Specifications

Features in 291-11 65
Version 291-18
C613-10488-00 REV Q
CR00016978 STP, MSTP,
Switch
- STP and MSTP debugging has been enhanced to:
■ make it easier to see state information, and
■ only display information about Topology Change messages.
For command syntax and output details, see “STP and MSTP debugging
enhancements (CR00016978)” on page 162.
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CR00017018 Classifier,
DHCP
snooping
- This enhancement enables you to act on traffic that is received on an uplink
port and is destined for a particular DHCP client. You can use the new
functionality, for example, to track how much traffic each user receives via
an uplink port. This enables you to track traffic usage at the uplink port,
even if destination IP addresses are dynamically assigned by DHCP and
traffic for multiple users is in the same VLAN.
For command syntax and more information, see “Acting on traffic destined
for a particular DHCP client (CR00017018)” on page 165.
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CR00018144 IPv6 - Routing Header type 0 has been deprecated for IPv6 due to security
concerns, as described in the Internet Draft at www.ietf.org/internet-drafts/
draft-ietf-ipv6-deprecate-rh0-01.txt.
When the router or switch receives a packet addressed to it that contains
RH type 0, it now responds as if it does not understand the header, as
specified in RFC 2460. That is, it ignores the header if the number of
segments left is zero, or it replies to the sender with an ICMPv6 incorrect
parameters error message.
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CR Module Level Description
AR400 AR7x5 AR7x0S Rapier i Rapier w AT-8800 AT-8600 AT-8700XL x900-48 AT- 9900 AT-9800