ ‘์†ํ–‡์Œ์„ ์•Œ๋ ค์ค€๋‹ค.
โœ” mobile host๊ฐ€ ์–ด๋””๋กœ ์ด๋™ํ–ˆ๋“  ๊ฐ„์— home agent๋Š” mobile host์˜ ์œ„์น˜๋ฅผ ์•Œ ์ˆ˜ ์žˆ๊ฒŒ ๋œ๋‹ค.

Mobility routing

indirect routing

โœ” ์™ธ๋ถ€ host๊ฐ€ mobile host์— ์ ‘๊ทผํ•˜๊ณ ์ž ํ•  ๋•Œ permanent address๋กœ ํŒจํ‚ท์„ ๋ณด๋‚ด๋ฉด home agent๊ฐ€ mobile host๊ฐ€ ์œ„์น˜ํ•ด์žˆ๋Š” foreign agent๋กœ forwarding
โœ” ์žฅ์ : ๊ฐ„ํŽธํ•˜๋‹ค
โœ” ๋‹จ์ : ์˜ค๋ž˜ ๋Œ์•„๊ฐ€๊ธฐ ๋•Œ๋ฌธ์— ๋”œ๋ ˆ์ด ๋ฐœ์ƒ ๊ฐ€๋Šฅ์„ฑ!

direct routing

โœ” home agent๊ฐ€ forwarding์„ ํ•ด์ฃผ๋Š” ๊ฒƒ์ด ์•„๋‹ˆ๋ผ mobile agent์˜ ์œ„์น˜๋ฅผ ์•Œ๋ ค์ค€๋‹ค.
โœ” ์žฅ์ : indirect์™€ ๋น„๊ตํ–ˆ์„ ๋•Œ ์ง์ ‘์ ์œผ๋กœ ์—ฐ๊ฒฐ
โœ” ๋‹จ์ : ์™ธ๋ถ€ host๊ฐ€ ํ•ด์•ผํ•  ์ผ์ด ๋Š˜์–ด๋‚˜๊ฒŒ ๋œ๋‹ค

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