Cisco Cisco IOS Software Release 12.4(4)T Données agrégées
Product Bulletin
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Cisco IOS Software Early Deployment Release 12.4(15)XF
PB408212
Last updated: May 2007
Last updated: May 2007
Introduction
This product bulletin provides content and delivery information for Cisco IOS
®
Software Special
Release 12.4(15)XF. It should be used in conjunction with the release notes for Cisco IOS
Software Release 12.4T at
http://www.cisco.com/en/US/products/ps6824/index.html
, because
Release 12.4(15)T is the parent release of 12.4(15)XF.
This product bulletin lists only the features in Cisco IOS Software Release 12.4(15)XF (see
Table 1) that are new to the respective routers; more information is available in the release notes
at
http://www.cisco.com/en/US/products/ps6441/prod_release_notes_list.html
. Customers should
be prepared to upgrade using the migration path described in the “Upgrade Paths” section.
This release supports Cisco Mobile Ad Hoc Networking (MANET) enhancements for router-to-radio
links. These enhancements address the challenges faced when merging IP routing and mobile
radio communications in ad hoc networking applications. Features in this release enable faster
convergence when nodes join or leave the network, and optimal route selection based on Layer 2
feedback from the radio network. The release also provides a flow-control mechanism between a
router and its partner radio, as well as the means for integrating point-to-point directional radio
topologies with multi-hop routing environments.
Table 1.
Release 12.4(15)XF Features
Feature
Function
Neighbor Up/Down Signaling
Enables Cisco routers to use link establishment or termination signals from the radio
to update routing topology, rather than waiting for timers to expire. The routing
protocols (OSPFv3 and EIGRP) respond immediately to these link status signals by
expediting adjacency formation or tear-down.
to update routing topology, rather than waiting for timers to expire. The routing
protocols (OSPFv3 and EIGRP) respond immediately to these link status signals by
expediting adjacency formation or tear-down.
Link Quality Metrics Reporting
The PPPoE protocol has been extended to enable a router or radio to query or report
link quality metric information. Cisco routers have been enhanced so that OSPFv3 or
EIGRP routing protocols can factor link quality metrics into route cost calculations.
link quality metric information. Cisco routers have been enhanced so that OSPFv3 or
EIGRP routing protocols can factor link quality metrics into route cost calculations.
PPPoE Credit-based Flow Control
This extension to the PPPoE protocol allows a receiver to control the rate at which a
sender can transmit data for each PPPoE session, so that the need for queuing in the
radio is minimized.
sender can transmit data for each PPPoE session, so that the need for queuing in the
radio is minimized.
Virtual Multipoint Interface (VMI)
This Cisco router enhancement maps multiple PPPoE sessions (each representing a
point-to-point neighbor connection) into a single broadcast-capable, multi-access
interface.
point-to-point neighbor connection) into a single broadcast-capable, multi-access
interface.
Cisco IOS Release 12.4(15)XF
Cisco IOS 12.4(15)XF is a Special ED release (XED) optimized to support the MANET extensions
for router-radio links. This release is based upon the 12.4(15)T maintenance release.
Key Features
Neighbor Up/Down Signaling (OSFPv3 and EIGRP)
MANETs are highly dynamic environments. Nodes may move into, or out of, radio range at a fast
pace. Each time a node joins or leaves, the network topology must be logically reconstructed by
the routers. Routing protocols normally use timer-driven “hello” messages or neighbor timeouts to