本帖最后由 iosvip@163.com 于 2018-11-23 00:26 编辑
问题现象：C2960L交换机生成树状态正常，但ping该设备的管理地址或从该设备ping其他设备或终端转发时延大。
有劳各位大咖，鼎力支持！为谢！
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.75, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 152/160/178 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.70, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 160/371/1177 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.87, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
基础信息及问题描述，见如下图示：
一、A1交换机配置信息
1、STP信息
A1#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 8292 (priority 8192 sys-id-ext 100)
Address 001d.7172.c700
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi2/6 Desg FWD 4 128.134 P2p
Gi2/7 Desg FWD 4 128.135 P2p
Gi2/8 Desg FWD 4 128.136 P2p
Gi2/9 Desg FWD 4 128.137 P2p
Gi2/10 Desg FWD 4 128.138 P2p
Gi2/11 Desg FWD 4 128.139 P2p
Gi2/14 Desg FWD 4 128.142 P2p
Po1 Desg FWD 3 128.1665 P2p
2、互联端口配置信息
interface GigabitEthernet2/7
description A3-G0/1
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 100
switchport mode trunk
ip arp inspection trust
logging event link-status
spanning-tree guard root
ip dhcp snooping trust
interface GigabitEthernet2/14 //至A2交换机G0/1
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
logging event link-status
spanning-tree guard root
ip dhcp snooping trust
二、A2交换机配置信息
1、STP信息
A2#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 4
Port 1 (GigabitEthernet0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 0025.4691.f380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/1 Root FWD 4 128.1 P2p
Gi0/2 Desg FWD 4 128.2 P2p
Fa0/7 Desg FWD 19 128.9 P2p Edge
Fa0/10 Desg FWD 19 128.12 P2p Edge
2、互联端口配置信息
interface GigabitEthernet0/1
description Link_A1-G2/14
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
interface GigabitEthernet0/2
description Link_A5-G0/3
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
三、A3交换机配置信息
1、STP信息
A3#sh spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 4
Port 1 (GigabitEthernet0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address b414.894e.ca00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/1 Root FWD 4 128.1 P2p
Gi0/2 Desg FWD 4 128.2 P2p
Fa0/24 Desg FWD 19 128.26 P2p
2、互联端口配置信息
interface GigabitEthernet0/1
description con_A1_1
switchport trunk encapsulation dot1q
switchport trunk native vlan 100
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
四、A5交换机配置信息
1、STP信息
A5#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 8
Port 52 (GigabitEthernet0/52)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 700b.4fb7.b580
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/49 Altn BLK 4 128.49 P2p
Gi0/52 Root FWD 4 128.52 P2p
2、互联端口配置信息
interface GigabitEthernet0/49
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
interface GigabitEthernet0/52
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
3、交换机Debug信息(更多详情，见附件配置文件，有采集show tech)
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93, len 124, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93, len 124, local feature, Auth Proxy(16), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Nov 19 2018 13:11:44 beijing: IP: tableid=0, s=10.32.12.87 (local), d=10.32.106.93 (Vlan100), routed via RIB
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93 (Vlan100), len 124, output feature, Check hwidb(105), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
debug spanning-tree bpdu
Nov 19 2018 13:38:03 beijing: STP(201) port Gi0/49 supersedes 0
Nov 19 2018 13:38:03 beijing: STP: VLAN0100 rx BPDU: config protocol = ieee, packet from GigabitEthernet0/52 , linktype SSTP , enctype 3, encsize 22
Nov 19 2018 13:38:03 beijing: STP: enc 01 00 0C CC CC CD 00 25 46 91 F3 82 00 32 AA AA 03 00 00 0C 01 0B
Nov 19 2018 13:38:03 beijing: STP: Data 00000000002064001D7172C70000000004806400254691F38080020100140002000F00
Nov 19 2018 13:38:03 beijing: STP: VLAN0100 Gi0/52:0000 00 00 00 2064001D7172C700 00000004 806400254691F380 8002 0100 1400 0200 0F00
Nov 19 2018 13:38:03 beijing: STP(100) port Gi0/52 supersedes 0
Nov 19 2018 13:38:03 beijing: STP: VLAN0300 rx BPDU: config protocol = ieee, packet from GigabitEthernet0/49 , linktype SSTP , enctype 3, encsize 22
Nov 19 2018 13:38:03 beijing: STP: enc 01 00 0C CC CC CD B4 14 89 4E CA 02 00 32 AA AA 03 00 00 0C 01 0B
Nov 19 2018 13:38:03 beijing: STP: Data 0000000000212C001D7172C70000000004812CB414894ECA0080020100140002000F00
Nov 19 2018 13:38:03 beijing: STP: VLAN0300 Gi0/49:0000 00 00 00 212C001D7172C700 00000004 812CB414894ECA00 8002 0100 1400 0200
问题现象：C2960L交换机生成树状态正常，但ping该设备的管理地址或从该设备ping其他设备或终端转发时延大。
有劳各位大咖，鼎力支持！为谢！
A5#ping 10.32.12.75
//A3交换机Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.75, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 152/160/178 ms
A5#ping 10.32.12.70
//A2交换机Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.70, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 160/371/1177 ms
A5#ping 10.32.12.87
//A5 本交换机Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.32.12.87, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
基础信息及问题描述，见如下图示：
一、A1交换机配置信息
1、STP信息
A1#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 8292 (priority 8192 sys-id-ext 100)
Address 001d.7172.c700
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi2/6 Desg FWD 4 128.134 P2p
Gi2/7 Desg FWD 4 128.135 P2p
Gi2/8 Desg FWD 4 128.136 P2p
Gi2/9 Desg FWD 4 128.137 P2p
Gi2/10 Desg FWD 4 128.138 P2p
Gi2/11 Desg FWD 4 128.139 P2p
Gi2/14 Desg FWD 4 128.142 P2p
Po1 Desg FWD 3 128.1665 P2p
2、互联端口配置信息
interface GigabitEthernet2/7
description A3-G0/1
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 100
switchport mode trunk
ip arp inspection trust
logging event link-status
spanning-tree guard root
ip dhcp snooping trust
interface GigabitEthernet2/14 //至A2交换机G0/1
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
logging event link-status
spanning-tree guard root
ip dhcp snooping trust
二、A2交换机配置信息
1、STP信息
A2#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 4
Port 1 (GigabitEthernet0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 0025.4691.f380
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/1 Root FWD 4 128.1 P2p
Gi0/2 Desg FWD 4 128.2 P2p
Fa0/7 Desg FWD 19 128.9 P2p Edge
Fa0/10 Desg FWD 19 128.12 P2p Edge
2、互联端口配置信息
interface GigabitEthernet0/1
description Link_A1-G2/14
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
interface GigabitEthernet0/2
description Link_A5-G0/3
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
三、A3交换机配置信息
1、STP信息
A3#sh spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 4
Port 1 (GigabitEthernet0/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address b414.894e.ca00
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/1 Root FWD 4 128.1 P2p
Gi0/2 Desg FWD 4 128.2 P2p
Fa0/24 Desg FWD 19 128.26 P2p
2、互联端口配置信息
interface GigabitEthernet0/1
description con_A1_1
switchport trunk encapsulation dot1q
switchport trunk native vlan 100
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
!
interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
四、A5交换机配置信息
1、STP信息
A5#show spanning-tree vlan 100
VLAN0100
Spanning tree enabled protocol ieee
Root ID Priority 8292
Address 001d.7172.c700
Cost 8
Port 52 (GigabitEthernet0/52)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32868 (priority 32768 sys-id-ext 100)
Address 700b.4fb7.b580
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi0/49 Altn BLK 4 128.49 P2p
Gi0/52 Root FWD 4 128.52 P2p
2、互联端口配置信息
interface GigabitEthernet0/49
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
interface GigabitEthernet0/52
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
3、交换机Debug信息(更多详情，见附件配置文件，有采集show tech)
debug ip packet
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93, len 124, local feature, Local Clustering(8), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93, len 124, local feature, Auth Proxy(16), rtype 0, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
Nov 19 2018 13:11:44 beijing: IP: tableid=0, s=10.32.12.87 (local), d=10.32.106.93 (Vlan100), routed via RIB
Nov 19 2018 13:11:44 beijing: IP: s=10.32.12.87 (local), d=10.32.106.93 (Vlan100), len 124, output feature, Check hwidb(105), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
debug spanning-tree bpdu
Nov 19 2018 13:38:03 beijing: STP(201) port Gi0/49 supersedes 0
Nov 19 2018 13:38:03 beijing: STP: VLAN0100 rx BPDU: config protocol = ieee, packet from GigabitEthernet0/52 , linktype SSTP , enctype 3, encsize 22
Nov 19 2018 13:38:03 beijing: STP: enc 01 00 0C CC CC CD 00 25 46 91 F3 82 00 32 AA AA 03 00 00 0C 01 0B
Nov 19 2018 13:38:03 beijing: STP: Data 00000000002064001D7172C70000000004806400254691F38080020100140002000F00
Nov 19 2018 13:38:03 beijing: STP: VLAN0100 Gi0/52:0000 00 00 00 2064001D7172C700 00000004 806400254691F380 8002 0100 1400 0200 0F00
Nov 19 2018 13:38:03 beijing: STP(100) port Gi0/52 supersedes 0
Nov 19 2018 13:38:03 beijing: STP: VLAN0300 rx BPDU: config protocol = ieee, packet from GigabitEthernet0/49 , linktype SSTP , enctype 3, encsize 22
Nov 19 2018 13:38:03 beijing: STP: enc 01 00 0C CC CC CD B4 14 89 4E CA 02 00 32 AA AA 03 00 00 0C 01 0B
Nov 19 2018 13:38:03 beijing: STP: Data 0000000000212C001D7172C70000000004812CB414894ECA0080020100140002000F00
Nov 19 2018 13:38:03 beijing: STP: VLAN0300 Gi0/49:0000 00 00 00 212C001D7172C700 00000004 812CB414894ECA00 8002 0100 1400 0200
