Dell PowerConnect 2T227- Manuals

Stacking Dell PowerConnect 6200 Series Switches Page 4 0 shows a recommended stacking configuration with a dual stacking modules on each switch. Each switch connects to another with 96 Gbps of total bandwidth (4 ports @ 12 Gbps Tx and Rx each). Note that in the recommended configuration, the dual st...

Stacking Dell PowerConnect 6200 Series Switches Page 5 Power-Up Sequencing Considerations The selection of the manager and standby units is important in situations where the administrator wishes to utilize the serial port for management, perhaps as a backup console. Management of the stack via the o...

Stacking Dell PowerConnect 6200 Series Switches Page 6 Initial Installation and Power-up of a Stack Follow these instructions to create a stack: NOTE: Install units in a rack whenever possible to prevent the units and cables from being disturbed. 1. Install all stacking cables. Fully connect all cab...

Stacking Dell PowerConnect 6200 Series Switches Page 8 Updating the Firmware on a Stack Automatic Update By default, firmware synchronization is not performed automatically when a unit is powered up on a stack. Because firmware synchronization makes no attempt to check for the latest version of firm...

Stacking Dell PowerConnect 6200 Series Switches Page 9 Manual Update You can perform firmware updates on the stack by using the CLI or the Web interface. From the CLI, use the copy ftp command , which uses the FTP protocol for file transfer. To update the firmware by using the Web interface, use the...

Stacking Dell PowerConnect 6200 Series Switches Page 10 Creating a Separate VLAN for File Downloads When updating the firmware, it is helpful to keep the network port in a different VLAN and configure the PVID appropriately to avoid any network congestion or flooding issues through which the file is...

Stacking Dell PowerConnect 6200 Series Switches Page 13 Adding a Stack Member with Minimal Interruption When adding a new member to a stack, make sure that only the stack cables and no network cables are connected before powering up the new unit. Make sure the end-user links are not connected to any...

Stacking Dell PowerConnect 6200 Series Switches Page 14 Removing a Stack Member with Minimal Interruption NOTE: This migration process can be disruptive, so schedule some outage time. To minimize the disruption, plan on having one or more test scenarios to verify that the migrated ports are operatin...

Stacking Dell PowerConnect 6200 Series Switches Page 15 Merging Two Operational Stacks The recommended procedure for merging two operational stacks is as follows: 1. Always power off all units in one stack before connecting to another stack. 2. Add the units as a group by unplugging one stacking cab...

Stacking Dell PowerConnect 6200 Series Switches Page 16 If PoE is enabled on a switch port shortly before a master failover and the hardware status change had not yet been communicated to the backup unit, the switch will continue to provide PoE power even though PoE is not enabled for the port in th...

Stacking Dell PowerConnect 6200 Series Switches Page 17 Scenario 2 Consider the same example with a four-unit stack connected in daisy-chain fashion. Figure 3. Stack Split If the link between Switch 2 and Switch 3 is removed, the stack is split into two different stacks with Switches 1 and 2 in one ...

Stacking Dell PowerConnect 6200 Series Switches Page 18 Scenario 3 The following example contains a similar condition with a Master unit failover and consequent stack split with five units in the stack, as Figure 4 shows. Figure 4. Stack Split with Manager Failure In this example, there is no link b...

Stacking Dell PowerConnect 6200 Series Switches Page 19 Nonstop Forwarding A switch can be described in terms of three semi-independent functions called the forwarding plane, the control plane, and the management plane: • Forwarding Plane — The set of hardware components that forward data packets wi...

Stacking Dell PowerConnect 6200 Series Switches Page 20 To take full advantage of nonstop forwarding, layer 2 connections to neighbors should be via port channels that span two or more stack units, and layer 3 routes should be ECMP routes with next hops via physical ports on two or more units. The h...

Stacking Dell PowerConnect 6200 Series Switches Page 21 Figure 5. Nonstop Forwarding Example 1 2 3 Host 1 Host 2 Host 3 Switch 1 Switch 2 Router 1 Video stream OSPF PIM-SM Spanning Tree IGMP VLAN 10 VLAN 20 192.168.5.100 192.168.20.100 192.168.20.101

Stacking Dell PowerConnect 6200 Series Switches Page 27 NSF Reconvergence Timing As mentioned in the previous section, NSF protects against failures by check-pointing information to a standby unit. In an NSF-protected stack, the worst-case scenario is when the master unit fails. The following statis...

Stacking Dell PowerConnect 6200 Series Switches Page 28 Small Configuration • 6 switches stacked • 4 VLANs, all ports are members of all VLANs • 2/2 static/dynamic lags with 8 members each • 1 MSTP instance with VLANs • 15 ACLs applied on 15 interfaces • 5 Diffserv service interfaces with policies o...

Stacking Dell PowerConnect 6200 Series Switches Page 29 Stacking Web Interface You can access the stacking configuration and monitoring Web pages from the System > Stacking menu. The following image shows a list of the Web pages that are available for the stacking feature. Summary This paper has ...