遇到一个奇怪的问题，用作核心交换机的Cisco 3850。 交通堵塞交换机上的所有端口。 在调查了更多之后，看起来CAM表格没有更新，除了内置的地址之外，它是空的。
使用Cacti来监视接口，我可以看到每个端口的大量出站stream量，而不关联任何其他端口上的入站stream量。 我build立了一个监控端口，用wireshark观察了交通情况，我看到的交通绝对不应该在那个港口。
似乎没有任何生成树问题，我可以识别。 我会一点一点地closures上行链路，以便testing。
我仍然很困惑，为什么交换机没有填充mac地址表，有足够的stream量，我想它现在已经更新了。
Output of 'show mac address-table' Vlan Mac Address Type Ports ---- ----------- -------- ----- All 0100.0ccc.cccc STATIC CPU All 0100.0ccc.cccd STATIC CPU All 0100.0ccc.ccce STATIC CPU All 0180.c200.0000 STATIC CPU All 0180.c200.0001 STATIC CPU All 0180.c200.0002 STATIC CPU All 0180.c200.0003 STATIC CPU All 0180.c200.0004 STATIC CPU All 0180.c200.0005 STATIC CPU All 0180.c200.0006 STATIC CPU All 0180.c200.0007 STATIC CPU All 0180.c200.0008 STATIC CPU All 0180.c200.0009 STATIC CPU All 0180.c200.000a STATIC CPU All 0180.c200.000b STATIC CPU All 0180.c200.000c STATIC CPU All 0180.c200.000d STATIC CPU All 0180.c200.000e STATIC CPU All 0180.c200.000f STATIC CPU All 0180.c200.0010 STATIC CPU All ffff.ffff.ffff STATIC CPU 1 dca5.f433.1bc7 STATIC Vl1 10 dca5.f433.1bc6 STATIC Vl10 30 dca5.f433.1be5 STATIC Vl30 40 dca5.f433.1be4 STATIC Vl40 50 dca5.f433.1be8 STATIC Vl50 20 dca5.f433.1bd6 STATIC Vl20 15 dca5.f433.1bd4 STATIC Vl15 Total Mac Addresses for this criterion: 28 'show mac address-table count'的输出
Mac Entries for Vlan 1: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 10: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 30: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 40: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 50: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 20: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Mac Entries for Vlan 99: --------------------------- Dynamic Address Count : 0 Static Address Count : 0 Total Mac Addresses : 0 Mac Entries for Vlan 15: --------------------------- Dynamic Address Count : 0 Static Address Count : 1 Total Mac Addresses : 1 Total Mac Address Space Available: 32752
sh arp摘要的输出
Total number of entries in the ARP table: 424. Total number of Dynamic ARP entries: 412. Total number of Incomplete ARP entries: 3. Total number of Interface ARP entries: 9. Total number of Static ARP entries: 0. Total number of Alias ARP entries: 0. Total number of Simple Application ARP entries: 0. Total number of Application Alias ARP entries: 0. Total number of Application Timer ARP entries: 0. Interface Entry Count Vlan15 2 GigabitEthernet1/0/24 4 Vlan20 124 LIIN0 1 Vlan40 40 Vlan30 28 Vlan10 222 GigabitEthernet1/0/1 3
超级困惑在这里！ 有任何想法吗？