Specifications

Features in 291-15 33
Version 291-18
C613-10488-00 REV Q
CR00021304 IPsec - Changes have been made to reduce the risk of packet loss over a VPN
under very high traffic levels and corresponding high-to-overload CPU
conditions.
■ The number of input buffers allowed for IPsec message processing has
been increased, to mitigate brief (<50ms) periods of CPU overload
where the arrival of IPsec packets can exceed the router or switch's
ability to process them in real time. This prevents packet loss.
■ Processing of the ISAKMP heartbeat between two peer routers or
switches has been given the highest priority over packet stream
encryption, to ensure that the security authorisation synchronisation is
not lost during high traffic rates. Loss of synchronisation results in packet
loss until a resynchronisation completes.
YYYY–Y–––––
CR00021752 SHDSL, GUI - It is now possible to use the web-based GUI to display SHDSL counters and
statistics on AR442S routers. The new pages are available from the left-
hand menu under:
Diagnostics > Layer 1 Counters > SHDSL Counters
Diagnostics > SHDSL Statistics.
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CR Module Level Description
AR44x / AR450 AR7x5 AR750S / AR770S Rapier i Rapier w AT-8800 AT-8600 AT-8700XL AT-8948 / x900-48 AT-9900 AT-9800