Specifications

Release Notes for Cisco IOS Release 12.0 S

78-7130-11 Rev. B0

New and Changed Information

ICMP Rate Limiting on Engine 2 POS Line Cards

Platforms: Cisco 12000 series

The ICMP rate limiting on Engine 2 Packet-over-SONET (POS) line card feature is used to rate-limit

ICMP echo-reply traffic in order to protect hosts against Denial of Service (DoS) attacks.

Inverse Multiplexing over ATM Enhancements

Platforms: Cisco 7200 series, Cisco 7500/RSP series

The PA-A3-IMA port adapter has added the following functionalities for Cisco 7500 series routers

running Cisco IOS Release 12.0(14)S or later:

• virtual path shaping

• IP-ATM Class of Service mapping on Cisco 7500 series routers (Class-Based Weighted Fair

Queueing, Weighted Random Early Detection, Virtual Circuit Bundling)

• the available bit rate (ABR) Quality of Service class

MPLS-TE A.List Node Exclusion

Platforms: Cisco 7200 series, Cisco 7500/RSP series, Cisco 12000 series

The MPLS-TE A.List Node Exclusion feature adds the exclude-address keyword to the existing ip

explicit-path command. Multiprotocol Label Switching Traffic Engineering (MPLS TE) now accepts

exclude-address. If the exclude-address is a flooded MPLS TE link, that link will be excluded from the

contraint-based SPF routine. If the exclude-address is a flooded MPLS TE router ID, that entire node

will be excluded from the constraint-based shortest path first (SPF) routine.

MPLS TE will only accept all exclude-address or all include-address when using the explicit-path

keyword as part of the tunnel mpls traffic-eng path-option explicit command.

If the explicit keyword identifies an explicit address list that consists of exclude-addresses, that which

has been specified will be excluded, and a dynamic constraint-based SPF lookup will be performed.

Multichannel STM-1 Port Adapter for the Cisco 7500 Series Router

Platforms: Cisco 7500 series routers

The PA-MC-STM-1 is a high-speed single-port multichannel STM-1 port adapter. You can configure

the PA-MC-STM-1 as a multichannel E1/E0 STM-1 port. The PA-MC-STM-1 can be configured into

63 individual E1 links. Each E1 link can carry a single channel at full or fractional rates, or be broken

down into multiple DS0 or Nx64 Kbps rates. The PA-MC-STM-1 supports up to 3 TUG-3/AU-3

transport slots numbered 1 to 3. You can configure each TUG-3/AU-3 to carry 21 SDH TU-12s. Each

SDH TU-12 is capable of carrying a channelized E1 frame, which can be to Nx64 Kbps time slots. See

the following document for further information:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120limit/120s/120s14/12

s_stm.htm