(Tx + Rx) 624014 105347 889310 536246 315228 The show top feature also provides the capability to run a report showing the Top-N error-producing ports, which is a tremendously useful tool when you suspect autone- gotiation issues. To run an error-based Top-N report on CatOS, execute the command show top error all back interval 60. IOS versions 12.2(18)SXE and later for the Catalyst 6500 allow Top-N reports to be generated. The results are very similar to those generated by CatOS, but the commands to run the reports are different. To run a Top-N report on IOS, execute the collect top command. Installing VSS This section outlines the commands used to enable VSS from a pair of standalone 6509- V-E switches. We will build a cluster with the configuration shown in Figure 17-9. Installing VSS 4X 10G Port-Channel Te 1/5/4-5 Te 1/5/4-5 Te 1/3/4-5 Te 1/3/4-5 Te 1/3/1 Te 2/3/1 Enhanced PaGP Capable Switch Figure 17-9. VSS layout including PaGP-capable switch Since the switches start as standalone switches, we need to start configuring them in- dividually. Once we've done that, I'll show the matching configuration for the switch on the right. First, we need to put the switch into stateful failover mode, which we do as follows: 6509-VE-Left#conf t Enter configuration commands, one per line. End with CNTL/Z. 6509-VE-Left(config)#redundancy 6509-VE-Left(config-red)# #mode ? rpr Route Processor Redundancy sso Stateful Switchover 6509-VE-Left (config-red) #mode sso You can view the redundancy state with the show redundancy states command: 6509-VE-Left#sho redundancy states my state = 13 -ACTIVE peer state = 1 -DISABLED Mode = Simplex Unit = Primary Unit ID = 5 Redundancy Mode (Operational) = sso Redundancy Mode (Configured) = sso Redundancy State = Non Redundant Maintenance Mode = Disabled Communications = Down Reason: Simplex mode client count = 135 client notification TMR = 30000 milliseconds keep_alive TMR = 9000 milliseconds keep_alive count = 0 keep_alive threshold = 18 RF debug mask = 0x0 Chapter 17: Cisco 6500 Multilayer 