Cisco Cisco Unified Operations Manager 8.6 Libro blanco
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SNMP community strings must match on the devices and in the Operations Manager
default credentials repository.
To configure SNMP v2 community strings on a Cisco CatOS device, use the following
global configuration commands:
default credentials repository.
To configure SNMP v2 community strings on a Cisco CatOS device, use the following
global configuration commands:
set snmp community read-only
<read-community-string>
set snmp community read-write
<write-community-string>
These commands ensure that the device can be identified and that SNMP polling can be
carried out.
carried out.
3.1.2.2 Cisco Discovery Protocol
Cisco Discovery Protocol (CDP) is a Cisco proprietary protocol that is used by devices to
advertise their existence to other devices on the network. Each device that has Cisco
Discovery Protocol enabled maintains a table of its neighbors. Operations Manager uses
Cisco Discovery Protocol to perform an automated discovery of all the Cisco devices in
the network and gather information about Cisco IP Phones connected to these devices. If
Cisco Discovery Protocol is not enabled on a device, Operations Manager cannot perform
an automated network discovery and cannot gather information about Cisco IP Phones
connected to these devices. Cisco Discovery Protocol is enabled by default, so you need
to enable it only if it has been explicitly disabled. You might also want to disable Cisco
Discovery Protocol on devices that are on the borders of your management domain.
To enable Cisco Discovery Protocol on a Cisco Catalyst device, use the following
command:
advertise their existence to other devices on the network. Each device that has Cisco
Discovery Protocol enabled maintains a table of its neighbors. Operations Manager uses
Cisco Discovery Protocol to perform an automated discovery of all the Cisco devices in
the network and gather information about Cisco IP Phones connected to these devices. If
Cisco Discovery Protocol is not enabled on a device, Operations Manager cannot perform
an automated network discovery and cannot gather information about Cisco IP Phones
connected to these devices. Cisco Discovery Protocol is enabled by default, so you need
to enable it only if it has been explicitly disabled. You might also want to disable Cisco
Discovery Protocol on devices that are on the borders of your management domain.
To enable Cisco Discovery Protocol on a Cisco Catalyst device, use the following
command:
set cdp enable <all | module/port>
Tips:
• Use the "all" parameter to enable Cisco Discovery Protocol on all ports on the
device, or enter specific module and port numbers. A range of ports can also be
entered.
For example,
entered.
For example,
set cdp enable 2/1-10,3/5-10
To disable Cisco Discovery Protocol on a Cisco Catalyst device, use the
command
command
set cdp disable
.
• Do not run Cisco Discovery Protocol on links that you do not want discovered,
such as Internet connections.
Note: Do not enable Cisco Discovery Protocol on links that do not go to Cisco devices.
This protects you from Cisco Discovery Protocol DoS attacks. Cisco Discovery Protocol
is also relevant to Cisco IOS devices (both routers and switches), because Cisco IOS is
being increasingly used on new switches and even on Cisco Catalyst 6500s.
This protects you from Cisco Discovery Protocol DoS attacks. Cisco Discovery Protocol
is also relevant to Cisco IOS devices (both routers and switches), because Cisco IOS is
being increasingly used on new switches and even on Cisco Catalyst 6500s.