Which statements about RSPAN are true?

Which statements about RSPAN are true? (Choose two.)
A. It supports MAC address learning.
B. RSPAN VLANS can carry RSPAN traffic only.
C. only one RSPAN VLAN can be configured per device.
D. RSPAN VLANs are exempt from VTP pruning.
E. MAC address learning is not supported.
F. RSPAN uses are GRE tunnel to transmit captured traffic.

cisco-exams

3 thoughts on “Which statements about RSPAN are true?

  1. B and E

    https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750e_3560e/software/release/12-2_55_se/configuration/guide/3750escg/swspan.html#wp1200730

    RSPAN VLAN
    The RSPAN VLAN carries SPAN traffic between RSPAN source and destination sessions. It has these special characteristics:

    •All traffic in the RSPAN VLAN is always flooded.

    •No MAC address learning occurs on the RSPAN VLAN.

    •RSPAN VLAN traffic only flows on trunk ports.

    •RSPAN VLANs must be configured in VLAN configuration mode by using the remote-span VLAN configuration mode command.

    •STP can run on RSPAN VLAN trunks but not on SPAN destination ports.

    •An RSPAN VLAN cannot be a private-VLAN primary or secondary VLAN.

    For VLANs 1 to 1005 that are visible to VLAN Trunking Protocol (VTP), the VLAN ID and its associated RSPAN characteristic are propagated by VTP. If you assign an RSPAN VLAN ID in the extended VLAN range (1006 to 4094), you must manually configure all intermediate switches.

    It is normal to have multiple RSPAN VLANs in a network at the same time with each RSPAN VLAN defining a network-wide RSPAN session. That is, multiple RSPAN source sessions anywhere in the network can contribute packets to the RSPAN session. It is also possible to have multiple RSPAN destination sessions throughout the network, monitoring the same RSPAN VLAN and presenting traffic to the user. The RSPAN VLAN ID separates the sessions.

  2. You van configure more than 1 vlan as a remote-sopan vlan on a switch:
    TEMP-25-ACC(config)#vl 1998
    TEMP-25-ACC(config-vlan)#remo
    TEMP-25-ACC(config-vlan)#remote-span
    TEMP-25-ACC(config-vlan)#vl 1997
    TEMP-25-ACC(config-vlan)#remote-span
    TEMP-25-ACC(config-vlan)#end
    TEMP-25-ACC#sh vl remote-span

    Remote SPAN VLANs
    ——————————————————————————
    1997-1998

    E is true, so answers are B, E

Leave a Reply

Your email address will not be published. Required fields are marked *


The reCAPTCHA verification period has expired. Please reload the page.