Per pertanyaan baru-baru ini saya baru-baru ini mengkonfigurasi perangkat keras HP (2x 2900) dan Cisco (1x 3750) saya untuk menggunakan MSTP untuk interoperabilitas. Saya pikir ini berfungsi sampai saya menerapkan perubahan ke perangkat ketiga (HP switch 1 di bawah) di mana root spanning tree mulai mengepakkan menyebabkan masalah kinerja (kehilangan paket 5%) antara dua switch HP saya. Saya tidak yakin mengapa.
HP Switch 1 A4 terhubung ke Cisco 1/0/1. HP Switch 2 B2 terhubung ke Cisco 2/0/1. HP Switch 1 A2 terhubung ke HP Switch 2 A1. Saya lebih suka tumpukan Cisco untuk bertindak sebagai root.
EDIT:
Ada satu baris spesifik - 'spanning-tree 1 path-cost 500000' di HP switch 2 yang tidak saya tambahkan dan sudah ada sebelumnya. Saya tidak yakin apakah itu dapat memiliki dampak yang saya gambarkan. Saya lebih seorang pria keamanan dan pemantauan daripada jaringan.
EDIT 2:
Saya mulai percaya bahwa masalahnya terletak pada kenyataan bahwa nilai untuk contoh MST 0 saya di Cisco masih pada standar 32768. Saya membuat diagram: Ini didasarkan pada setiap perintah acara yang dapat saya temukan untuk STP. Saya akan melakukan perubahan ini setelah jam dan melihat apakah itu membantu.
Konfigurasi Cisco 3750:
version 12.2
spanning-tree mode mst
spanning-tree extend system-id
spanning-tree mst configuration
name mstp
revision 1
instance 1 vlan 1, 40, 70, 100, 250
spanning-tree mst 1 priority 0
vlan internal allocation policy ascending
interface TenGigabitEthernet1/1/1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface TenGigabitEthernet2/1/1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface Vlan1
no ip address
!
interface Vlan100
ip address 192.168.100.253 255.255.255.0
!
Cisco 3750 show spanning tree:
show spanning-tree
MST0
Spanning tree enabled protocol mstp
Root ID Priority 32768
Address 0004.ea84.5f80
Cost 200000
Port 53 (TenGigabitEthernet1/1/1)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768 (priority 32768 sys-id-ext 0)
Address a44c.11a6.7c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Te1/1/1 Root FWD 2000 128.53 P2p
MST1
Spanning tree enabled protocol mstp
Root ID Priority 1
Address a44c.11a6.7c80
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 1 (priority 0 sys-id-ext 1)
Address a44c.11a6.7c80
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Te1/1/1 Desg FWD 2000 128.53 P2p
Cisco 3750 tampilkan logging:
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to up
HP Switch 1:
; J9049A Configuration Editor; Created on release #T.13.71
vlan 1
name "DEFAULT_VLAN"
untagged 1-8,10,13-16,18-23,A1-A4
ip address 100.100.100.17 255.255.255.0
no untagged 9,11-12,17,24
exit
vlan 100
name "192.168.100"
untagged 9,11-12,17,24
tagged 1-8,10,13-16,18-23,A1-A4
no ip address
exit
vlan 21
name "Users_2"
tagged 1,A1-A4
no ip address
exit
vlan 40
name "Cafe"
tagged 1,4,7,A1-A4
no ip address
exit
vlan 250
name "Firewall"
tagged 1,4,7,A1-A4
no ip address
exit
vlan 70
name "DMZ"
tagged 1,4,7-8,13,A1-A4
no ip address
exit
spanning-tree
spanning-tree config-name "mstp"
spanning-tree config-revision 1
spanning-tree instance 1 vlan 1 40 70 100 250
password manager
password operator
HP Switch 1 show spanning tree:
show spanning-tree
Multiple Spanning Tree (MST) Information
STP Enabled : Yes
Force Version : MSTP-operation
IST Mapped VLANs : 2-39,41-69,71-99,101-249,251-4094
Switch MAC Address : 0021f7-126580
Switch Priority : 32768
Max Age : 20
Max Hops : 20
Forward Delay : 15
Topology Change Count : 363,490
Time Since Last Change : 14 hours
CST Root MAC Address : 0004ea-845f80
CST Root Priority : 32768
CST Root Path Cost : 200000
CST Root Port : 1
IST Regional Root MAC Address : 0021f7-126580
IST Regional Root Priority : 32768
IST Regional Root Path Cost : 0
IST Remaining Hops : 20
Root Guard Ports :
TCN Guard Ports :
BPDU Protected Ports :
BPDU Filtered Ports :
PVST Protected Ports :
PVST Filtered Ports :
| Prio | Designated Hello
Port Type | Cost rity State | Bridge Time PtP Edge
----- --------- + --------- ---- ---------- + ------------- ---- --- ----
A1 | Auto 128 Disabled |
A2 10GbE-CX4 | 2000 128 Forwarding | 0021f7-126580 2 Yes No
A3 10GbE-CX4 | Auto 128 Disabled |
A4 10GbE-SR | Auto 128 Disabled |
HP Switch 1 Logging: Saya menghapus bidang tanggal / waktu karena tidak akurat (tidak ada NTP yang dikonfigurasi pada switch ini)
00839 stp: MSTI 1 Root changed from 0:a44c11-a67c80 to 32768:0021f7-126580
00839 stp: MSTI 1 Root changed from 32768:0021f7-126580 to 0:a44c11-a67c80
00842 stp: MSTI 1 starved for an MSTI Msg Rx on port A4 from 0:a44c11-a67c80
00839 stp: MSTI 1 Root changed from 0:a44c11-a67c80 to 32768:0021f7-126580
00839 stp: MSTI 1 Root changed from 32768:0021f7-126580 to 0:a44c11-a67c80
00839 stp: MSTI 1 Root changed from 0:a44c11-a67c80 to ...
Konfigurasi HP Switch 2:
; J9146A Configuration Editor; Created on release #W.14.49
vlan 1
name "DEFAULT_VLAN"
untagged 1,3-17,21-24,A1-A2,B2
ip address 100.100.100.36 255.255.255.0
no untagged 2,18-20,B1
exit
vlan 100
name "192.168.100"
untagged 2,18-20
tagged 1,3-17,21-24,A1-A2,B1-B2
no ip address
exit
vlan 21
name "Users_2"
tagged 1,A1-A2,B2
no ip address
exit
vlan 40
name "Cafe"
tagged 1,13-14,16,A1-A2,B2
no ip address
exit
vlan 250
name "Firewall"
tagged 1,13-14,16,A1-A2,B2
no ip address
exit
vlan 70
name "DMZ"
tagged 1,13-14,16,A1-A2,B2
no ip address
exit
logging 192.168.100.18
spanning-tree
spanning-tree 1 path-cost 500000
spanning-tree config-name "mstp"
spanning-tree config-revision 1
spanning-tree instance 1 vlan 1 40 70 100 250
HP Switch 2 Spanning Tree:
show spanning-tree
Multiple Spanning Tree (MST) Information
STP Enabled : Yes
Force Version : MSTP-operation
IST Mapped VLANs : 2-39,41-69,71-99,101-249,251-4094
Switch MAC Address : 0024a8-cd6000
Switch Priority : 32768
Max Age : 20
Max Hops : 20
Forward Delay : 15
Topology Change Count : 21,793
Time Since Last Change : 14 hours
CST Root MAC Address : 0004ea-845f80
CST Root Priority : 32768
CST Root Path Cost : 200000
CST Root Port : A1
IST Regional Root MAC Address : 0021f7-126580
IST Regional Root Priority : 32768
IST Regional Root Path Cost : 2000
IST Remaining Hops : 19
Root Guard Ports :
TCN Guard Ports :
BPDU Protected Ports :
BPDU Filtered Ports :
PVST Protected Ports :
PVST Filtered Ports :
| Prio | Designated Hello
Port Type | Cost rity State | Bridge Time PtP Edge
----- --------- + --------- ---- ---------- + ------------- ---- --- ----
A1 10GbE-CX4 | 2000 128 Forwarding | 0021f7-126580 2 Yes No
A2 10GbE-CX4 | Auto 128 Disabled |
B1 SFP+SR | 2000 128 Forwarding | 0024a8-cd6000 2 Yes No
B2 | Auto 128 Disabled |
HP Switch 2 Logging: Saya menghapus bidang tanggal / waktu karena tidak akurat (tidak ada NTP yang dikonfigurasi pada switch ini)
00839 stp: CST Root changed from 32768:0021f7-126580 to 32768:0004ea-845f80
00839 stp: IST Root changed from 32768:0021f7-126580 to 32768:0024a8-cd6000
00839 stp: CST Root changed from 32768:0004ea-845f80 to 32768:0024a8-cd6000
00839 stp: CST Root changed from 32768:0024a8-cd6000 to 32768:0004ea-845f80
00839 stp: CST Root changed from 32768:0004ea-845f80 to 32768:0024a8-cd6000
00435 ports: port B1 is Blocked by STP
00839 stp: CST Root changed from 32768:0024a8-cd6000 to 32768:0021f7-126580
00839 stp: IST Root changed from 32768:0024a8-cd6000 to 32768:0021f7-126580
00839 stp: CST Root changed from 32768:0021f7-126580 to 32768:0004ea-845f80