Hello everyone
I was suggested to go here from the MS technet forums, as my problem originally was related to TFTP, PXE and ConfigMgr, but it seems the problem can be a cisco router.
I copied the thread i made:
m having a rather peculiar issue with horrendously slow downloading of the boot.wim filer over TFTP. This is for a customer, who has an old ConfiMgr environment and new one which I have recently implemented.
The old environment is configured almost identical to the new environment
-RamDiskTFTPBlockSize is set to 16384 in both cases
-RamDiskTFTPWindowSize is set to the default 4 in both cases
-Send Receive Buffers is identical at 2mb on both
Difference: The new environment has 2 Cisco 3750x switches
Switches are configured as follows:
Switch1:
interface TenGigabitEthernet1/1/1
switchport access vlan 122
switchport mode access
flowcontrol receive on
spanning-tree portfast
!
interface TenGigabitEthernet1/1/2
switchport access vlan 122
switchport mode access
flowcontrol receive on
spanning-tree portfast
Switch2:
interface TenGigabitEthernet1/1/1
switchport access vlan 122
switchport mode access
flowcontrol receive on
spanning-tree portfast
!
interface TenGigabitEthernet1/1/2
switchport access vlan 122
switchport mode access
flowcontrol receive on
spanning-tree portfast
The difference is immense. 15 minutes on the new environment, compared to 30 seconds on the old. The only difference as far as I can tell is the fact the there is a switch connected to the new one, so as far as I can see this is only obstacle that could provide such a drastic stop.
Am I right in assuming this, or is there anything else that could account for this difference?
