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HSRP Protocol

HSRP مخفف Hot Standby Routing Protocol بوده و پروتکلی مخصوص شرکت سیسکو میباشد. از این پروتکل بمنظور افزونگی (redundancy) استفاده میشود.
استاندارد مشابهی به نام VRRP یا Virtual Router Redundancy Protocol نیز وجود دارد که سیسکو آن را نیز پشتیبانی میکند.
در تمام شبکه های محلی (LAN) تمام Host ها برای ارتباط با بیرون از شبکه از یک آدرس default gateway استفاده میکنند که اگر این default gateway دچار مشکل شود ارتباط شبکه با بیرون نا ممکن خواهد شد . با HSRP ما میتوانیم دو دستگاه روتر Gateway داشته باشیم : یکی فعال و دیگری به حالت انتظار (Standby) .تا چنانچه برای gateway فعال مشکلی پیش آمد،آن gateway که در حالت انتظار (Stand by ) است جای آن را بگیرد . در این حالت هر روتر دارای یک آدرس ip فیزیکی است که روی اینترفیسی که به lan متصل می شود تنظیم می گردد. اما همچنین هر دو روتر دارای یک آدرس ip مجازی (HSRP address) نیز هستند که به عنوان default gateway برای Host های Lan مورد استفاده قرار میگیرد.مهم نیست که کدام روترgateway (چه روتر فعال یا چه روتر standby یا پشتیبان) up باشند آدرس HSRP مجازی در هر حالت یکی است.

اکنون به پیکربندی این سناریو می پردازیم:

برای سوییچ لایه سه “0” :

Switch(config)#ip routing

Switch(config)#int f0/1

Switch(config-if)#no switchport

Switch(config-if)#ip address 192.168.1.100 255.255.255.0

Switch(config-if)#int f0/2

Switch(config-if)#no switchport

Switch(config-if)#ip address 192.168.0.1 255.255.255.0

Switch(config-if)#exit

Switch(config)#int f0/1

Switch(config-if)#standby 1 ip 192.168.1.1

Switch(config-if)#standby 1 priority 200

Switch(config-if)#standby 1 preempt

Switch(config-if)#standby 1 timers 2 6

Switch(config-if)#standby 1 autnentication ccnp

 

Switch(config)#ip route 0.0.0.0 0.0.0.0 f0/2

 

وبرای سوییچ لایه سه “1” :

Switch(config)#ip routing

Switch(config)#int f0/1

Switch(config-if)#no switchport

Switch(config-if)#ip address 192.168.1.101 255.255.255.0

Switch(config-if)#int f0/2

Switch(config-if)#no switchport

Switch(config-if)#ip address 192.168.10.1 255.255.255.0

Switch(config-if)#exit

Switch(config)#int f0/1

Switch(config-if)#standby 1 ip 192.168.1.1

Switch(config-if)#standby 1 priority 200

Switch(config-if)#standby 1 preempt

Switch(config-if)#standby 1 timers 2 6

Switch(config-if)#standby 1 autnentication ccnp

 

Switch(config)#ip route 0.0.0.0 0.0.0.0 f0/2 

مدیریت و مشاهده وضعیت پروتکل HSRP:

sh run

sh standby

sh standby brief

عیب یابی پروتکل HSRP:

debug standby#

debug standby errors#

debug standby events#

نوشته شده به وسيله ramin_malek در Cisco ، ديدگاه ‌ها (87)


87 پاسخ براي “HSRP Protocol”

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