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What does option121 command mean?

Created: Feb 29, 2020 03:27:24Latest reply: Feb 29, 2020 03:28:38 73 1 0 0
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Hi all,

I have a problem with using switch as DHCP relay.

option121 ip-address 10.1.1.0 255.255.255.0 10.2.1.1

10.1.1.0 and 10.2.1.1


Which of the two addresses is the start address and which is the destination address?


Please help me, thanks!

  • x
  • convention:

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Admin Created Feb 29, 2020 03:28:38 Helpful(0) Helpful(0)

Hi@ster,

Option 121 means that when IP is assigned, a static route is issued at the same time.

Your delivered static route has a destination address of 10.1.1.0/24 and the next hop of 10.2.1.1.

Glad to help you! Any further questions, let us know.


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jason_hu Admin Created Feb 29, 2020 03:28:38 Helpful(0) Helpful(0)

Hi@ster,

Option 121 means that when IP is assigned, a static route is issued at the same time.

Your delivered static route has a destination address of 10.1.1.0/24 and the next hop of 10.2.1.1.

Glad to help you! Any further questions, let us know.


View more
  • x
  • convention:

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