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¡ Your management station has management VLAN access (see "Management VLAN Access").
¡ The switch is powered up.
¡ You have a valid network connection to the switch and the port you are using has not been disabled.
l Simple Network Management Protocol (SNMP) management software cannot access the switch.
Ensure that:
¡ You have configured the switch's management VLAN with a valid IP address, subnet mask, and default gateway.
¡ Your management station has management VLAN access (see "Management VLAN Access").
¡ SNMP is enabled on the switch and community strings have been set with the appropriate access rights.
¡ The switch is powered up.
¡ You have a valid network connection to the switch and the port you are using has not been disabled.
Management VLAN Access
The following sections describe troubleshooting related to management VLAN access to the switch.
Layer 2 Switch Connections
If you are having problems setting up management access in a network where there are only Layer 2 switch connections to the management station, use the
following example to troubleshoot the problem.
Example 1
Three switches, which form three VLANs, are interconnected to a fourth core switch. Network administrators who are connected to one switch need to be able
to access all switches. The VLAN port memberships should be set up as shown in the following figure.
In the preceding figure, the management VLAN is VID 2 and all inter-switch ports are configured as tagged ports. The ports that interconnect the switches
must be configured as members of the management VLAN, and the management station must be connected to a port that is also a member of the same VLAN.
For management VLAN access, ensure that:
l You have configured the switch's management VLAN with a valid IP address and subnet mask.
l The management station has an IP address in the same subnet as the management VLAN.
l The management station is connected to a switch port that is a member of the management VLAN, and the port VLAN ID (PVID) is also configured as
the management VLAN.
l Ports that interconnect switches in the network are tagged and are members of the management VLAN.
Layer 3 Switch Connections
If you are having problems setting up management access in a network where there are Layer 3 switch connections to the management station, use the
following example to troubleshoot the problem.
Example 2
Three Layer 2 switches, which form three VLANs, are interconnected to a fourth Layer 3 switch. Network administrators who are connected to one Layer 2
switch need to be able to access all switches for management. The VLAN port memberships should be set up as shown in the following figure.
- Introduction 2
- Front-Panel Components 3
- Back-Panel Descriptions 4
- Management 4
- Installation 6
- Connecting the Console Port 7
- Password Protection 7
- SNMP Settings 8
- IP Address Assignment 8
- Management Interface 11
- General Information 12
- Example 13
- CLI Commands 13
- Versions 16
- System Logs Configuration 18
- Remote Logs Configuration 20
- IP Address 22
- Security 24
- Authentication Settings 27
- Jumbo Frame 30
- Firmware Upgrade 31
- Configuration 33
- Port Configuration 36
- Trunk Configuration 38
- Broadcast Control 40
- Port Mirroring 41
- Port Security 42
- Address Table 44
- Dynamic Addresses 45
- Address Aging 46
- Spanning Tree 47
- Bridge Settings 48
- Advanced Bridge Settings 50
- Port and Trunk Settings 51
- VLAN Membership 53
- Removing VLAN Membership 54
- Port Settings 55
- Trunk Settings 57
- Class of Service 59
- Traffic Classes 60
- Queue Scheduling 62
- Layer 3/4 Priority 63
- IP Precedence 64
- DSCP Priority 64
- Link Aggregation 67
- Communities 69
- IP Filtering 71
- Multicast Support 72
- IGMP Member Port Table 74
- Statistics 77
- Utilization Summary 80
- Counter Summary 80
- VLANs and Frame Tagging 84
- VLAN Configuration 84
- Automatic VLAN Registration 85
- VLAN Examples 86
- Example 2 87
- Back to Contents Page 90
- Appendix 91
- Management VLAN Access 92
- Technical Specifications 95
- Getting Help 95
- Problems With Your Order 96
- Product Information 97
- Before You Call 97
- Contacting Dell 97
- Regulatory Notices 104
- IC Notice (Canada Only) 105
- CE Notice (European Union) 105
- VCCI Notice (Japan Only) 105
- General 107
- Rack Mounting of Systems 108
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