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Diffstat (limited to 'zh_CN.GB2312/books/handbook/advanced-networking/chapter.sgml')
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diff --git a/zh_CN.GB2312/books/handbook/advanced-networking/chapter.sgml b/zh_CN.GB2312/books/handbook/advanced-networking/chapter.sgml index de06fa594b..e057c16678 100644 --- a/zh_CN.GB2312/books/handbook/advanced-networking/chapter.sgml +++ b/zh_CN.GB2312/books/handbook/advanced-networking/chapter.sgml @@ -2,7 +2,7 @@ The FreeBSD Documentation Project The FreeBSD Chinese Documentation Project - Original revision: 1.398 + Original revision: 1.399 $FreeBSD$ --> @@ -2519,6 +2519,85 @@ bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1 可以使用整个的 <hostid role="netmask">/24</hostid> 地址空间， 而无需划分子网。</para> </sect3> + + <sect3> + <title>SNMP 管理</title> + + <para>网桥接口和 STP 参数能够由 &os; 基本系统的 SNMP + 守护进程进行管理。导出的网桥 MIB 符和 IETF 标准， + 所以任何 SNMP 客户端或管理包都可以被用来接收数据。</para> + + <para>在网桥机器上从<filename>/etc/snmp.config</filename> + 文件中去掉以下这行的注释 + <literal>begemotSnmpdModulePath."bridge" = + "/usr/lib/snmp_bridge.so"</literal> + 并启动 <application>bsnmpd</application> 守护进程。 + 其他的配置选项诸如 community names 和 access lists + 可能也许也需要修改。 参阅 &man.bsnmpd.1; 和 + &man.snmp.bridge.3; 获取更多信息。</para> + + <para>以下的例子中使用了 + <application>Net-SNMP</application> 软件 + (<filename role="package">net-mgmt/net-snmp</filename>) + 来查询一个网桥，当然同样也能够使用port + <filename role="package">net-mgmt/bsnmptools</filename>。 + 在 SNMP 客户端 <application>Net-SNMP</application> + 的配置文件 <filename>$HOME/.snmp/snmp.conf</filename> 中 + 加入以下几行来导入网桥的 MIB 定义：</para> + + <programlisting>mibdirs +/usr/share/snmp/mibs +mibs +BRIDGE-MIB:RSTP-MIB:BEGEMOT-MIB:BEGEMOT-BRIDGE-MIB</programlisting> + + <para>通过 IETF BRIDGE-MIB(RFC4188) 监测一个单独的网桥</para> + + <screen>&prompt.user; <userinput>snmpwalk -v 2c -c public bridge1.example.com mib-2.dot1dBridge</userinput> +BRIDGE-MIB::dot1dBaseBridgeAddress.0 = STRING: 66:fb:9b:6e:5c:44 +BRIDGE-MIB::dot1dBaseNumPorts.0 = INTEGER: 1 ports +BRIDGE-MIB::dot1dStpTimeSinceTopologyChange.0 = Timeticks: (189959) 0:31:39.59 centi-seconds +BRIDGE-MIB::dot1dStpTopChanges.0 = Counter32: 2 +BRIDGE-MIB::dot1dStpDesignatedRoot.0 = Hex-STRING: 80 00 00 01 02 4B D4 50 +... +BRIDGE-MIB::dot1dStpPortState.3 = INTEGER: forwarding(5) +BRIDGE-MIB::dot1dStpPortEnable.3 = INTEGER: enabled(1) +BRIDGE-MIB::dot1dStpPortPathCost.3 = INTEGER: 200000 +BRIDGE-MIB::dot1dStpPortDesignatedRoot.3 = Hex-STRING: 80 00 00 01 02 4B D4 50 +BRIDGE-MIB::dot1dStpPortDesignatedCost.3 = INTEGER: 0 +BRIDGE-MIB::dot1dStpPortDesignatedBridge.3 = Hex-STRING: 80 00 00 01 02 4B D4 50 +BRIDGE-MIB::dot1dStpPortDesignatedPort.3 = Hex-STRING: 03 80 +BRIDGE-MIB::dot1dStpPortForwardTransitions.3 = Counter32: 1 +RSTP-MIB::dot1dStpVersion.0 = INTEGER: rstp(2)</screen> + + <para><literal>dot1dStpTopChanges.0</literal>的值为2 + 意味着 STP 网桥拓扑改变了2次，拓扑的改变表示1个或多个 + 网络中的连接改变或失效并且有一个新树生成。 + <literal>dot1dStpTimeSinceTopologyChange.0</literal> + 的值则能够显示这是何时改变的。</para> + + <para>监测多个网桥接口可以使用 private + BEGEMOT-BRIDGE-MIB：</para> + + <screen>&prompt.user; <userinput>snmpwalk -v 2c -c public bridge1.example.com</userinput> +enterprises.fokus.begemot.begemotBridge +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseName."bridge0" = STRING: bridge0 +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseName."bridge2" = STRING: bridge2 +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseAddress."bridge0" = STRING: e:ce:3b:5a:9e:13 +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseAddress."bridge2" = STRING: 12:5e:4d:74:d:fc +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseNumPorts."bridge0" = INTEGER: 1 +BEGEMOT-BRIDGE-MIB::begemotBridgeBaseNumPorts."bridge2" = INTEGER: 1 +... +BEGEMOT-BRIDGE-MIB::begemotBridgeStpTimeSinceTopologyChange."bridge0" = Timeticks: (116927) 0:19:29.27 centi-seconds +BEGEMOT-BRIDGE-MIB::begemotBridgeStpTimeSinceTopologyChange."bridge2" = Timeticks: (82773) 0:13:47.73 centi-seconds +BEGEMOT-BRIDGE-MIB::begemotBridgeStpTopChanges."bridge0" = Counter32: 1 +BEGEMOT-BRIDGE-MIB::begemotBridgeStpTopChanges."bridge2" = Counter32: 1 +BEGEMOT-BRIDGE-MIB::begemotBridgeStpDesignatedRoot."bridge0" = Hex-STRING: 80 00 00 40 95 30 5E 31 +BEGEMOT-BRIDGE-MIB::begemotBridgeStpDesignatedRoot."bridge2" = Hex-STRING: 80 00 00 50 8B B8 C6 A9</screen> + + <para>通过 <literal>mib-2.dot1dBridge</literal> + 子树改变正在被监测的网桥接口：</para> + + <screen>&prompt.user; <userinput>snmpset -v 2c -c private bridge1.example.com</userinput> +BEGEMOT-BRIDGE-MIB::begemotBridgeDefaultBridgeIf.0 s bridge2</screen> + </sect3> </sect2> </sect1> |