Cisco
cisco 2900xl - SNMP - 獲取連接到介面的設備的 MAC 地址
基本上我想做的是找出插入交換機介面的設備的mac地址是什麼（例如FastEthernet0 / 1）
通過閱讀交換機文件，我發現我可以在其上配置 snmp 陷阱，以使其通知交換機通過使用命令檢測到的任何新 MAC 地址
snmp-server 啟用陷阱 mac-notifiction
但由於某種原因，我的交換機不支持此功能。我看到的唯一選擇是
CORE_SWITCH(config)#snmp-server enable traps ? c2900 Enable SNMP c2900 traps cluster Enable Cluster traps config Enable SNMP config traps entity Enable SNMP entity traps hsrp Enable SNMP HSRP traps snmp Enable SNMP traps vlan-membership Enable VLAN Membership traps vtp Enable SNMP VTP traps <cr>所以另一種方法是讓我在網關上執行 cronjon 以使用 snmp 定期輪詢交換機以獲取新的 mac 地址
我到處尋找，但似乎找不到可以為我提供此資訊的 OID。
我能得到的任何幫助都會非常感激！
這是我的交換機上“顯示版本”的輸出
Cisco Internetwork Operating System Software IOS (tm) C2900XL Software (C2900XL-C3H2S-M), Version 12.0(5.4)WC(1), MAINTENANCE INTERIM SOFTWARE Copyright (c) 1986-2001 by cisco Systems, Inc. Compiled Tue 10-Jul-01 11:52 by devgoyal Image text-base: 0x00003000, data-base: 0x00333CD8 ROM: Bootstrap program is C2900XL boot loader CORE_SWITCH uptime is 1 hour, 24 minutes System returned to ROM by power-on System image file is "flash:c2900XL-c3h2s-mz.120-5.4.WC.1.bin" cisco WS-C2912-XL (PowerPC403GA) processor (revision 0x11) with 8192K/1024K bytes of memory. Processor board ID FAB0409X1WS, with hardware revision 0x01 Last reset from power-on Processor is running Enterprise Edition Software Cluster command switch capable Cluster member switch capable 12 FastEthernet/IEEE 802.3 interface(s) 32K bytes of flash-simulated non-volatile configuration memory. Base ethernet MAC Address: 00:01:42:D0:67:00 Motherboard assembly number: 73-3397-08 Power supply part number: 34-0834-01 Motherboard serial number: FAB040843G4 Power supply serial number: DAB05030HR8 Model revision number: A0 Motherboard revision number: C0 Model number: WS-C2912-XL-EN System serial number: FAB0409X1WS Configuration register is 0xF謝謝，-ankit
我不確定 2900/IOS 12.0 是否支持它，但您可以嘗試瀏覽 dot1dTpFdbPort (.1.3.6.1.2.1.17.4.3.1.2) 您需要使用特殊的社區字元串，包括您想要的 vlan獲取mac地址表：community@vlan_number 所以如果你的交換機是1.2.3.4，使用community snmpro並且有vlan 30，試試這個：
snmpwalk -v2c -c snmpro@30 1.2.3.4 1.3.6.1.2.1.17.4.3.1.2
半徑，感謝您為我指明正確的方向。根據您的建議搜尋了一下，我想我現在有了。
對於其他可能需要它的人，這就是程序….
1. get the mac address detected on a vlan (1 in this example) snmpwalk -c public@1 -v2c 10.1.1.10 1.3.6.1.2.1.17.4.3.1.1 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.0 = Hex-STRING: 00 01 42 D0 67 00 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.1 = Hex-STRING: 00 01 42 D0 67 01 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.2 = Hex-STRING: 00 01 42 D0 67 02 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.3 = Hex-STRING: 00 01 42 D0 67 03 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.4 = Hex-STRING: 00 01 42 D0 67 04 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.5 = Hex-STRING: 00 01 42 D0 67 05 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.6 = Hex-STRING: 00 01 42 D0 67 06 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.7 = Hex-STRING: 00 01 42 D0 67 07 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.8 = Hex-STRING: 00 01 42 D0 67 08 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.9 = Hex-STRING: 00 01 42 D0 67 09 SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.10 = Hex-STRING: 00 01 42 D0 67 0A SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.11 = Hex-STRING: 00 01 42 D0 67 0B SNMPv2-SMI::mib-2.17.4.3.1.1.0.1.66.208.103.12 = Hex-STRING: 00 01 42 D0 67 0C SNMPv2-SMI::mib-2.17.4.3.1.1.0.30.236.196.143.130 = Hex-STRING: 00 1E EC C4 8F 82 SNMPv2-SMI::mib-2.17.4.3.1.1.0.80.191.232.146.174 = Hex-STRING: 00 50 BF E8 92 AE 2. get the bridge port number for each vlan snmpwalk -c public@1 -v2c 10.1.1.10 1.3.6.1.2.1.17.4.3.1.2 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.0 = INTEGER: 31 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.1 = INTEGER: 13 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.2 = INTEGER: 14 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.3 = INTEGER: 15 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.4 = INTEGER: 16 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.5 = INTEGER: 17 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.6 = INTEGER: 18 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.7 = INTEGER: 19 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.8 = INTEGER: 20 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.9 = INTEGER: 22 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.10 = INTEGER: 23 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.11 = INTEGER: 24 SNMPv2-SMI::mib-2.17.4.3.1.2.0.1.66.208.103.12 = INTEGER: 25 SNMPv2-SMI::mib-2.17.4.3.1.2.0.30.236.196.143.130 = INTEGER: 15 SNMPv2-SMI::mib-2.17.4.3.1.2.0.80.191.232.146.174 = INTEGER: 13 SNMPv2-SMI::mib-2.17.4.3.1.2.255.255.255.255.255.255 = INTEGER: 0 3. get bridge port number to ifindex mapping snmpwalk -c public@1 -v2c 10.1.1.10 1.3.6.1.2.1.17.1.4.1.2 SNMPv2-SMI::mib-2.17.1.4.1.2.13 = INTEGER: 2 SNMPv2-SMI::mib-2.17.1.4.1.2.14 = INTEGER: 3 SNMPv2-SMI::mib-2.17.1.4.1.2.15 = INTEGER: 4 SNMPv2-SMI::mib-2.17.1.4.1.2.16 = INTEGER: 5 SNMPv2-SMI::mib-2.17.1.4.1.2.17 = INTEGER: 6 SNMPv2-SMI::mib-2.17.1.4.1.2.18 = INTEGER: 7 SNMPv2-SMI::mib-2.17.1.4.1.2.19 = INTEGER: 8 SNMPv2-SMI::mib-2.17.1.4.1.2.20 = INTEGER: 9 SNMPv2-SMI::mib-2.17.1.4.1.2.22 = INTEGER: 10 SNMPv2-SMI::mib-2.17.1.4.1.2.23 = INTEGER: 11 SNMPv2-SMI::mib-2.17.1.4.1.2.24 = INTEGER: 12 SNMPv2-SMI::mib-2.17.1.4.1.2.25 = INTEGER: 13 4. get the ifname snmpwalk -c public@1 -v2c 10.1.1.10 1.3.6.1.2.1.31.1.1.1.1 IF-MIB::ifName.1 = STRING: VL1 IF-MIB::ifName.2 = STRING: Fa0/1 IF-MIB::ifName.3 = STRING: Fa0/2 IF-MIB::ifName.4 = STRING: Fa0/3 IF-MIB::ifName.5 = STRING: Fa0/4 IF-MIB::ifName.6 = STRING: Fa0/5 IF-MIB::ifName.7 = STRING: Fa0/6 IF-MIB::ifName.8 = STRING: Fa0/7 IF-MIB::ifName.9 = STRING: Fa0/8 IF-MIB::ifName.10 = STRING: Fa0/9 IF-MIB::ifName.11 = STRING: Fa0/10 IF-MIB::ifName.12 = STRING: Fa0/11 IF-MIB::ifName.13 = STRING: Fa0/12 IF-MIB::ifName.14 = STRING: Nu0所以在這種情況下，vlan 1 上的 2 個 mac 地址位於介面 Fa0/1 和 Fa0/3 上