REP is only supported on Industrial Ethernet switches, it is not supported on Catalyst switches.

REP converges faster than Spanning Tree, allowing for greater network availability.

REP supports Industrial Ethernet protocols better because it moves the packets faster.

Running dual cables from access switches to an aggregation switch can have a much higher cost on the plant floor than in the Enterprise and running a ring protocol like REP provides resiliency at a lower cost.

Industrial protocols can be negatively impacted by the number of nodes the Ethernet frame traverses, REP provides a topology with no more than 3 nodes for

Din rail mount

19 inch rack mount

Fanless

Fans

Swappable SD flash card

Alarm relay

-5ºC to 45ºC operating environment

ProfiNET conformance class C compliance

IGMP snooping populates the snooping table with the results of DHCP requests and can be used by Dynamic ARP Inspection to block IP spoofing attacks at Layer-2.

IGMP snooping verifies the source IP address of every IPv4 packet to ensure that it hasn't been originated from a port different than its return path.

IGMP snooping is used to filter ping requests and results to avoid overflowing the MAC address table of the switch.

IGMP snooping allows a Layer-2 switch to limit the transmission of multicast frames to only the ports that have members of the relevant IGMP group.

interface Ethernet0 ip nat inside interface Ethernet1 ip nat outside

ip access-list standard ACL_NAT permit 10.1.1.0 0.0.0.255

ip nat inside source static tcp 10.1.1.0 80 interface Ethernet1 80

interface Ethernet0 ip nat outside interface Ethernet1 ip nat inside

ip nat inside source list ACL_NAT interface Ethernet1 overload

ip access-list extended ACL_NAT

ip access-list extended ACL_OUTBOUND permit ip 10.1.1.0 0.0.0.255 any interface Ethernet1 ip access-group ACL_OUTBOUND out

interface Ethernet1 ip nat outside

interface Ethernet0 ip nat inside

ip route 0.0.0.0 0.0.0.0 198.51.100.1