We are in the process of deciding how to best configure our network between our primary site and our recovery site for SRM 5. We have a 100mb 13ms MPLS open pipe between our primary and disaster recovery site. It is an ethernet handoff and we can configure each end as we see fit.
My question surrounds Stretched VLANs. We would rather not re-ip VMs in our protection groups and have them keep the same IP at the DR site when failed over. How is the network set up? The default gateways for our VLANs are located at the primary site, if we stretch the VLAN to our DR site, if the production site went out how would data at our DR site know how to route traffic without the VLANS respective default gateways?
Can someone enlighten me? Do I need to set alternate gateways at the DR Site on the Juniper L3 switches on each end? Create static routes for traffic that needs to traverse the WAN? Input default and alternate gateways on the VMs OS for networking? Your insights will be appreciated.
Thanks,
Ed