So this should be fun; I need to swich from HSRP to VRRP to facilitate bringing in a second vendor's hardware to interoperate. We run ipv4 and ipv6 (static assignments) and the VLANs are a mix of physical servers along with vmware guests on Cisco UCS with the fabric interconnects in end-host mode. Physical and vmware guest OS's are mostly linux with a very small number of Windows.
I've read that at least on the ipv4 side, many Windows servers will not accept the gratuitous arp when vrrp is brought up so they'll just sit there happily talking to the dead hsrp MAC. I can't find much of any info on how they'd deal with the change on the ipv6 side. Not a huge deal either way since the Windows stuff is minimal but would like to go in knowing what to expect and what needs to be done. On the linux side, I'm pretty sure it will accept the arp and update the ipv4 default gateway mac; at least it does when testing MITM attacks. Would love to hear real world experience with this though. For ipv6, I can't find much on what it does if its previously learned router's link local address goes unreachable, if it will replace the neighbor table entry with the new vrrp advertised entry, do a solicitation on its own, etc. I'd greatly appreciate any input, thanks, David _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/