Cisco Catalyst 4500 Series, Software Configuration Manual

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 5 Configuring Virtual Switching Systems
Understanding Virtual Switching Systems
•
cvsModuleTable — Information on the physical modules listed in the ENTITY-MIB
entPhysicalTable, whose entPhysicalClass is module(9)
• cvsVSLConnectionTable — VSL Port Count, Operational State
•
cvsVSLStatsTable — Total Packets, Total Error Packets
• cvsVSLPortStatsTable — TX/RX Good, Bad, Bi-dir and Uni-dir Packets
Command Console
Because the management plane of the two switches are common (that is, both switches in a VSS can be
configured and managed from Active switch itself), you do not require access to the Standby console.
However, the consoles of both switches are available by connecting console cables to both supervisor
engine console ports. Availability of the Standby console does not imply that you can configure the
switch from Standby console as well. Config mode is not available on the Standby and
show commands
are limited in availability. Observe that all show commands, even for remote ports, are available on the
Active switch.
The console on the VSS Standby switch will indicate that switch is operating in VSS Standby mode by
adding the characters “-stdby” to the command line prompt. You cannot enter configuration mode on the
VSS Standby switch console.
The following example shows the prompt on the VSS Standby console:
Switch-standby> sh clock
*14:04:58.705 UTC Tue Nov 20 2012
Accessing the Remote Console on VSS
Note
The remote login command is not supported on switches running Quad-Supervisor VSS mode.
Remote console (the Standby's console) can be accessed from the Local (Active) switch. This is available
on a standalone system and works similarly on VSS. To access the remote console from the Active, you
can use the
remote login command with a VSS-Standby module number. Observe that the module
number is a virtual slot and it would be an In-Chassis-Active supervisor module number on the remote
chassis.
Switch# remote login module 11
Connecting to standby virtual console
Type "exit" or "quit" to end this session
9 Switch-standby-console>
Because the Standby console is not available in config mode and only partially available in EXEC mode,
distributed features like Netflow and Wireshark have special exemptions for respective commands (that
is, these commands are allowed). Refer to
Chapter 74, “Configuring Flexible NetFlow” and Chapter 68,
“Configuring Wireshark” for details.
Copying Files to Bootflash
When you copy a file to a bootflash on the Active, it is not automatically copied to the Standby bootflash.
This means that when you perform an ISSU upgrade or downgrade, both switches must receive the files
individually. This behavior matches that on a dual-supervisor standalone system. Similarly, the removal
of a file on one switch does not cause the removal of the same file on the other switch.