The forwarding table on the leaf switch is divided between local and global entries. Which two
options are contained in the global station table? (Choose two.)
A.
Local cache of fabric endpoints (not directly attached)
B.
Outside routes
C.
Directly attached endpoints
D.
All hosts attached to the fabric
E.
Default router to the spine proxy
Are you sure that is correct answer, i think the answer should be A and E
0
0
I think the same A and E
0
0
Yes, A & E
0
0
Yes A & E
When a leaf switch receives a frame from the host it needs to determine whether the destination IP is inside the fabric or outside the fabric. If the destination IP matches with any /32 host route entry in the global station table, it means the destination is an endpoint inside the fabric and the leave switch already learned the endpoint. If the destination IP doesn’t match with any /32 host route entry, the global station table leaf switch will check if the destination IP is within the IP address range of the tenant. If the address is within range, then the destination IP is inside of the fabric but the leaf switch hasn’t yet learned the destination IP. The leaf switch then encapsulates the frame to VXLAN frame format with the spine proxy IP as the destination IP of the VXLAN outer IP header. The spine proxy checks the inner destination IP against its proxy database and finds the egress leaf switch IP and forward frame to the egress leaf. When the destination of the packet is outside of the fabric, it will match with one of the routes in the external routing table. The external routing table provides the VTEP (VXLAN Tunnel End Point) address of the border leaf
http://www.cisco.com/c/en/us/solutions/collateral/data-center-virtualization/application-centric-infrastructure/white-paper-c07-732033.html
0
0