Spanning Tree Considerations For Multilink Trunks; Figure 42 Loss Of Distributed Trunk Members - Nortel 2000 Using Manual

Figure 42 Loss of distributed trunk members

T1
Accelar 1150/1150R
Routing Switch
(XLR1102SR
I/O Modules)
However, until you correct the cause of the failure or change the trunk Status field
to Disabled, you will be unable to modify any of the following parameters for the
affected trunk:
• VLAN configuration
• Spanning Tree configuration
• Port Mirroring configuration
• Port configuration
• IGMP configuration
• Rate Limiting configuration

Spanning tree considerations for MultiLink Trunks

The spanning tree Path Cost parameter is recalculated based on the aggregate
bandwidth of the trunk. For example,
two port members operating at 100 Mb/s and two at 10 Mb/s. Trunk T1 provides
an aggregate bandwidth of 220 Mb/s. The Path Cost for T1 is 4 (Path Cost = 1000/
BPS2000 MDA
BPS2000 MDA
BPS2000 MDA
BPS2000
MDA
CPU PS1 PS2 FAN
Using the Business Policy Switch 2000 Version 1.2
Chapter 2 Network configuration 135
Business Policy Switch 2000
Figure 43 shows a four-port trunk (T1) with
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
9843EA