RH2288H V3 PXE boot failed

NO DHCP or NO proxyDHCP offers were received

1. check the BIOS setting , make sure the PXE function had enable .

2. change the NIC port , it still can't boot successful .

3. RH2288H V3 install centos 7.3 and enable DHCP , the RH2288H V3 can get the IP .

4. replace the cisco switch to Huawei switch , it was successful when boot from PXE .

5. capture messages on switch when connect to HP server and Huawei RH server respectively . capture messages on switch port17 and port7 at the same time .

6. we analyze the message , we found that Huawei RH2288H V3 server message just into  the cisco switch , but didn't come out the cisco switch .

7. the RH2288H V3 discover message was lost in cisco switch .

8. check the cisco switch setting . check the cisco switch whether enable the portfast function. 

the cisco need to enable the portfast function

refer to the csico documentation enable "portfast"  : http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a00800b1500.shtml