Dell PowerEdge M420 Dell PowerConnect M8024-k User's Configuration Guide - Page 282
What Configuration Is Required for Plug-In Modules?, no slot, clear, config
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Time sources are established by Stratums. Stratums define the accuracy of the reference clock. The higher the stratum (where zero is the highest), the more accurate the clock. The switch is at a stratum that is one lower than its time source. For example, if the SNTP server in an internal network is a Stratum 3 device, the switch is a Stratum 4 device. You can configure the switch to request the time from an SNTP server on the network, or you can allow the switch to receive SNTP broadcasts. Requesting the time from a unicast SNTP server is more secure. Use this method if you know the IP address of the SNTP server on your network. If you allow the switch to receive SNTP broadcasts, any clock synchronization information is accepted, even if it has not been requested by the device. This method is less secure than polling a specified SNTP server. To increase security, you can require authentication between the configured SNTP server and the SNTP client on the switch. Authentication is provided by Message Digest 5 (MD5). MD5 verifies the integrity of the communication and authenticates the origin of the communication. What Configuration Is Required for Plug-In Modules? The switch supports several different plug-in modules (also known as cards) for the expansion slots located on the back of the switch. For information about the slots and the supported modules, see "PowerConnect M6220, M6348, M8024, and M8024-k Front Panel" on page 83. You can preconfigure the card type prior to inserting it into the switch. Hot-swap support is available for plug-in modules, which means the switch does not require a reboot when you insert or remove cards. However, the switch does require a reboot to change the role of the ports on a CX-4 module from stacking to Ethernet or vice-versa. The CX-4 modules will operate in the mode for which they are configured. All other plug-in modules will default to Ethernet mode upon rebooting the switch. Before inserting a new module into the expansion slot, issue a no slot or clear config command from the CLI so that the switch can recognize the new module. 282 Managing General System Settings
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1,189
-
1,190
-
1,191
-
1,192
-
1,193
-
1,194
-
1,195
-
1,196
-
1,197
-
1,198
-
1,199
-
1,200
-
1,201
-
1,202
-
1,203
-
1,204
-
1,205
-
1,206
-
1,207
-
1,208
-
1,209
-
1,210
-
1,211
-
1,212
-
1,213
-
1,214
-
1,215
-
1,216
-
1,217
-
1,218
-
1,219
-
1,220
-
1,221
-
1,222
-
1,223
-
1,224
-
1,225
-
1,226
-
1,227
-
1,228
-
1,229
-
1,230
-
1,231
-
1,232
-
1,233
-
1,234
-
1,235
-
1,236
-
1,237
-
1,238
-
1,239
-
1,240
-
1,241
-
1,242
-
1,243
-
1,244
-
1,245
-
1,246