Specifications

79
Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T
78-10811-05
New and Changed Information
H.323 Support for Virtual Interfaces
Platforms: Cisco 7200 series routers
With the H.323 Support for Virtual Interfaces feature, you can configure the IP address of the gateway,
so that the IP address included in the H.323 packet is deterministic and consistently indicates the same
address for the source.
In previous releases of the Cisco IOS software, the source address included in the H.323 packet could
vary depending on the protocol (RAS, H.225, H.245, or RTP). This makes it difficult to configure
firewall applications to work with H.323 messages.
The H.323 Support for Virtual Interfaces feature addresses that difficulty providing the capability to
explicitly configure an IP address to be used for all protocols.
Low Latency Queueing for Frame Relay
Platforms: Cisco 7200 series routers
Low Latency Queueing for Frame Relay is a feature that provides a strict priority queue (PQ) for voice
traffic and weighted fair queues for other classes of traffic.
Using this feature you can configure classes of traffic according to protocol, interface, or access lists,
and then define policy maps to establish how the classes are handled in the PQ and in weighted fair
queues.
Queues are set up on a per-permanent virtual circuit (PVC) basis: each PVC has a PQ and an assigned
number of fair queues. The fair queues are assigned weights proportional to the bandwidth requirements
of each class; a class requiring twice the bandwidth of another will have half the weight.
The PQ is policed to ensure that the fair queues are not starved of bandwidth. When you configure the
PQ, you specify in kbps the maximum amount of bandwidth available to that queue. Packets that exceed
that maximum are dropped.
Minimum Masking Ability for NetFlow Router-Based Aggregation Schemes
Platforms: Cisco 7200 series and Cisco 7500 series routers
With the Minimum Masking Ability for NetFlow Router-Based Aggregation Schemes feature you can
set a minimum mask size. The IP address that is added to the aggregation cache is added to the
maximum user-entered mask and the routing table mask.
To enable this feature on a Source Prefix or a Destination Prefix, or both, configure the desired
Minimum Mask value using the NetFlow aggregation commands. The Minimum Mask value used by
the router selects the granularity of the NetFlow data that will be collected.
The mask values range from 1 to 32. For coarse NetFlow collection granularity select a small Minimum
Mask value. For fine NetFlow collection granularity select a large Minimum Mask value.