Reference Guide

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 filename, and configuration file 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 filename, and configuration filename are reserved for the switch and
provided in the DHCP reply (one-file read method). The switch receives its IP address, subnet mask,
DHCP server IP, TFTP server address, DNS server IP, bootfile name, and configuration filename from
the DHCP server.
If a DHCP offer has no image path or configuration file path, it is considered to be an invalid BMP
DHCP offer and the offer is ignored. The first DHCP offer with the IP address, Dell Networking OS
image, and configuration file, or the IP address and Dell Networking OS image, or the IP address and
configuration file 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 file server to retrieve the named Dell Networking OS file
and/or the configuration file from the base directory of the server.
a. If you use the bootfile-name option, the file name can be 256 bytes. If a filename field is
specified in the DHCP Offer, the filename can be 128 bytes. The name can be a fully qualified
URL or it can be a file name only.
b. When an Dell Networking OS image is found, the switch compares that image to the version
the chassis currently has loaded.
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Bare Metal Provisioning (BMP)