| Exam 300-115 | Question id=1307 | Layer 2 Technologies |
Refer to the exhibit.
!
interface GigabitEthernet0/1
switchport
switchport mode trunk
switchport trunk allowed vlan 1-100
!
interface GigabitEthernet0/48
switchport
switchport mode access
!
monitor session 1 source interface GigabitEthernet0/1
monitor session 1 destination interface GigabitEthernet0/48
How can the traffic that is mirrored out the GigabitEthernet0/48 port be limited to only traffic that is received or transmitted in VLAN 10 on the GigabitEthernet0/1 port?
| A. |
Change the configuration for GigabitEthernet0/48 so that it is a member of VLAN 10. | |
| B. |
Add an access list to GigabitEthernet0/48 to filter out traffic that is not in VLAN 10. | |
| C. |
Apply the monitor session filter globally to allow only traffic from VLAN 10. | |
| D. |
Change the monitor session source to VLAN 10 instead of the physical interface. |
To start a new flow-based SPAN (FSPAN) session or flow-based RSPAN (FRSPAN) source or destination session, or to limit (filter) SPAN source traffic to specific VLANs, use the monitor session filter global configuration command.
Usage Guidelines
You can set a combined maximum of two local SPAN sessions and RSPAN source sessions. You can have a total of 66 SPAN and RSPAN sessions on a switch or switch stack.
You can monitor traffic on a single VLAN or on a series or range of ports or VLANs. You select a series or range of VLANs by using the [ , | -] options.
If you specify a series of VLANs, you must enter a space before and after the comma. If you specify a range of VLANs, you must enter a space before and after the hyphen (-).
VLAN filtering refers to analyzing network traffic on a selected set of VLANs on trunk source ports. By default, all VLANs are monitored on trunk source ports. You can use the monitor session session_number filter vlan vlan-id command to limit SPAN traffic on trunk source ports to only the specified VLANs.
VLAN monitoring and VLAN filtering are mutually exclusive. If a VLAN is a source, VLAN filtering cannot be enabled. If VLAN filtering is configured, a VLAN cannot become a source.