New Software Features In Cisco Ios Xe Release 3.10S; Auto-Ip; Bfd Debug Enhancement; Bidirectional Forwarding Detection Deterministic Hardware Offload - Cisco ASR 900 Series Release Notes

Chapter

Auto-IP

The Auto-IP feature addresses the problem of manually reconfiguring nodes during insertion, deletion,
and movement of nodes within an auto-IP ring. The auto-IP feature automatically provides IP addresses
to the node interfaces inserted into an auto-IP ring.
For more information, see Auto-IP.

BFD Debug Enhancement

The Bidirectional Forwarding Detection (BFD) Debug Enhancement feature enhances the BFD debug
messages and the show command output and enables logs and history for critical BFD events. This
feature helps network engineers and operators to easily identify any issues with BFD sessions or events.
The following commands were introduced for this feature: monitor event-trace bfd, monitor event-trace
bfd event, monitor event-trace bfd packet, and show monitor event-trace bfd.
For more information, refer to the
(Cisco ASR
Protocol-Independent Commands S through

Bidirectional Forwarding Detection Deterministic Hardware Offload

The Bidirectional Forwarding Detection (BFD) deterministic hardware offload feature allows you to
define the BFD transmission timer value. Any BFD sessions below or equal to the set value are sent to
hardware.
For more information see,

Broadcast and Multicast Suppression

A traffic storm occurs when packets flood the LAN, creating excessive traffic and degrading network
performance. The traffic broadcast and multicast suppression (or storm control) feature prevents LAN
ports from being disrupted by a broadcast, multicast and unicast traffic storm on physical interfaces.
Storm control prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm
on a port. Storm control is applicable for physical interfaces and is used to restrict the unicast, broadcast
and multicast ingress traffic on the Layer2 interfaces. The feature is disabled by default on the Cisco
ASR 903 router.
For more information see,

IGMP Snooping

IP Multicast Internet Group Management Protocol (IGMP), which runs at Layer 3 on a multicast device,
generates Layer 3 IGMP queries in subnets where the multicast traffic must be routed. IGMP (on a
device) sends out periodic general IGMP queries.
IGMP Snooping is an Ethernet Virtual Circuit (EVC)-based feature set. When IGMP snooping is enabled
on a bridge domain, the bridge domain interface responds at Layer 2 to the IGMP queries with only one
IGMP join request per Layer 2 multicast group. Each bridge domain represents a Layer 2 broadcast
domain.
For more information see,
OL-26630-12
IP Routing: BFD Configuration Guide, Cisco IOS XE Release 3S
903), IP Routing Protocol-Independent Commands A through
Bidirectional Forwarding Detection Deterministic Hardware Offload.
Configuring Broadcast and Multicast Suppression on the Cisco ASR Router.
Configuring IGMP Snooping on Cisco ASR 903

New Software Features in Cisco IOS XE Release 3.10S

T.
Cisco IOS XE 3S Release Notes for the Cisco ASR 903 Router
R, and IP Routing
Router.
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