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Dell 6200 - page 1
MSTP INTER OPERABILITY OF THE DELL ™ PO WER CONNECT ™ 6200 SERIES SWIT CHES THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. Dell and PowerConnect are trademarks of Dell Inc. Other trademarks and ...
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Dell 6200 - page 2
CONTENTS INTRODUCTION 3 IEEE 802.1S MULTIPLE SPANNING TREE PROTOCOL OVERVI EW 3 DELL POWERCONNECT 62XX MSTP FUNCTIONAL DESCRIPTION 3 ACTIVE TOPOLOGY ENFORCEMENT 5 CONTROL PACKET BEHAVIOR 6 MSTP CLI COMMANDS 6 OPERATION IN THE NETWORK 7 SAMPLE SETUP AND CONFIGURATIONS 9 CONFIGURING BRIDGE BrA (WEB INTERFACE) 10 CONFIGURING BRIDGE BrB 16 CONFI GURING ...
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Dell 6200 - page 3
3 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 3 INTROD UCTION This paper describes the Mu ltiple Spanning Tree Protocol (M STP) support for Dell Po werConnect 62xx devices, which include the PC6224, PC6248, PC6224P, PC6248P, PC6224F, and M6220 switches. This doc ...
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Dell 6200 - page 4
4 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES The MST Configuration Identifier consists of the following components: • Configuration Identifier Format Sele ctor – 1 byte value encoded as zero • Configuration Name – 32 byte string • Configuration Revisi ...
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Dell 6200 - page 5
5 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 2. Ensuring that each FID supported b y the Bridge is allocated to exactly one Spanning Tree Instan ce. The Dell PowerConnect 62xx series switch implements this through the FID to MSTI Allocation Table. The following ...
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Dell 6200 - page 6
6 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES CONTRO L P ACKET B EH AVIOR BPDU: Always transmitted as untagged. The port re ceives and transmits BPDUs in all three MSTP states: Discarding, Learning and Forwardi ng. If MSTP is disabl ed for the device (manual for ...
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Dell 6200 - page 7
7 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES OPERATION IN THE NETWORK In the following diagram of a small, 802.1d bridged network, STP is necessary to create an environment with full connectivity and w ithout loops: Figure 4: Small Bri dged Network Assume that ...
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Dell 6200 - page 8
8 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES In this simple case, VLAN 10 could be associated with MSTI 1 w i th an active topology similar to Figure 5, and VLAN 20 could be associated with MSTI 2 where port Pt1 on both bridge BrA and BrB begin discarding and a ...
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Dell 6200 - page 9
9 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES SAMPLE SET UP AND CONF IGURATIONS This section contains the CLI commands you woul d use to configure MSTP on the switches in Figure 6 where two bridg es are Dell PowerConnect switches, and the third bridge is a Cisco ...
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Dell 6200 - page 10
10 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description exit Exit to configuration mode interface ethernet 1/g2 Enter interface configuration mode for the Ethernet interface on slot 1, port 2 switchport mode trunk Configure the VLAN membership mode fo ...
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Dell 6200 - page 11
11 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 1. From the Switching > VLAN > VLAN Membership page, click Add. 2. From the Add VLA N pa ge, enter 10 in the VLAN ID field and click A pply Change s . ...
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Dell 6200 - page 12
12 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 3. Add VLAN 20. 4. To configure Port g1 as a trunk po rt, go to the Sw itching > VLAN > Port Settings page, select Trunk from the Port VL AN Mode menu for Port g1, and click Apply Cha nges . ...
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Dell 6200 - page 13
13 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 5. On the Switching > VL AN > VLAN Membershi p page, select VLAN 10 from the Show VLAN menu. 6. Add port 1 to VLAN 10 as a tagged interface. ...
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Dell 6200 - page 14
14 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 7. Select VLAN 20 from the Show VLAN menu and add port 1 as a ta gged interface. 8. Repeat steps 4-7 to configure Port 2 as a Trunk port with VLAN me mbers 10 and 20. 9. From the Switching > Spann ing Tree > G ...
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Dell 6200 - page 15
15 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES 11. On the Sw itching > Spanning Tree > MST P Settings page, ente r Dell as the Region Name , 0 as the Priorit y , and click A ppl y Changes . 12. Click Show All to access the MSTP Settings Table . 13. Click t ...
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Dell 6200 - page 16
16 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES CONFIGURING BRIDGE BrB To configure Bridge BrB, use the same comman ds as you used to configure Bridge BrA with one exception: do not use the spanning-tree mst 1 priority 0 command on Bridge BrB because it is not a ...
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Dell 6200 - page 17
17 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Command Description switchport mode trunk Enable trunking on the interface exit Exit to configuration mode interface GigabitEthernet 1/0/2 Enter configuration mode for the interface on slot 1, port 2 switchport trun ...
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Dell 6200 - page 18
18 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES VIEWING THE MSTP STATUS You can view the MSTP Re gion config uration on the three br idges by using the fo llowing comm and: show spanning-tree mst configuration The command is the same on the Dell and Cisco switche ...
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Dell 6200 - page 19
19 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Bridge BrA (Dell) Dell_BrA#show spanning-tree mst-configuration Name: Dell Revision: 0 Instance Vlan Mapped -------- ----------- 0 1 1 10 2 20 Bridge BrB (Dell) Dell_BrB#show spanning-tree mst-configuration Name: De ...
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Dell 6200 - page 20
20 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Bridge BrC (Cisco) Cisco3750_BrC#show spanning-tree active MST0 Spanning tree enabled protocol mstp Root ID Priority 32768 Address 0000.0000.0fff Cost 0 Port 1 (GigabitEthernet1/0/1) Hello Time 2 sec Max Age 20 sec ...
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Dell 6200 - page 21
21 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Interface Role Sts Cost Prio.Nbr Type ---------- ---- --- ----- -------- ----- Gi1/0/1 Desg FWD 20000 128.1 P2p Gi1/0/2 Desg FWD 20000 128.2 P2p Cisco3750_BrC# Bridge BrA (Dell) Dell_BrA# show spanning-tree active S ...
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Dell 6200 - page 22
22 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Bridge BrB (Dell) Dell_BrB#show spanning-tree active Spanning tree Enabled mode mstp CST Regional Root: 80:00:00:00:00:00:0F:FF Regional Root Path Cost: 20000 ###### MST 0 Vlan Mapped: 1 ROOT ID Address 80:00:00:00: ...
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Dell 6200 - page 23
23 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES ###### MST 2 Vlan Mapped: 20 ROOT ID Address 00:02:00:15:62:10:29:00 Path Cost 20000 Root Port 1/g2 Hello Time 2 Sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32768 Address 80:02:00:84:00:00:0F:FF Hello ...
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Dell 6200 - page 24
24 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Figure 7: Mul tiple MSTP Regions In Figure 8, a third region has been added to the topology. Even though this new region only consists of one bridge and has an MST Configurat ion Identifier that matches the bridges ...
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Dell 6200 - page 25
25 APRIL 2008 MSTP INTEROPERABILITY OF THE DELL™ POWERCON NECT™ 6200 SERIES SWITCHES WITH CISCO IOS AND CISCO CATOS-BASED SWITCHES Figure 8: Mul tiple MSTP Region Interacti ons ...
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