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社区首页 >问答首页 >HP到Cisco生成树根扇动

问HP到Cisco生成树根扇动
EN

Server Fault用户
提问于 2012-12-06 14:58:12
回答 1查看 14.3K关注 0票数 9

根据最近的一个问题，我最近将我的惠普(2x2900)和思科(1x3750)硬件配置为使用MSTP实现互操作性。我认为这是功能性的，直到我将更改应用到第三个设备(下面的HP交换机1)，此时生成树根开始抖动，导致我的两个HP交换机之间的性能问题(5%的分组丢失)。我不知道为什么。

HP交换机1 A4连接到思科1/0/1，HP交换机2 B2连接到思科2/0/1，HP交换机1 A2连接到HP交换机2 A1。我更喜欢Cisco堆栈作为根。

编辑：

在惠普交换机2中有一条具体的行--‘生成树1路径-成本- 500000’，我没有添加，而且是预先存在的。我不确定它是否会产生我所描述的那种影响。我更多的是一个安全和监控人员，然后是网络。

编辑2:

我开始相信问题在于思科上我的MST 0实例的值仍然是默认的32768。我绘制了一个图表：

这是基于我能为STP找到的每一个STP命令。我会在几个小时后做这个改变，看看是否有帮助。

思科3750 Config：

代码语言：javascript
复制
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显示生成树：

代码语言：javascript
复制
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显示日志记录：

代码语言：javascript
复制
%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开关1：

代码语言：javascript
复制
; 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开关1显示生成树：

代码语言：javascript
复制
 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交换机1日志记录:我删除了日期/时间字段，因为它们不准确(在这些交换机上没有配置NTP )

代码语言：javascript
复制
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 ...

HP交换机2配置：

代码语言：javascript
复制
; 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开关2生成树：

代码语言：javascript
复制
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交换机2日志记录:我删除了日期/时间字段，因为它们不准确(在这些交换机上没有配置NTP )

代码语言：javascript
复制
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
cisco
hp-procurve
cisco-catalyst
stp
spanning-tree
EN

回答 1

Server Fault用户

回答已采纳

发布于 2012-12-12 02:43:58

哇..。在所有的研究之后，我所缺少的只是将MST 0实例值设置为比默认值低的值。一旦我把它设置为4096，所有的显示生成树吐露开始像预期的那样运作，把Cisco macs作为根。

GerryEgan的解决方案将在其中工作，因为它还会将MST 0实例更改为较低的值。不过，我最终希望能够同时使用10 gig链接，一个用于VLAN 1，一个用于VLAN 100。这一总体设置是在考虑到最终目标的情况下制定的。我没有把它包括在问题中，因为它并不是真正的问题--我急切地想要任何解决办法。

总之，为了配置这个设置，我使用了：

思科3750

代码语言：javascript
复制
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
spanning-tree mst 0 priority 4096

HP开关

代码语言：javascript
复制
spanning-tree
spanning-tree config-name "mstp"
spanning-tree config-revision 1
spanning-tree instance 1 vlan 1 40 70 100 250
票数 3
EN
页面原文内容由Server Fault提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://serverfault.com/questions/455731

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