Author Topic: Explain me what adding VHID for every IP would make the CARP traffic very noisy (Read 2475 times)

davide · « **on:** August 12, 2019, 04:43:26 pm »

Please,
someone can explain me what exactly means "adding a VHID for every IP would make the CARP traffic very noisy"

Thank you very much.

mimugmail · « **Reply #1 on:** August 12, 2019, 05:31:38 pm »

A multicast packet per second per carp. Thats why you can add an alias and link to carp vhid

davide · « **Reply #2 on:** August 12, 2019, 07:47:12 pm »

Thank you very much for the explanation, now I have a more clear idea of what means traffic noisy. :-)

I understand that If I use IP Alias for the 2nd IP I need to setup this IP Alias manually also on the failover router.
If I setup IP Alias on the same VHID Group of the CARP address my configuration is still in high availability?

Box1:
Carp IP=8.8.8.8 VHID Group=1
IP Alias=8.8.8.9 VHID Group=2

Box2:
Carp IP=8.8.8.8 VHID Group=1
IP Alias=8.8.8.9 VHID Group=2

If Box1 dies I can still reach both 8.8.8.8 and 8.8.8.9 just like using two CARP IP?

Thanks

mimugmail · « **Reply #3 on:** August 12, 2019, 09:44:48 pm »

No, alias needs to be in same group, otherwise it wont make sense. Sync of alias should already be done automatically I guess

Author Topic: Explain me what adding VHID for every IP would make the CARP traffic very noisy (Read 2475 times)

davide

Explain me what adding VHID for every IP would make the CARP traffic very noisy

mimugmail

Re: Explain me what adding VHID for every IP would make the CARP traffic very noisy

davide

Re: Explain me what adding VHID for every IP would make the CARP traffic very noisy

mimugmail

Re: Explain me what adding VHID for every IP would make the CARP traffic very noisy