Got it

PIM BSR configuration

Created: Jan 20, 2020 03:00:27Latest reply: Jan 20, 2020 03:04:21 172 1 0 0 1
  Rewarded HiCoins: 0 (problem resolved)

Hello team,

We configured 4 x devices as BSR candidates. The priority is marked as 255 on core 1(S7703), when using the display pim rp-info comand, the output shows the priority is 0.  But the output of the display pim bsr-info command shows that the priority is 255. Is it normal? Thank you.

Configuration of Core 1:

#

pim

c-bsr priority 255

c-bsr LoopBack0

c-rp LoopBack0

graceful-restart

#

[Core_1]display pim rp-info

 VPN-Instance: public net

PIM-SM BSR RP Number:4

Group/MaskLen: 224.0.0.0/4

     RP: 10.17.0.1

     Priority: 100

     Uptime: 6d:05h

     Expires: 00:02:17

Group/MaskLen: 224.0.0.0/4

     RP: 10.17.0.2

     Priority: 150

     Uptime: 6d:05h

     Expires: 00:01:46

Group/MaskLen: 224.0.0.0/4

     RP: 10.18.0.1(local)

     Priority: 0

     Uptime: 6d:05h

     Expires: 00:02:11

Group/MaskLen: 224.0.0.0/4

     RP: 10.18.0.2

     Priority: 50

     Uptime: 6d:05h

     Expires: 00:01:50


[Core_1]display pim bsr-info

VPN-Instance: public net

Elected AdminScoped BSR Count: 0

Elected BSR Address: 10.18.0.1

     Priority: 255

     Hash mask length:30

     State: Elected

     Scope: Not scoped

     Uptime: 6d:05h

     Next BSR messagescheduled at: 00:00:06

     C-RP Count: 4

Candidate AdminScoped BSR Count: 0

Candidate BSR Address: 10.18.0.1

     Priority: 255

     Hash mask length:30

     State: Elected

     Scope: Not scoped

     Wait to be BSR: 0


  • x
  • convention:

Featured Answers
Popeye_Wang
Admin Created Jan 20, 2020 03:04:21

Hi Steelblue,

During the dynamic RP election, several routers are configured as Candidate-BootStrap Routers (C-BSRs) and Candidate-Rendezvous Points (C-RPs). A BSR is dynamically elected from C-BSRs. The BSR collects C-RP information and summarizes C-RP information into an RP-Set. The RP-Set is encapsulated in a Bootstrap message and advertised to all the routers in the PIM domain. Then, the C-RPs elect an RP based on a uniform election rule.

The priority in the display pim rp-info command output indicates the RP priority. A smaller value indicates a higher priority.

The priority in the display pim rp-info command output is the priority of the BSR. A larger value indicates a higher priority.

The default value of both priorities is 0, and the value ranges from 0 to 255.

Therefore, you can see that core 1 is elected as the BSR because the priority of the C-BSR is set to 255. And the C-RP priorities of the other three devices are greater than 0. Therefore, core 1 is also elected as the RP.

I hope this helps.

View more
  • x
  • convention:

All Answers
Popeye_Wang
Popeye_Wang Admin Created Jan 20, 2020 03:04:21

Hi Steelblue,

During the dynamic RP election, several routers are configured as Candidate-BootStrap Routers (C-BSRs) and Candidate-Rendezvous Points (C-RPs). A BSR is dynamically elected from C-BSRs. The BSR collects C-RP information and summarizes C-RP information into an RP-Set. The RP-Set is encapsulated in a Bootstrap message and advertised to all the routers in the PIM domain. Then, the C-RPs elect an RP based on a uniform election rule.

The priority in the display pim rp-info command output indicates the RP priority. A smaller value indicates a higher priority.

The priority in the display pim rp-info command output is the priority of the BSR. A larger value indicates a higher priority.

The default value of both priorities is 0, and the value ranges from 0 to 255.

Therefore, you can see that core 1 is elected as the BSR because the priority of the C-BSR is set to 255. And the C-RP priorities of the other three devices are greater than 0. Therefore, core 1 is also elected as the RP.

I hope this helps.

View more
  • x
  • convention:

Comment

You need to log in to comment to the post Login | Register
Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " Privacy."

My Followers

Login and enjoy all the member benefits

Login

Block
Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Reminder
Please bind your phone number to obtain invitation bonus.