viii
C O N T E N T S
Explicit Class of Service Traffic Groupings (802.1p and
DiffServ)................................. .................................. 1 47
Configuring 802.1p Priority ......................................148
Observing 802.1p Information .................................148
Replacing 802.1p Priority Information .....................149
802.1p Commands ..................................................150
Configuring DiffServ ........................... ..................... 151
Observing DiffServ Information .............. .................152
Changing DiffServ Code Point Assignments in the QoS
Profile ....................................... ............................... 152
Replacing DiffServ Code Points ..............................153
DiffServ Example .............. ....................................... 156
Physical and Logical Groupings.............................. 156
Source Port ............................. .................................15 6
VLAN ........................................ ............................... 157
Verifying Physical and Logical Groupings ...............157
Verifying Configuration and Performance ................157
QoS Monitor ....................................... ..................... 158
Real-Time Performance Monitoring .........................158
Background Performance Monitoring ...................... 159
Displaying QoS Information ..................................... 159
Modifying a QoS Policy .......................... ....................160
QoS Profile Buffer ................................. ......................160
Maximum QoS Buffer ...................................... ........ 160
Bandwidth Settings and Their Impact...................... 161
Maximum bandwidth settings ..................................161
Minimum bandwidth settings ...................................162
Bi-directional Rate Shaping for Layer 3 Routed VLANs
163
Configuring Bi-Directional Rate Shaping................. 164
Bi-Directional Rate Shaping Limitations.................. 165
Bi-Directional Rate Shaping Commands................. 165
11: Enterprise Standby Router Protocol
(ESRP) .............................................. 167
Overview ..................................... ................................. 167
ESRP-Aware Switches............................................ 168
ESRP Basics ................................................................168
Multiple ESRP VLANs............................................. 169
Mixing Clients and Routers on ESRP VLANs.......... 169