show lacp sys-id show lacp neighbor show lacp counters show interfaces accounting debug lacp [event|packet|fsm|misc] debug condition <condition>
第一个命令输出显示交换机系统ID及其优先级（对于LACP）。
switch#show lacp sys-id 32768, f04a.0206.1900 <-- Your system MAC address
检查LACP邻居的详细信息，例如运行模式、邻居系统 Dev ID及其优先级。
switch#show lacp 1 neighbor
Flags: S - Device is requesting Slow LACPDUs
F - Device is requesting Fast LACPDUs
A - Device is in Active mode P - Device is in Passive mode
Channel group 1 neighbors
LACP port Admin Oper Port Port
Port Flags Priority Dev ID Age key Key Number State
Gi1/0/1 SA 32768 f04a.0205.d600 12s 0x0 0x1 0x102 0x3D <-- Dev ID: Neighbor MAC Address
Gi1/0/2 SA 32768 f04a.0205.d600 24s 0x0 0x1 0x103 0x3D <-- Dev ID: Neighbor MAC Address
Gi1/0/3 SA 32768 f04a.0205.d600 16s 0x0 0x1 0x104 0x3D <-- Dev ID: Neighbor MAC Address
Gi1/0/4 SA 32768 f04a.0205.d600 24s 0x0 0x1 0x105 0x3D <-- Dev ID: Neighbor MAC Address
switch#show int gi1/0/1 accounting
GigabitEthernet1/0/1
Protocol Pkts In Chars In Pkts Out Chars Out
Other 0 0 10677 640620
PAgP 879 78231 891 79299
Spanning Tree 240 12720 85 5100
CDP 2179 936495 2180 937020
DTP 3545 170160 3545 212700
LACP 3102 384648 3127 387748
调试
当没有LACP同步或远程对等体不运行LACP时，会生成系统日志消息。
%ETC-5-L3DONTBNDL2: Gig1/0/1 suspended: LACP currently not enabled on the remote port.
%ETC-5-L3DONTBNDL2: Gig/1/0/1 suspended: LACP currently not enabled on the remote port.
switch#debug lacp event Link Aggregation Control Protocol events debugging is on switch#debug lacp packet Link Aggregation Control Protocol packet debugging is on switch#debug lacp fsm Link Aggregation Control Protocol fsm debugging is on switch#debug lacp misc Link Aggregation Control Protocol miscellaneous debugging is on
switch#show debugging
Packet Infra debugs:
Ip Address Port
------------------------------------------------------|----------
LACP:
Link Aggregation Control Protocol miscellaneous debugging is on
Link Aggregation Control Protocol packet debugging is on
Link Aggregation Control Protocol fsm debugging is on
Link Aggregation Control Protocol events debugging is on
Condition 1: interface Gi1/0/1 (1 flags triggered)
Flags: Gi1/0/1
switch#show logging LACP :lacp_bugpak: Send LACP-PDU packet via Gi1/0/1
LACP : packet size: 124
LACP: pdu: subtype: 1, version: 1
LACP: Act: tlv:1, tlv-len:20, key:0x1, p-pri:0x8000, p:0x102, p-state:0x3D, s-pri:0x8000, s-mac:f04a.0206.1900
LACP: Part: tlv:2, tlv-len:20, key:0x1, p-pri:0x8000, p:0x102, p-state:0xF, s-pri:0x8000, s-mac:f04a.0205.d600
LACP: col-tlv:3, col-tlv-len:16, col-max-d:0x8000
LACP: term-tlv:0 termr-tlv-len:0
LACP: HA: Attempt to sync events -- no action (event type 0x1) LACP :lacp_bugpak: Receive LACP-PDU packet via Gi1/0/1
LACP : packet size: 124
LACP: pdu: subtype: 1, version: 1
LACP: Act: tlv:1, tlv-len:20, key:0x1, p-pri:0x8000, p:0x102, p-state:0x3D, s-pri:0x8000, s-mac:f04a.0205.d600
LACP: Part: tlv:2, tlv-len:20, key:0x1, p-pri:0x8000, p:0x102, p-state:0x3D, s-pri:0x8000, s-mac:f04a.0206.1900
LACP: col-tlv:3, col-tlv-len:16, col-max-d:0x8000
LACP: term-tlv:0 termr-tlv-len:0
LACP: Gi1/0/1 LACP packet received, processing <-- beginning to process LACP PDU
lacp_rx Gi1/0/1 - rx: during state CURRENT, got event 5(recv_lacpdu)
@@@ lacp_rx Gi1/0/1 - rx: CURRENT -> CURRENT
LACP: Gi1/0/1 lacp_action_rx_current entered
LACP: recordPDU Gi1/0/1 LACP PDU Rcvd. Partners oper state is hex F <-- operational state
LACP: Gi1/0/1 partner timeout mode changed to 0
lacp_ptx Gi1/0/1 - ptx: during state FAST_PERIODIC, got event 2(long_timeout)
@@@ lacp_ptx Gi1/0/1 - ptx: FAST_PERIODIC -> SLOW_PERIODIC
LACP: Gi1/0/1 lacp_action_ptx_fast_periodic_exit entered
LACP: lacp_p(Gi1/0/1) timer stopped
LACP: Gi1/0/1 lacp_action_ptx_slow_periodic entered
LACP: timer lacp_p_s(Gi1/0/1) started with interval 30000.
LACP: recordPDU Gi1/0/1 Partner in sync and aggregating <-- peer is in sync
LACP: Gi1/0/1 Partners oper state is hex 3D <-- operational state update
LACP: timer lacp_c_l(Gi1/0/1) started with interval 90000.
LACP: Gi1/0/1 LAG_PARTNER_UP.
LACP: Gi1/0/1 LAG unchanged
lacp_mux Gi1/0/1 - mux: during state COLLECTING_DISTRIBUTING, got event 5(in_sync) (ignored)
lacp_handle_standby_port_internal called, depth = 1
LACP: lacp_handle_standby_port_internal: No Standby port found for LAG 1
lacp_handle_standby_port_internal called, depth = 1
LACP: lacp_handle_standby_port_internal: No Standby port found for LAG 1
lacp_handle_standby_port_internal called, depth = 1
LACP: lacp_handle_standby_port_internal: No Standby port found for LAG 1
LACP: lacp_t(Gi1/0/1) timer stopped
LACP: lacp_t(Gi1/0/1) expired
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/2, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/3, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/4, changed state to up%LINK-3-UPDOWN: Interface Port-channel1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
show pagp neighbor show pagp counters show interfaces accounting
检查PAgP邻居的详细信息，例如操作模式、合作伙伴系统ID、主机名和优先级。
switch#show pagp 1 neighbor
Flags: S - Device is sending Slow hello. C - Device is in Consistent state.
A - Device is in Auto mode. P - Device learns on physical port.
Channel group 1 neighbors
Partner Partner Partner Partner Group
Port Name Device ID Port Age Flags Cap.
Gi1/0/1 switch f04a.0205.d600 Gi1/0/1 16s SC 10001 <-- Dev ID: Neighbor MAC Address
Gi1/0/2 switch f04a.0205.d600 Gi1/0/2 19s SC 10001 <-- Dev ID: Neighbor MAC Address
Gi1/0/3 switch f04a.0205.d600 Gi1/0/3 17s SC 10001 <-- Dev ID: Neighbor MAC Address
Gi1/0/4 switch f04a.0205.d600 Gi1/0/4 15s SC 10001 <-- Dev ID: Neighbor MAC Address
switch#show int gi1/0/1 accounting
GigabitEthernet1/0/1
Protocol Pkts In Chars In Pkts Out Chars Out
Other 0 0 10677 640620
PAgP 879 78231 891 79299
Spanning Tree 240 12720 85 5100
CDP 2179 936495 2180 937020
DTP 3545 170160 3545 212700
LACP 3102 384648 3127 387748
调试
如果发现PAgP协商问题，请启用PAgP debugs以分析原因。
switch#debug pagp event Port Aggregation Protocol events debugging is on switch#debug pagp packet Port Aggregation Protocol packet debugging is on switch#debug pagp fsm Port Aggregation Protocol fsm debugging is on switch#debug pagp misc Port Aggregation Protocol miscellaneous debugging is on
switch#show debugging
Packet Infra debugs:
Ip Address Port
------------------------------------------------------|----------
PAGP:
Port Aggregation Protocol miscellaneous debugging is on
Port Aggregation Protocol packet debugging is on
Port Aggregation Protocol fsm debugging is on
Port Aggregation Protocol events debugging is on
Condition 1: interface Gi1/0/1 (1 flags triggered)
Flags: Gi1/0/1
分析PAgP调试。调试输出显示端口通道接口启动之前的最后一个PAgP帧：
PAgP: Receive information packet via Gi1/0/1, packet size: 89
flags: 5, my device ID: f04a.0205.d600, learn-cap: 2, port-priority: 128, sent-port-ifindex: 9, group-cap: 10001, group-ifindex: 4E
your device ID: f04a.0206.1900, learn-cap: 2, port-priority: 128, sent-port-ifindex: 9, group-cap: 10001, group-ifindex: 4E
partner count: 1, num-tlvs: 2
device name TLV: switch
port name TLV: Gi1/0/1
PAgP: Gi1/0/1 PAgP packet received, processing <-- Processing ingress PAgP frame
PAgP: Gi1/0/1 proved to be bidirectional <--
PAgP: Gi1/0/1 action_b0 is entered
PAgP: Gi1/0/1 Input = Transmission State, V12 Old State = U5 New State = U5
PAgP: Gi1/0/1 action_a6 is entered
PAgP: Gi1/0/1 action_b9 is entered
PAgP: set hello interval from 1000 to 30000 for port Gi1/0/1 <--
PAgP: Gi1/0/1 Input = Transmission State, V10 Old State = U5 New State = U6 PAgP: set partner 0 interval from 3500 to 105000 for port Gi1/0/1
PAgP: Gi1/0/1 Setting hello flag
PAgP: timer pagp_p(Gi1/0/1) started with interval 105000.
PAgP: pagp_i(Gi1/0/1) timer stopped
PAgP: Gi1/0/1 Input = Port State, E5 Old State = S7 New State = S7
PAgP: pagp_h(Gi1/0/1) expired
PAgP: Send information packet via Gi1/0/1, packet size: 89
flags: 5, my device ID: f04a.0206.1900, learn-cap: 2, port-priority: 128, sent-port-ifindex: 9, group-cap: 10001, group-ifindex: 4E
your device ID: f04a.0205.d600, learn-cap: 2, port-priority: 128, sent-port-ifindex: 9, group-cap: 10001, group-ifindex: 4E
partner count: 1, num-tlvs: 2
device name TLV: switch
port name TLV: Gi1/0/1
PAgP: 89 bytes out Gi1/0/1
PAgP: Gi1/0/1 Transmitting information packetPAgP: timer pagp_h(Gi1/0/1) started with interval 30000 <--
%LINK-3-UPDOWN: Interface Port-channel1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
show platform software interface switch <switch number or role> r0 br show platform software fed switch <switch number or role> etherchannel group-mask show platform software fed switch <switch number or role> ifm mappings etherchannel show platform software fed switch <switch number or role> ifm if-id <if ID>
检查端口通道和捆绑接口的ID。
switch#show platform software interface switch active r0 br
Forwarding Manager Interfaces Information
Name ID QFP ID
---------------------------------------------------------------
关注IF ID部分，确保值（十六进制数）与上一命令中观察到的ID（十进制数）等效。
switch#show platform software fed switch active etherchannel 1 group-mask
Group Mask Info
Aggport IIF Id: 000000000000004c <-- IfId Hex 0x4c = 76 decimal
Active Port: : 4
Member Ports
If Name If Id local Group Mask
-----------------------------------------------------------------------
GigabitEthernet1/0/4 000000000000000c true 7777777777777777 <-- IfId Hex 0xc = 12 decimal
GigabitEthernet1/0/3 000000000000000b true bbbbbbbbbbbbbbbb <-- IfId Hex 0xb = 11 decimal
GigabitEthernet1/0/2 000000000000000a true dddddddddddddddd <-- IfId Hex 0xa = 10 decimal
GigabitEthernet1/0/1 0000000000000009 true eeeeeeeeeeeeeeee <-- IfId Hex 0x9 = 10 decimal
monitor capture <capture name> [control-plane|interface
]
BOTH monitor capture <capture name> match mac [any|host <source MAC address>|<source MAC address>][any|host <destinationMAC address>|<destinationMAC address>] monitor capture <capture name> file location flash:<name>.pcap show monitor capture <capture name> parameter show monitor capture <capture name> monitor capture <capture name> start monitor capture <capture name> stop show monitor capture file flash:<name>.pcap [detailed]
注意：在特权模式下输入命令。
设置Wireshark捕获。
提示：如果您希望重点关注特定捆绑接口和/或特定源MAC地址，请调整接口并匹配mac关字。
monitor capture CAP interface GigabitEthernet1/0/1 BOTH monitor capture CAP interface GigabitEthernet1/0/2 BOTH monitor capture CAP interface GigabitEthernet1/0/3 BOTH monitor capture CAP interface GigabitEthernet1/0/4 BOTH monitor capture CAP match mac any host 0180.c200.0002 show monitor capture CAP file location flash:CAP.pcap
注意：捕获上定义的目标MAC地址0180.c200.0002可帮助您过滤LACP帧。
验证Wireshark配置正确：
switch#show mon cap CAP parameter monitor capture CAP interface GigabitEthernet1/0/1 BOTH monitor capture CAP interface GigabitEthernet1/0/2 BOTH monitor capture CAP interface GigabitEthernet1/0/3 BOTH monitor capture CAP interface GigabitEthernet1/0/4 BOTH monitor capture CAP match mac any host 0180.c200.0002 monitor capture CAP file location flash:LACP.pcap
switch#show mon cap CAP
Status Information for Capture CAP
Target Type:
Interface: GigabitEthernet1/0/1, Direction: BOTH
Interface: GigabitEthernet1/0/2, Direction: BOTH
Interface: GigabitEthernet1/0/3, Direction: BOTH
Interface: GigabitEthernet1/0/4, Direction: BOTH
Status : Inactive
Filter Details:
MAC
Source MAC: 0000.0000.0000 mask:ffff.ffff.ffff
Destination MAC: 0180.c200.0002 mask:0000.0000.0000
Buffer Details:
Buffer Type: LINEAR (default)
File Details:
Associated file name: flash:CAP.pcap
Limit Details:
Number of Packets to capture: 0 (no limit)
Packet Capture duration: 0 (no limit)
Packet Size to capture: 0 (no limit)
Packet sampling rate: 0 (no sampling)
启动捕获：
switch#mon cap CAP start Started capture point : CAP
如果不使用LACP速率快速计时器，请在30秒后停止它（至少）：
switch#mon cap CAP stop
Capture statistics collected at software:
Capture duration - 58 seconds
Packets received - 16
Packets dropped - 0
Packets oversized - 0
Bytes dropped in asic - 0
Stopped capture point : CAP
要调试转发信息并跟踪硬件转发平面中的数据包路径，请使用 show platform hardware fed switch
forward interface
命令。此命令模拟用户定义的数据包并从硬件转发平面检索转发信息。根据您在此命令中指定的数据包参数，在入口端口上生成数据包。您还可以提供来自PCAP文件中存储的捕获数据包的完整数据包。
本主题仅详细介绍特定于接口转发的选项，即 show platform hardware fed switch {switch_num|active|standby}forward interface 命令。
show platform hardware fed switch <switch number or role> forward interface <interface ID> <source mac address> <destination mac address> <protocol number | arp | cos | ipv4 | ipv6 | mpls> show platform hardware fed switch <switch number or role> forward interface <interface ID> pcap <pcap file name> number <packet number> data show platform hardware fed switch <switch number or role> forward interface <interface ID> vlan <VLAN ID> <source mac address> <destination mac address> <protocol-number | arp | cos | ipv4 | ipv6 | mpls>
定义平台转发捕获。在这种情况下， CAP.pcap 分析帧1。
switch#show platform hardware fed switch active forward interface gigabitEthernet 1/0/1 pcap flash:CAP.pcap number 1 data
show forward is running in the background. After completion, syslog will be generated.
debug platform hardware fed <switch number or role> capture trigger interface ingress debug platform hardware fed <switch number or role> capture trigger layer2 show platform hardware fed <switch number or role> capture trigger show platform hardware fed <switch number or role> capture status show platform hardware fed <switch number or role> capture summary
debug platform software fed sw active punt packet-capture set-filter <filter> debug platform software fed switch active punt packet-capture start debug platform software fed switch active punt packet-capture stop show platform software fed switch active punt packet-capture status show platform software fed switch active punt packet-capture brief
debug platform software fed sw active inject packet-capture set-filter <filter> debug platform software fed switch active inject packet-capture start debug platform software fed switch active inject packet-capture stop show platform software fed switch active inject packet-capture status show platform software fed switch active inject packet-capture brief
弃用
定义数据包捕获以仅过滤LACP数据包。
switch#debug platform software fed sw active punt packet-capture set-filter "eth.dst==0180.c200.0002" Filter setup successful. Captured packets will be cleared
开始捕获。
switch#debug platform software fed sw active punt packet-capture start Punt packet capturing started.
如果不使用LACP速率快速计时器，请在30秒后停止它（至少）。
switch#debug platform software fed switch active punt packet-capture stop Punt packet capturing stopped. Captured 11 packet(s)
检查FED CPU数据包捕获状态。
switch#show platform software fed switch active punt packet-capture status Punt packet capturing: disabled. Buffer wrapping: disabled Total captured so far: 11 packets. Capture capacity : 4096 packets Capture filter : "eth.dst==0180.c200.0002"
分析FED CPU数据包捕获输出。
switch#show platform software fed switch active punt packet-capture brief
Punt packet capturing: disabled. Buffer wrapping: disabled
Total captured so far: 11 packets. Capture capacity : 4096 packets
Capture filter : "eth.dst==0180.c200.0002"
------ Punt Packet Number: 1, Timestamp: 2023/03/31 00:27:54.141 ------
interface : physical: GigabitEthernet1/0/2[if-id: 0x0000000a], pal: GigabitEthernet1/0/2 [if-id: 0x0000000a] <-- interface that punted the frame
metadata : cause: 96 [Layer2 control protocols], sub-cause: 0, q-no: 1, linktype: MCP_LINK_TYPE_LAYER2 [10] <-- LACP frame was punted due to L2 ctrl protocol to queue 1 (L2 control)
ether hdr : dest mac: 0180.c200.0002, src mac: f04a.0205.d602 <-- source and destination MAC addresses
ether hdr : ethertype: 0x8809
------ Punt Packet Number: 2, Timestamp: 2023/03/31 00:27:58.436 ------
interface : physical: GigabitEthernet1/0/4[if-id: 0x0000000c], pal: GigabitEthernet1/0/4 [if-id: 0x0000000c]
metadata : cause: 96 [Layer2 control protocols], sub-cause: 0, q-no: 1, linktype: MCP_LINK_TYPE_LAYER2 [10]
ether hdr : dest mac: 0180.c200.0002, src mac: f04a.0205.d604
ether hdr : ethertype: 0x8809
------ Punt Packet Number: 3, Timestamp: 2023/03/31 00:28:00.758 ------
interface : physical: GigabitEthernet1/0/1[if-id: 0x00000009], pal: GigabitEthernet1/0/1 [if-id: 0x00000009]
metadata : cause: 96 [Layer2 control protocols], sub-cause: 0, q-no: 1, linktype: MCP_LINK_TYPE_LAYER2 [10]
ether hdr : dest mac: 0180.c200.0002, src mac: f04a.0205.d601
ether hdr : ethertype: 0x8809
------ Punt Packet Number: 4, Timestamp: 2023/03/31 00:28:11.888 ------
interface : physical: GigabitEthernet1/0/3[if-id: 0x0000000b], pal: GigabitEthernet1/0/3 [if-id: 0x0000000b]
metadata : cause: 96 [Layer2 control protocols], sub-cause: 0, q-no: 1, linktype: MCP_LINK_TYPE_LAYER2 [10]
ether hdr : dest mac: 0180.c200.0002, src mac: f04a.0205.d603
ether hdr : ethertype: 0x8809
注入
定义数据包捕获以仅过滤LACP数据包。
switch#debug platform software fed sw active inject packet-capture set-filter "eth.dst==0180.c200.0002" Filter setup successful. Captured packets will be cleared
开始捕获。
switch#debug platform software fed sw active inject packet-capture start Punt packet capturing started.
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