Table Of Contents

New and Changed Information

New and Changed Information

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This chapter lists the information that is new or was changed in this document per release, and where it is located.

Feature	Description	Changed in release	Where Documented
ACL Logging	You can log statistics for flows that match the ACL permit or deny conditions to monitor the flows.	4.2(1)SV1 (5.1)	Chapter 9 "Configuring an IP ACL"
UUFB	You can block unknown unicast packets from flooding the forwarding path.	4.2(1)SV1(4a)	Chapter 16 "Blocking Unknown Unicast Flooding"
DHCP Snooping Relay Agent (Option 82)	You can configure DHCP to relay VSM MAC and port information in DHCP packets.	4.2(1)SV1(4)	Chapter 12 "Configuring DHCP Snooping"
DHCP Snooping binding table	You can clear DHCP snooping binding table entries for an interface.	4.2(1)SV1(4)	Chapter 12 "Configuring DHCP Snooping"
Enable DHCP	You can enable or disable DHCP globally using the feature DHCP command.	4.2(1)SV1(4)	Chapter 12 "Configuring DHCP Snooping"
Enable SSH server	You can enable or disable the SSH server using the feature DHCP command.	4.2(1)SV1(4)	Chapter 7 "Configuring SSH"
Enable Telnet server	You can enable or disable the Telnet server using the feature DHCP command.	4.2(1)SV1(4)	Chapter 8 "Configuring Telnet"
Disable HTTP Server	Disabling the HTTP server for security purposes.	4.2(1)SV1(4)	Chapter 15 "Disabling HTTP Server"
VSD	Virtual service domains (VSDs) allow you to classify and separate traffic for network services.	4.0(4)SV1(2)	Chapter 3 "Configuring VSD"
DHCP Snooping	Dynamic Host Configuration Protocol (DHCP) snooping acts like a firewall between untrusted hosts and trusted DHCP servers.	4.0(4)SV1(2)	Chapter 12 "Configuring DHCP Snooping"
Dynamic ARP Inspection (DAI)	Dynamic ARP inspection (DAI) provides IP communication within a Layer 2 broadcast domain by mapping an IP address to a MAC address.	4.0(4)SV1(2)	Chapter 13 "Configuring Dynamic ARP Inspection"
IP Source Guard	IP Source Guard is a per-interface traffic permit filter for IP and MAC addresses.	4.0(4)SV1(2)	Chapter 14 "Configuring IP Source Guard"