Administrator Guide

• filename (Assumes TFTP)
When loading the Dell Networking OS image, if the Dell Networking OS image on the server is dierent from the image on the local ash,
the switch downloads the image from the server onto the local ash and reloads using that image.
Next, the switch tries to load the conguration le. If the conguration le is not specied or if you disable the config-download
parameter, the switch loads the startup-cong from the local ash.
Domain Name Server
Set up a DNS to determine the host name applied in the switch startup conguration when no conguration le is retrieved from the DHCP
server.
The DNS server is contacted only when no conguration le is contained in a DHCP server response and the host name is not resolved
from the network-cong le on the switch. For more information, refer to the Dell Networking OS Conguration Guide, the IPv4
Addressing chapter.
Switch Boot and Set-up Behavior in Jumpstart Mode
When the switch boots up in Jumpstart mode all ports, including the management ports, are placed in L3 mode in a No Shut state.
The switch acts as a DHCP client on these ports for a period of time (dhcp-timeout). This allows the switch time to send out a DHCP
DISCOVER on all the Interface Up ports to the DHCP Server in order to obtain its IP address, boot image lename, and conguration le
from the DHCP server. For example:
1 The switch begins boot up process in Jumpstart mode (the default mode).
2 The switch sends DHCP Discover on all the interface up ports.
00:01:31: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Ma 0/0.
00:01:31: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/0.
00:01:31: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/5.
00:01:31: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/6.
00:01:47: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/8.
00:01:47: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Te 0/35.
00:01:47: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Fo 0/56.
00:01:47: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Fo 0/60.
00:01:47: %STKUNIT0-M:CP %JUMPSTART-5-JUMPSTART_DISCOVER: DHCP DISCOVER sent on Ma 0/0.
3 The IP address, boot image lename, and conguration lename are reserved for the switch and provided in the DHCP reply (one-le
read method). The switch receives its IP address, subnet mask, DHCP server IP, TFTP server address, DNS server IP, bootle name,
and conguration lename from the DHCP server.
If a DHCP oer has no image path or conguration le path, it is considered to be an invalid BMP DHCP oer and the oer is ignored.
The rst DHCP oer with the IP address, Dell Networking OS image, and conguration le, or the IP address and Dell Networking OS
image, or the IP address and conguration le is chosen.
4 The DHCP OFFER is selected.
a All other ports are set to shutdown mode.
00:01:33: %STKUNIT0-M:CP %JUMPSTART-5-DHCP_OFFER: DHCP acquired IP 30.0.0.20 mask
255.255.0.0 server IP 30.1.1.1.
00:01:33: %STKUNIT0-M:CP %JUMPSTART-5-DHCP_OFFER: DHCP tftp IP 30.0.0.1 dns IP 30.0.0.1
router IP 30.0.0.14.
00:01:33: %STKUNIT0-M:CP %JUMPSTART-5-DHCP_OFFER: DHCP image file FTOS-SE-8.3.10.1.bin.
00:01:33: %STKUNIT0-M:CP %JUMPSTART-5-DHCP_OFFER: DHCP config file pt-s4810-12.
5 The switch sends a unicast message to the le server to retrieve the named Dell Networking OS le and/or the conguration le from
the base directory of the server.
a If you use the bootfile-name option, the le name can be 256 bytes. If a lename eld is specied in the DHCP Oer, the
lename can be 128 bytes. The name can be a fully qualied URL or it can be a le name only.
b When an Dell Networking OS image is found, the switch compares that image to the version the chassis currently has loaded.
1 If there is a mismatch, the switch applies the downloaded version and reloads.
*********VALID IMAGE***********
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Bare Metal Provisioning (BMP)