Catalyst 9000系列交换机上的Mac地址表管理器故障排除
简介
本文档介绍如何了解Catalyst 9000系列交换机上的Mac地址表管理器并对其进行故障排除。
先决条件
要求
本文档没有任何特定的要求。
使用的组件
本文档中的信息基于以下软件和硬件版本：
- Cisco IOS® XE 16.x和17.x软件上的Cisco Catalyst 9200、9300、9400、9500非高性能系列交换机
- Cisco IOS® XE 16.x和17.x软件上的Cisco Catalyst 9500高性能9600系列交换机
本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您的网络处于活动状态，请确保您了解所有命令的潜在影响。
背景信息
Mac地址表管理器(MATM)是写入和存储获取的Mac地址的数据库。本文档中概述的两种类型的MATM是：
- IOS MATM（软件）
- FED MATM（硬件）
当终端主机首次将数据包发送到交换机时，它会通过NIF/ASIC并传送到FED中。从这里，FED将新的终端主机信息传送到IOS，以便IOS MATM将该信息写入其数据库，同时将该信息写入FED MATM，如下图所示：
每个MATM的重要性取决于所传递的流量类型：
- 本地交换流量使用FED MATM在硬件（数据平面）中转发数据包
- 控制平面功能，例如LISP（SDA交换矩阵）或EVPN，使用基于IOS MATM构建的设备跟踪数据库
注意：在交换机上创建SVI时，首先在IOS MATM中创建并写入该SVI，然后将其推送到FED MATM进行学习。
术语
| MATM |
Mac地址表管理器 |
| Mac 地址 |
网络上设备的12位唯一硬件标识符 |
| diHandle |
目标索引句柄 |
| pmap_intf |
端口映射接口 |
| NIF |
网络接口 |
| FED |
转发引擎驱动程序 |
| IOS |
网络操作系统 |
| 数据层面 |
在硬件上转发的流量 |
| SISF |
交换机集成安全功能 |
| TCAM |
三重内容可寻址存储器 |
| SVI |
交换机虚拟接口 |
注意：根据平台，CLI有时包含术语“switch”，有时不包含“switch”。（show platform soft fed switch <number|active|standby> matm macTable与show platform soft fed active matm macTable）
配置
没有配置要求。
验证
FED MATM中的动态Mac地址学习
Switch#show platform software fed switch active matm macTable vlan 100 mac 9c54.1631.8bd1 VLAN MAC Type Seq# EC_Bi Flags machandle siHandle riHandle diHandle *a_time *e_time ports Con ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100 9c54.1631.8bd1 0x1 248 0 0 0x7f7490c93bd8 0x7f7490c73d98 0x0 0x7f7490a4e108 300 8 TenGigabitEthernet2/1/1 Yes ======platform hardware details ====== Asic: 0 htm-handle = 0x7f7490c80ce8 MVID = 5 gpn = 1 SI = 0xb6 RI = 0x1a DI = 0x537d DI = 0x537d pmap = 0x00000000 0x00000000 Asic: 1 SI = 0xb6 RI = 0x1a DI = 0x537d DI = 0x537d pmap = 0x00000000 0x10000000 pmap_intf : [TenGigabitEthernet2/1/1]
This is a snippet from the bottom of the output of show platform software fed switch active matm macTable to showcase the classification of Type to help indicate how the Mac Address is being learned on the Switch:
Type: MAT_DYNAMIC_ADDR 0x1 MAT_STATIC_ADDR 0x2 MAT_CPU_ADDR 0x4 MAT_DISCARD_ADDR 0x8 MAT_ALL_VLANS 0x10 MAT_NO_FORWARD 0x20 MAT_IPMULT_ADDR 0x40 MAT_RESYNC 0x80 MAT_DO_NOT_AGE 0x100 MAT_SECURE_ADDR 0x200 MAT_NO_PORT 0x400 MAT_DROP_ADDR 0x800 MAT_DUP_ADDR 0x1000 MAT_NULL_DESTINATION 0x2000 MAT_DOT1X_ADDR 0x4000 MAT_ROUTER_ADDR 0x8000 MAT_WIRELESS_ADDR 0x10000 MAT_SECURE_CFG_ADDR 0x20000 MAT_OPQ_DATA_PRESENT 0x40000 MAT_WIRED_TUNNEL_ADDR 0x80000 MAT_DLR_ADDR 0x100000 MAT_MRP_ADDR 0x200000 MAT_MSRP_ADDR 0x400000 MAT_LISP_LOCAL_ADDR 0x800000 MAT_LISP_REMOTE_ADDR 0x1000000 MAT_VPLS_ADDR 0x2000000 MAT_LISP_GW_ADDR 0x4000000
注意：故障排除通常从检查IOS MATM开始，但在此情况下，FED首先了解它
IOS MATM中的动态Mac地址学习
Switch#show mac address-table address 9c54.1631.8bd1 <--- What IOS Matm sees
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- -----
100 9c54.1631.8bd1 DYNAMIC Te2/1/1 <--- Showcases which vlan, how its learned, and what port interface it is learned on
Total Mac Addresses for this criterion: 1
- 检查硬件编程与ios编程是否匹配是否存在不一致
Switch#show platform software fed switch active matm macTable vlan 100 mac 9c54.1631.8bd1 detail VLAN MAC Type Seq# EC_Bi Flags machandle siHandle riHandle diHandle *a_time *e_time ports Con ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100 9c54.1631.8bd1 0x1 248 0 0 0x7f7490c93bd8 0x7f7490c73d98 0x0 0x7f7490a4e108 300 5 Yes Detailed Resource Information (ASIC_INSTANCE# 0) ---------------------------------------- Number of HTM Entries: 1 Entry 0: (handle 0x7f7490c80ce8) Absolute Index: 6442 Time Stamp: 5 KEY - vlan:5 mac:0x9c5416318bd1 l3_if:0 gpn:125 epoch:0 static:0 flood_en:0 vlan_lead_wless_flood_en: 0 client_home_asic: 0 learning_peerid 0, learning_peerid_valid 0 lvx:1 MASK - vlan:0 mac:0x0 l3_if:0 gpn:0 epoch:0 static:0 flood_en:0 vlan_lead_wless_flood_en: 0 client_home_asic: 0 learning_peerid 0, learning_peerid_valid 0 lvx:0 SRC_AD - need_to_learn:0 lrn_v:0 catchall:0 static_mac:0 chain_ptr_v:0 chain_ptr: 0 static_entry_v:0 auth_state:0 auth_mode:0 auth_behavior_tag:0 traf_m:0 is_src_ce:0 DST_AD - si:0xb6 bridge:0 replicate:0 blk_fwd_o:0 v4_rmac:0 v6_rmac:0 catchall:0 ign_src_lrn:0 port_mask_o:0 afd_cli_f:0 afd_lbl:0 prio:3 dest_mod_idx:0 destined_to_us:0 pv_trunk:0 smr:0 ============================================================== Detailed Resource Information (ASIC_INSTANCE# 0) ---------------------------------------- Station Index (SI) [0xb6] RI = 0x1a DI = 0x537d stationTableGenericLabel = 0 stationFdConstructionLabel = 0x7 lookupSkipIdIndex = 0 rcpServiceId = 0 dejaVuPreCheckEn = 0x1 Replication Bitmap: CD Detailed Resource Information (ASIC_INSTANCE# 1) ---------------------------------------- Station Index (SI) [0xb6] RI = 0x1a DI = 0x537d stationTableGenericLabel = 0 stationFdConstructionLabel = 0x7 lookupSkipIdIndex = 0 rcpServiceId = 0 dejaVuPreCheckEn = 0x1 Replication Bitmap: LD ============================================================== Detailed Resource Information (ASIC_INSTANCE# 0) ---------------------------------------- Destination index = 0x537d pmap = 0x00000000 0x00000000 cmi = 0x0 rcp_pmap = 0x0 al_rsc_cmi CPU Map Index (CMI) [0] ctiLo0 = 0 ctiLo1 = 0 ctiLo2 = 0 cpuQNum0 = 0 cpuQNum1 = 0 cpuQNum2 = 0 npuIndex = 0 stripSeg = 0 copySeg = 0 Detailed Resource Information (ASIC_INSTANCE# 1) <--- Note the ASIC Instance # as it is based on what port interface is being used ---------------------------------------- Destination index = 0x537d pmap = 0x00000000 0x10000000 pmap_intf : [TenGigabitEthernet2/1/1] <--- Port map interface is learned correctly cmi = 0x0 rcp_pmap = 0x0 al_rsc_cmi CPU Map Index (CMI) [0] ctiLo0 = 0 ctiLo1 = 0 ctiLo2 = 0 cpuQNum0 = 0 cpuQNum1 = 0 cpuQNum2 = 0 npuIndex = 0 stripSeg = 0 copySeg = 0 ==============================================================
注意：如果使用active语法为接口运行detailed命令，但该接口位于另一台交换机上，则不会获得任何端口映射接口输出
IOS MATM中的静态Mac地址学习
此示例使用交换机SVI Mac地址展示正确的编程
Switch#show run interface vlan 100 <--- Verify SVI configuration Building configuration... Current configuration : 82 bytes ! interface Vlan100 ip address 192.168.1.2 255.255.255.0 end
Switchk#show interface vlan 100 Vlan100 is up, line protocol is up , Autostate Enabled Hardware is Ethernet SVI, address is 706b.b929.f751 (bia 706b.b929.f751) <--- Mac Address assigned to SVI 100 by the Switch Internet address is 192.168.1.2/24 <snippet>
Switch#show mac address-table address 706b.b929.f751 <--- Verify macTable in IOS is programmed correctly Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 100 706b.b929.f751 STATIC Vl100 Total Mac Addresses for this criterion: 1
FED MATM中的静态Mac地址学习
Switch#show platform software fed switch active matm macTable vlan 100 <--- Verify macTable in Hardware is programmed correctly VLAN MAC Type Seq# EC_Bi Flags machandle siHandle riHandle diHandle *a_time *e_time ports Con ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100 706b.b929.f751 0x8002 0 0 64 0x7fc210e57908 0x7fc210cb7d78 0x0 0x0 0 0 Vlan100 Yes 100 0027.90be.20d1 0x101 192 0 64 0x7fc210cdc058 0x7fc210cd6da8 0x0 0x7fc210ac81f8 0 0 TenGigabitEthernet2/1/2 Yes Total Mac number of addresses:: 2 Summary: Total number of secure addresses:: 0 Total number of drop addresses:: 0 Total number of lisp local addresses:: 0 Total number of lisp remote addresses:: 0 *a_time=aging_time(secs) *e_time=total_elapsed_time(secs) Type: MAT_DYNAMIC_ADDR 0x1 MAT_STATIC_ADDR 0x2 MAT_CPU_ADDR 0x4 MAT_DISCARD_ADDR 0x8 MAT_ALL_VLANS 0x10 MAT_NO_FORWARD 0x20 MAT_IPMULT_ADDR 0x40 MAT_RESYNC 0x80 MAT_DO_NOT_AGE 0x100 MAT_SECURE_ADDR 0x200 MAT_NO_PORT 0x400 MAT_DROP_ADDR 0x800 <--- Note 0x8000 + 0x2 == 0x8002 ---> Routed Address that is Statically assigned on the Switch (SVI) MAT_DUP_ADDR 0x1000 MAT_NULL_DESTINATION 0x2000 MAT_DOT1X_ADDR 0x4000 MAT_ROUTER_ADDR 0x8000 MAT_WIRELESS_ADDR 0x10000 MAT_SECURE_CFG_ADDR 0x20000 MAT_OPQ_DATA_PRESENT 0x40000 MAT_WIRED_TUNNEL_ADDR 0x80000 MAT_DLR_ADDR 0x100000 MAT_MRP_ADDR 0x200000 MAT_MSRP_ADDR 0x400000 MAT_LISP_LOCAL_ADDR 0x800000 MAT_LISP_REMOTE_ADDR 0x1000000 MAT_VPLS_ADDR 0x2000000 MAT_LISP_GW_ADDR 0x4000000
注意：在交换机上创建的SVI没有diHandle，因为它是一个路由地址
MATM中的EVPN Mac地址学习
确定mac预期要学习的VLAN并检验匹配
注意：有关EVPN的详细信息，请参阅BGP EVPN VXLAN配置指南
Switch#show platform software fed switch active matm macTable vlan 201 VLAN MAC Type Seq# EC_Bi Flags machandle siHandle riHandle diHandle *a_time *e_time ports Con ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 201 0006.f601.cd42 0x1 32436 0 0 0x71e058dc3368 0x71e058655018 0x0 0x71e05877c888 300 14 GigabitEthernet1/0/1 Yes 201 0006.f601.cd01 0x1 32437 0 0 0x71e058dae308 0x71e058655018 0x0 0x71e05877c888 300 15 GigabitEthernet1/0/1 Yes 201 0006.f617.ee81 0x1000001 0 0 64 0x71e059191ee8 0x71e058e11468 0x71e058ef0d18 0x0 0 5335175 VTEP 172.16.255.4 adj_id 1376 No
Total Mac number of addresses:: 4 Summary: Total number of secure addresses:: 0 Total number of drop addresses:: 0 Total number of lisp local addresses:: 0 Total number of lisp remote addresses:: 2 <--- Remotely learned addresses from EVPN *a_time=aging_time(secs) *e_time=total_elapsed_time(secs) Type: MAT_DYNAMIC_ADDR 0x1 MAT_STATIC_ADDR 0x2 MAT_CPU_ADDR 0x4 MAT_DISCARD_ADDR 0x8 MAT_ALL_VLANS 0x10 MAT_NO_FORWARD 0x20 MAT_IPMULT_ADDR 0x40 MAT_RESYNC 0x80 MAT_DO_NOT_AGE 0x100 MAT_SECURE_ADDR 0x200 MAT_NO_PORT 0x400 MAT_DROP_ADDR 0x800 MAT_DUP_ADDR 0x1000 MAT_NULL_DESTINATION 0x2000 MAT_DOT1X_ADDR 0x4000 MAT_ROUTER_ADDR 0x8000. <--- Note 0x1000000 + 0x1 == 0x1000001 ---> Mac Address remotely learned Dynamically via EVPN MAT_WIRELESS_ADDR 0x10000 MAT_SECURE_CFG_ADDR 0x20000 MAT_OPQ_DATA_PRESENT 0x40000 MAT_WIRED_TUNNEL_ADDR 0x80000 MAT_DLR_ADDR 0x100000 MAT_MRP_ADDR 0x200000 MAT_MSRP_ADDR 0x400000 MAT_LISP_LOCAL_ADDR 0x800000 MAT_LISP_REMOTE_ADDR 0x1000000 MAT_VPLS_ADDR 0x2000000 MAT_LISP_GW_ADDR 0x4000000
注意：EVPN类型标志使用MAT_LISP_REMOTE_ADDR与LISP Mac Learning相同的表示法
故障排除
网络连接问题
此示例使用2个C9300-48UN的交换机堆叠，其中SVI 100是网络上的L3网关，并且其自己的Mac地址未正确编程，包括：
- 目的设备连接到交换机2的端口
- 源设备连接到交换机1上的端口
- SVI 100是网关
- 没有从源设备到目的设备的连接（ICMP用于测试）
- 如果目的设备连接到交换机1，则连接已恢复
检查目的设备的IP ARP和Mac地址
Switch#show ip arp 192.168.1.3 Protocol Address Age (min) Hardware Addr Type Interface Internet 192.168.1.3 6 9c54.1631.8bd1 ARPA Vlan100 <--- ARP Resolved on Vlan 100 correctly
Switch#show mac add address 9c54.1631.8bd1 Mac Address Table ------------------------------------------- Vlan Mac Address Type Ports ---- ----------- -------- ----- 100 9c54.1631.8bd1 DYNAMIC Te2/1/1 <--- IOS Programmed Destination Mac Address correctly Total Mac Addresses for this criterion: 1
检查连接到目标设备的端口上的出口和入口流量
主要目标是检查入口流量，这可通过EPC 完成，本示例使用ICMP流量
Switch#monitor capture tac interface Te2/1/1 both match any start
<wait some time>
Switch#monitor capture tac stop
Switch#show monitor capture tac buffer brief | i ICMP
908 4.969635 192.168.1.2 -> 192.168.1.3 ICMP 114 Echo (ping) request id=0x0008, seq=0/0, ttl=255 909 4.970165 192.168.1.3 -> 192.168.1.2 ICMP 118 Echo (ping) reply id=0x0008, seq=0/0, ttl=254 (request in 908). <--- Replies are seen ingress on EPC showcasing traffic makes it to Destination Device and it replies correctly 910 4.970425 192.168.1.2 -> 192.168.1.3 ICMP 114 Echo (ping) request id=0x0008, seq=1/256, ttl=255 911 4.970724 192.168.1.3 -> 192.168.1.2 ICMP 118 Echo (ping) reply id=0x0008, seq=1/256, ttl=254 (request in 910) 912 4.970889 192.168.1.2 -> 192.168.1.3 ICMP 114 Echo (ping) request id=0x0008, seq=2/512, ttl=255 913 4.971211 192.168.1.3 -> 192.168.1.2 ICMP 118 Echo (ping) reply id=0x0008, seq=2/512, ttl=254 (request in 912) 914 4.971436 192.168.1.2 -> 192.168.1.3 ICMP 114 Echo (ping) request id=0x0008, seq=3/768, ttl=255 915 4.971558 192.168.1.3 -> 192.168.1.2 ICMP 118 Echo (ping) reply id=0x0008, seq=3/768, ttl=254 (request in 914)
检查返回流量的详细输出
Switch#show monitor capture tac buffer detailed | begin Frame 909
Starting the packet display ........ Press Ctrl + Shift + 6 to exit
Frame 1: 118 bytes on wire (944 bits), 118 bytes captured (944 bits) on interface /tmp/epc_ws/wif_to_ts_pipe, id 0
Interface id: 0 (/tmp/epc_ws/wif_to_ts_pipe)
Interface name: /tmp/epc_ws/wif_to_ts_pipe
Encapsulation type: Ethernet (1)
Arrival Time: Apr 19, 2024 19:14:13.044770000 UTC
[Time shift for this packet: 0.000000000 seconds]
Epoch Time: 1713554053.044770000 seconds
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 118 bytes (944 bits)
Capture Length: 118 bytes (944 bits)
[Frame is marked: False]
[Frame is ignored: False]
[Protocols in frame: eth:ethertype:vlan:ethertype:ip:icmp:data]
Ethernet II, Src: 9c:54:16:31:8b:d1 (9c:54:16:31:8b:d1), Dst: 70:6b:b9:29:f7:51 (70:6b:b9:29:f7:51) <--- Verify this source mac matches the outputs above from the arp entry / macTable for 192.168.1.3
Destination: 70:6b:b9:29:f7:51 (70:6b:b9:29:f7:51) <--- Verify if this DMAC (Destination Mac Address) matches the Gateway (SVI 100)
Address: 70:6b:b9:29:f7:51 (70:6b:b9:29:f7:51)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Source: 9c:54:16:31:8b:d1 (9c:54:16:31:8b:d1)
Address: 9c:54:16:31:8b:d1 (9c:54:16:31:8b:d1)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
Switch#show interface vlan 100
Vlan100 is up, line protocol is up , Autostate Enabled
Hardware is Ethernet SVI, address is 706b.b929.f751 (bia 706b.b929.f751) <--- Matches DMAC of ICMP Reply
Internet address is 192.168.1.4/24
检查SVI 100的Mac地址
Switch#show mac address-table address 706b.b929.f751
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports
---- ----------- -------- ----- <--- IOS does not have SVI 100 Mac Address programmed at all (unexpected)
Switch#show platform software fed switch active matm macTable vlan 100 mac 706b.b929.f751 VLAN MAC Type Seq# EC_Bi Flags machandle siHandle riHandle diHandle *a_time *e_time ports Con ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ 100 706b.b929.f751 0x8002 0 0 64 0x7fc210e57908 0x7fc210cb7d78 0x0 0x0 0 0 Vlan100 Yes ======platform hardware details ====== Asic: 0 <--- Matm on Switch 1 (Active) has the SVI 100 MAC Programmed Correctly htm-handle = 0x7fc210cb9e68 MVID = 5 gpn = 1 SI = 0x2d RI = 0x1 DI = 0x5234 Asic: 1 SI = 0x2d RI = 0x1 DI = 0x5234
注意：当目标设备连接到交换机1时，连接恢复的原因是MATM仍被正确编程为与交换机2进行比较
Switch#show platform software fed switch 2 matm macTable vlan 100 mac 706b.b929.f751 Total Mac number of addresses:: 0 <--- Matm on Switch 2 does not have the SVI 100 MAC Programmed Summary: Total number of secure addresses:: 0 Total number of drop addresses:: 0 Total number of lisp local addresses:: 0 Total number of lisp remote addresses:: 0
可能的连接问题原因
检查MATM硬件资源
如果负责对Mac地址进行编程的交换机硬件资源耗尽，则无法再获知地址
Switch#show platform hardware fed switch active fwd-asic resource tcam utilization
Codes: EM - Exact_Match, I - Input, O - Output, IO - Input & Output, NA - Not Applicable
CAM Utilization for ASIC [0]
Table Subtype Dir Max Used %Used V4 V6 MPLS Other
------------------------------------------------------------------------------------------------------
Mac Address Table EM I 32768 31788 97.01% 0 0 0 31788 <--- Look for 95% or greater values Mac Address Table TCAM I 1024 1019 99.51% 0 0 0 1019
L3 Multicast EM I 8192 0 0.00% 0 0 0 0
L3 Multicast TCAM I 512 9 1.76% 3 6 0 0
L2 Multicast EM I 8192 0 0.00% 0 0 0 0
L2 Multicast TCAM I 512 11 2.15% 3 8 0 0
IP Route Table EM I 24576 3 0.01% 2 0 1 0
IP Route Table TCAM I 8192 19 0.23% 6 10 2 1
QOS ACL TCAM IO 5120 85 1.66% 28 38 0 19
TCAM I 45 0.88% 15 20 0 10
TCAM O 40 0.78% 13 18 0 9
Security ACL TCAM IO 5120 131 2.56% 26 60 0 45
TCAM I 88 1.72% 12 36 0 40
TCAM O 43 0.84% 14 24 0 5
Netflow ACL TCAM I 256 6 2.34% 2 2 0 2
PBR ACL TCAM I 1024 36 3.52% 30 6 0 0
Netflow ACL TCAM O 768 6 0.78% 2 2 0 2
Flow SPAN ACL TCAM IO 1024 13 1.27% 3 6 0 4
TCAM I 5 0.49% 1 2 0 2
TCAM O 8 0.78% 2 4 0 2
Control Plane TCAM I 512 290 56.64% 138 106 0 46
Tunnel Termination TCAM I 512 20 3.91% 8 12 0 0
Lisp Inst Mapping TCAM I 2048 1 0.05% 0 0 0 1
Security Association TCAM I 256 4 1.56% 2 2 0 0
CTS Cell Matrix/VPN
Label EM O 8192 0 0.00% 0 0 0 0
CTS Cell Matrix/VPN
Label TCAM O 512 1 0.20% 0 0 0 1
Client Table EM I 4096 0 0.00% 0 0 0 0
Client Table TCAM I 256 0 0.00% 0 0 0 0
Input Group LE TCAM I 1024 0 0.00% 0 0 0 0
Output Group LE TCAM O 1024 0 0.00% 0 0 0 0
Macsec SPD TCAM I 256 2 0.78% 0 0 0 2
注：有关硬件资源的详细信息，请参阅了解Catalyst 9000交换机上的硬件资源
MATM系统日志错误
| MATM日志消息 |
定义 |
恢复操作 |
| MATM-3-MAX_ENTRIES：交换机1 F0/0：馈送：已达到最大MAC地址数：32768 |
为Mac地址保留的硬件空间已用尽 |
减少交换机上获取的Mac地址数量规模 |
可能的修复方法
选项#1
减少交换机上获知的Mac地址数量
- 可能会出现网络环路，一旦解决了环路，硬件资源就会退出，正常的Mac学习将继续进行
- 网络扩展会发挥作用，并且使用具有更大硬件容量的交换机。(示例：C9300的Mac地址最大为32768，而C9500H的最大为82,000)
选项#2
发生了合理的编程错误。
- 收集所有相关数据
- Show tech-support
- Tracelog存档
- Debug MATM
- 重启设备
- 如果问题仍然存在，请向思科TAC提交支持请求
相关信息
修订历史记录
| 版本 | 发布日期 | 备注 |
|---|---|---|
1.0 |
14-Jun-2024 |
初始版本 |
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