OS6860(E)_AOS_8.1.1.R01_Switch_Management_Guide

Recommendations

Info

NTP Overview Configuring Network Time Protocol (NTP) • Peer associations should only be configured between servers at the same stratum level. Higher Strata should configure lower Strata, not the reverse. • It is inadvisable to configure time servers in a domain to a single time source. Doing so invites common points of failure. Note. NTP does not support year date values greater than 2035 (the reasons are documented in RFC 1305 in the data format section). This should not be a problem (until the year 2035) as setting the date this far in advance runs counter to the administrative intention of running NTP. Authentication NTP is designed to use MD5 encryption authentication to prevent outside influence upon NTP timestamp information. This is done by using a key file. The key file is loaded into the switch memory, and consists of a text file that lists key identifiers that correspond to particular NTP entities. If authentication is enabled on an NTP switch, any NTP message sent to the switch must contain the correct key ID in the message packet to use in decryption. Likewise, any message sent from the authentication enabled switch will not be readable unless the receiving NTP entity possesses the correct key ID. The key file is a text (.txt) file that contains a list of keys that are used to authenticate NTP servers. Key files are created by a system administrator independent of the NTP protocol, and then placed in the switch memory when the switch boots. An example of a key file is shown below: 2 M RIrop8KPPvQvYotM # md5 key as an ASCII random string 14 M sundial # md5 key as an ASCII string In a key file, the first token is the key number ID, the second is the key format, and the third is the key itself. (The text following a “#” is not counted as part of the key, and is used merely for description.) The key format indicates an MD5 key written as a 1 to 31 character ASCII string with each character standing for a key octet. The key file (with identical MD5 keys) must be located on both the local NTP client and the client’s server. page 11-8 OmniSwitch AOS Release 8 Switch Management Guide May 2014
Configuring Network Time Protocol (NTP) Configuring NTP Configuring NTP The following sections detail the various commands used to configure and view the NTP client software in an OmniSwitch. Configuring the OmniSwitch as a Client The NTP software is disabled on the switch by default. To activate the switch as an NTP client, enter the ntp client command as shown: -> ntp client admin-status enable This sets the switch to act as an NTP client in the passive mode, meaning the client will receive updates from a designated NTP server. To disable the NTP software, enter the ntp client command as shown: -> ntp client admin-status disable Setting the Client to Broadcast Mode It is possible to configure an NTP client to operate in the broadcast mode. Broadcast mode specifies that a client switch listens on all interfaces for server broadcast timestamp information. It uses these messages to update its time. To set an OmniSwitch to operate in the broadcast mode, enter the ntp broadcast-client command as shown: -> ntp broadcast-client enable A client in the broadcast mode does not need to have a specified server. Setting the Broadcast Delay When set to the broadcast mode, a client needs to advertise a broadcast delay. The broadcast mode is intended for operation on networks with numerous workstations and where the highest accuracy is not required. In a typical scenario, one or more time servers on the network, broadcast NTP messages, which are received by NTP hosts. The correct time is determined from an NTP message based on a pre-configured latency or broadcast delay in the order of a few milliseconds. To set the broadcast delay, enter the ntp broadcast-delay command as shown: -> ntp broadcast-delay 1000 OmniSwitch AOS Release 8 Switch Management Guide May 2014 page 11-9
Page 1 and 2:
Part No. 060391-10, Rev. A May 2014
Page 3 and 4:
Contents About This Guide .........
Page 5 and 6:
Contents Using the Switch as an FTP
Page 7 and 8:
Contents Account and Password Polic
Page 9 and 10:
Contents Authentication Trap ......
Page 11 and 12:
Contents Firmware Upgrade Files ...
Page 13 and 14:
About This Guide This OmniSwitch AO
Page 15 and 16:
About This Guide Documentation Road
Page 17 and 18:
About This Guide Related Documentat
Page 19 and 20:
1 Logging Into the Switch Logging i
Page 21 and 22:
Logging Into the Switch Quick Steps
Page 23 and 24:
Logging Into the Switch Overview of
Page 25 and 26:
Logging Into the Switch Accessing t
Page 27 and 28:
Logging Into the Switch Setting the
Page 29 and 30:
Logging Into the Switch Using Secur
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Logging Into the Switch Modifying t
Page 37 and 38:
Logging Into the Switch Enabling th
Page 39 and 40:
Logging Into the Switch Enabling th
Page 41 and 42:
2 Managing System Files This chapte
Page 43 and 44:
Managing System Files Switch Admini
Page 45 and 46:
Managing System Files File and Dire
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Managing System Files Loading Softw
Page 55 and 56:
Managing System Files Loading Softw
Page 57 and 58:
Managing System Files Setting the S
Page 59 and 60:
Managing System Files Setting the S
Page 61 and 62:
3 Managing CMM Directory Content Th
Page 63 and 64:
Managing CMM Directory Content CMM
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Managing CMM Directory Content Mana
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Managing CMM Directory Content Usin
Page 77 and 78:
4 Using the CLI Alcatel-Lucent’s
Page 79 and 80:
Using the CLI Command Entry Rules a
Page 81 and 82:
Using the CLI Command Help -> sh vl
Page 83 and 84:
Using the CLI Logging CLI Commands
Page 85 and 86:
Using the CLI Customizing the Scree
Page 87 and 88:
5 Working With Configuration Files
Page 89 and 90:
Working With Configuration Files Tu
Page 91 and 92:
Working With Configuration Files Qu
Page 93 and 94:
Working With Configuration Files Co
Page 95 and 96:
Working With Configuration Files Cr
Page 97 and 98:
Working With Configuration Files Cr
Page 99 and 100:
6 Managing Switch User Accounts Swi
Page 101 and 102:
Managing Switch User Accounts User
Page 103 and 104:
Managing Switch User Accounts Overv
Page 105 and 106:
Managing Switch User Accounts Overv
Page 107 and 108:
Managing Switch User Accounts Creat
Page 109 and 110:
Managing Switch User Accounts Confi
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Managing Switch User Accounts Setti
Page 117 and 118:
Managing Switch User Accounts Multi
Page 119 and 120:
7 Managing Switch Security Switch s
Page 121 and 122:
Managing Switch Security Switch Sec
Page 123 and 124:
Managing Switch Security Authentica
Page 125 and 126:
Managing Switch Security Quick Step
Page 127 and 128:
Managing Switch Security Setting Up
Page 129 and 130:
Managing Switch Security Configurin
Page 131 and 132:
8 Using WebView The switch can be m
Page 133 and 134:
Using WebView WebView CLI Commands
Page 135 and 136:
Using WebView WebView Overview Conf
Page 137 and 138: 9 Using SNMP The Simple Network Man
Page 139 and 140: Using SNMP Quick Steps for Setting
Page 141 and 142: Using SNMP Quick Steps for Setting
Page 143 and 144: Using SNMP SNMP Overview Using SNMP
Page 145 and 146: Using SNMP Using SNMP For Switch Se
Page 147 and 148: Using SNMP Using SNMP For Switch Se
Page 149 and 150: Using SNMP Working with SNMP Traps
Page 151 and 152: Using SNMP Verifying the SNMP Confi
Page 153 and 154: 10 Web Services, CLI Scripting, and
Page 155 and 156: Web Services, CLI Scripting, and Op
Page 181 and 182: 11 Configuring Network Time Protoco
Page 183 and 184: Configuring Network Time Protocol (
Page 187: Configuring Network Time Protocol (
Page 195 and 196: 12 Managing Automatic Remote Config
Page 197 and 198: Managing Automatic Remote Configura
Page 219 and 220: 13 Configuring Virtual Chassis A Vi
Page 221 and 222: Configuring Virtual Chassis Virtual
Page 223 and 224: Configuring Virtual Chassis Quick S
Page 227 and 228: Configuring Virtual Chassis Managin
Page 229 and 230: Configuring Virtual Chassis Managin
Page 235 and 236: Configuring Virtual Chassis Interac
Page 237 and 238: Configuring Virtual Chassis Configu
Page 239 and 240:
Configuring Virtual Chassis Configu
Page 241 and 242:
Configuring Virtual Chassis Display
Page 243 and 244:
A Software License and Copyright St
Page 245 and 246:
Alcatel-Lucent License Agreement Al
Page 247 and 248:
B SNMP Trap Information This append
Page 249 and 250:
SNMP Traps Table No. Trap Name Obje
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Index Symbols !! command 4-6 A aaa
Page 295 and 296:
Index Network Time Protocol see NTP
show all

OS6860(E)_AOS_8.1.1.R01_Switch_Management_Guide

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?