System information

C613-10501-01-REV B Software Release Note AlliedWare Plus Version 5.3.4-0.1 3
New Features and Enhancements
This software version includes the following main new features. For a list of all new and
enhanced features and commands, see “Changes in this Version” on page 6. For more
information about all features on the switch, see the Software Reference for your switch.
Unless otherwise stated, all new features and enhancements are available on all switch models
running this version of AlliedWare Plus.
VCStack Fast Failover
Virtual Chassis Stacking (VCStack) delivers resiliency and scalability to networks, simplifying
management while increasing performance. VCStack Fast Failover further enhances this
advanced solution by providing absolutely minimal network downtime in the event of a
problem, by reducing traffic interruption across the stack following master failover.
The time taken for VCStack to recover and forward traffic following a stack failure has been
dramatically reduced. With this feature VCStack will in most cases resume and traffic will flow
within six seconds of master failover. Fast Failover reduces traffic interruption across the stack
following master failover. The time for the tested solution for VCStack failover to run has
reduced from 14 seconds to under 1 second with the enhancements to VCStack in this release.
XEM-2XP Support (x908/x900 series)
This release supports the XEM-2XP module with 10G XFP ports for resilient 10G EPSRring.
sFlow Agent
sFlow® is an industry standard technology for monitoring high speed switched networks. It
provides the ability to monitor traffic in data networks containing switches and routers. It gives
complete visibility into the use of networks enabling performance optimization, accounting/
billing for usage, and defence against security threats. Sampled packets sent to a collector
ensure it has a real-time view of network traffic.
sFlow® can be used to identify network bottlenecks and high bandwidth consumers. sFlow
lowers the cost of network resources when Network Administrators can optimize networks
using existing equipment and improving network design, instead of purchasing new equipment.
DHCP Snooping
DHCP servers allocate IP addresses to clients, and the switch keeps a record of addresses
issued on each port. DHCP Snooping can be used to increase network security and traceability
by filtering traffic according to valid DHCP leases. DHCP snooping on the switch supports
traffic filtering, DHCP Option 82, ARP security, and MAC address verification.
DHPCP Snooping is used to keep a record of which IP address are currently allocated to hosts
downstream of the ports on the switch. DHCP Snooping prevents attackers from spoofing an
IP address because the switch is aware of authorized IP addresses to drop any untrusted hosts.
DHCP Lease Deletion
On dynamically allocated bindings the new command for this feature clears either a specific
lease binding, or the lease bindings specified by the new command.
ARP Logging
You can enable your device to log static and dynamic ARP entries, and you can select either
default hexadecimal notation (HHHH.HHHH.HHHH) or standard IEEEE format hexadecimal
notation (HH-HH-HH-HH-HH-HH) for the MAC addresses displayed in the ARP log output.
ACL Sequence Number Support
To help you manage ACLs you can apply sequence numbers to filters. This allows you to
remove filters from named and numbered ACLs without having to reconfigure an ACL. The
ability to add sequence numbers to filters simplifies updates through the ability to position a
filter within an ACL. When you add a new filter, you can specify a sequence number to position
the filter in the ACL. You can remove a filter in an ACL by specifying a sequence number too.