Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Configuration Guide, Release 5.1.x
New and Changed Feature Information in Cisco IOS XR Release 5.1.x
Downloads: This chapterpdf (PDF - 1.12MB) The complete bookPDF (PDF - 5.09MB) | Feedback

New and Changed Feature Information in Cisco IOS XR Release 5.1.x

New and Changed Feature Information in Cisco IOS XR Release 5.1.x

This table summarizes the new and changed feature information for the Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Configuration Guide, and tells you where they are documented.

New and Changed IP Addresses and Services Features

Table 1 New and Changed Features
Feature Description Introduced/Changed in Release Where Documented

HSRP for IPv6

This feature was introduced.

Release 4.3.0

ACL Counters Using SNMP Query

This feature was introduced.

Release 5.1.1

Local Proxy ARP

This feature was introduced.

Release 4.0.0

512 Tracked Objects for HSRP

This feature was introduced.

Release 5.1.1

Secure ARP

This feature was introduced.

Release 5.1.1
Implementing the Dynamic Host Configuration Protocol chapter

Secure Copy Protocol

This feature was introduced.

Release 5.1.1
Implementing Host Services and Applications chapter

Fallback VRF

This feature was introduced.

Release 5.1.1
Implementing Network Stack IPv4 and IPv6 chapter

Refer Network Stack IPv4 and IPv6 Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring fallback VRF feature.

3-Tuple Hash Algorithm

This feature was introduced.

Release 5.1.1

Refer Cisco Express Forwarding Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring 3-tuple hash algorithm feature.

DHCP Session MAC Throttle

This feature was introduced.

Release 5.1.1
Implementing the Dynamic Host Configuration Protocol chapter

Refer DHCP Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring DHCP session MAC throttle feature.

VRRP 256 Virtual Routers Support

This feature was introduced.

Release 5.1

IPV6 ABF Object Tracking

This feature was introduced.

Release 5.1

Implementing Access Lists and Prefix Lists chapter

Refer Access List Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring IPV6 ABF Object Tracking.

DHCPV4 Server Support

This feature was introduced.

Release 5.1

Refer DHCP Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring DHCPV4 Server Support .

IPv6 - ND enhancement

This feature was introduced.

Release 5.1

Refer Access List Commandschapter in Cisco ASR 9000 Series Aggregation Services Router IP Addresses and Services Command Reference for information on the commands used for configuring IPv6 - ND enhancement.