Now i have extended 3 Servers VLANs(120,121,122) from DC1 to DC2 over L2 trunk over dark fiber.i hust allowed these 3 VLAN s to cross the trunk along with "STP BPDUFILTER ENABLE" for stability in the both DCs
,when i issue the command "sh vlan br" on DC2 CORE-SWITCH ,i saw the 3 VLANs Listed outthere,the question is::do i need to assign any SVI s interface on CORE Switch at DC2 or just assign an L2 VLAN for each servers sitting and this servers rely on HSRP VIP on the DC-1 and every things works perfectly
Server 1 (WEB) 22.214.171.124 assigned to L2 VLAN 120 its DG Pointed to the HSRP VIP address at DC-1 (VIP=126.96.36.199)
Server 2 (EXC) 188.8.131.52 assigned to L2 VLAN 121 its DG Pointed to the HSRP VIP address at DC-1 (VIP=184.108.40.206)
You need to create an SVI for each vlan on your core switch or whichever device needs to do the routing between vlan 120, 121, and 122, if not these vlans will not be able to communicate with each other. Can you provide a diagram of your network? Also point out what devices are just layer-2 and what devices are layer-2 and 3.
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