Home » Cisco » 200-105 v.2 » What two options are causes of network slowness that can result from inter-VLAN routing problems?
What two options are causes of network slowness that can result from inter-VLAN routing problems? (Choose two.)
A. Root guard disabled on an EtherChannel
B. Packet loss
C. DTP disabled on a switchport
D. BPDU guard enabled on a switchport
E. Hardware forwarding issues
Correct Answer: BE
Explanation/Reference:
Explanation:
Causes for Network Slowness
Packet Loss
In most cases, a network is considered slow when higher-layer protocols (applications) require extended time to complete an operation that typically runs faster.
That slowness is caused by the loss of some packets on the network, which causes higher-level protocols like TCP or applications to time out and initiate retransmission.
Hardware Forwarding Issues
With another type of slowness, caused by network equipment, forwarding (whether Layer 2 [L2] or L3) is performed slowly. This is due to a deviation from normal (designed) operation and switching to slow path forwarding. An example of this is when Multilayer Switching (MLS) on the switch forwards L3 packets between VLANs in the hardware, but due to misconfiguration, MLS is not functioning properly and forwarding is done by the router in the software (which drops the interVLAN forwarding rate significantly).
Reference: https://www.cisco.com/c/en/us/support/docs/lan-switching/virtual-lans-vlan-trunking-protocol-vlans-vtp/23637-slow-intvlanconnect.html#common_causes
