Figure 2-37 outlines a basic ?¬‚ow for troubleshooting switch problems that will be used in
this section.
Figure 2-37 Troubleshooting Flow
Troubleshooting Port Connectivity
If you are experiencing connectivity problems, the ?¬?rst thing to check is the port. Ports are
the foundation of the switched network. If they do not work, nothing works! Some ports
have special signi?¬?cance because of their location in the network and the amount of traf?¬?c
they carry. These include ports that have connections to other switches, routers, and servers.
They can be more complicated to troubleshoot because they often take advantage of special
Troubleshoot
Physical Layer
Port Connectivity
Issues
Troubleshoot
VLAN/Trunking
Issues
Troubleshoot
VTP
Issues
Troubleshoot
Spanning-Tree
Issues
78 Chapter 2: Medium-Sized Switched Network Construction
features, such as trunking and EtherChannel. However, do not overlook the other ports;
they, too, are signi?¬?cant because they connect users in the network. Figure 2-38 shows the
?¬‚ow for troubleshooting port connectivity.
Figure 2-38 Troubleshooting Port Connectivity
Hardware Issues
Hardware issues can be one of the reasons a switch has connectivity issues.
Pages:
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140