Cisco Cisco IOS Software Releases 12.2 B 發佈版本通知
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Release Notes for Cisco 6400 for Cisco IOS Release 12.2 B
OL-1650-02 Rev C0
Software Caveats
Note
In most NRP-2 configurations, 256 MB DRAM is adequate for up to 6500 (PPPoE) sessions. More
sessions require 512 MB DRAM.
sessions require 512 MB DRAM.
Note
The default threshold at which Cisco IOS declares a process to have run “too long” is too short for
some Cisco IOS processes, when very large numbers of sessions are established on the NRP-2. Use
the command scheduler max-task-time 20000 to increase the default threshold. This will avoid
unnecessary “CPUHOG” messages.
some Cisco IOS processes, when very large numbers of sessions are established on the NRP-2. Use
the command scheduler max-task-time 20000 to increase the default threshold. This will avoid
unnecessary “CPUHOG” messages.
NRP-1 Scalability Tuning Parameters
This section describes the scalability tuning parameters that should be used for running large numbers
of sessions on the NRP-1.
of sessions on the NRP-1.
interface ATM0/0/0
hold-queue 1000 in
hold-queue 1000 out
!
interface Virtual-Template1
keepalive 120
ppp max-configure 255
ppp timeout retry 15
ppp timeout authentication 15
hold-queue 1000 in
hold-queue 1000 out
!
interface Virtual-Template1
keepalive 120
ppp max-configure 255
ppp timeout retry 15
ppp timeout authentication 15
DHCP Option 82 Support for Routed Bridge Encapsulation
The DHCP Option 82 Support for RBE feature provides support for the Dynamic Host Configuration
Protocol (DHCP) Relay Agent Information Option (Option 82) when using ATM RBE.
Protocol (DHCP) Relay Agent Information Option (Option 82) when using ATM RBE.
Service providers are increasingly using ATM RBE to configure DSL access. The DHCP Option 82
Support for RBE feature enables those service providers to use DHCP to assign IP addresses and DHCP
Option 82 to implement IP address assignment policies such as limiting the number of IP addresses on
specific ports on specific ports or ATM VCs.
Support for RBE feature enables those service providers to use DHCP to assign IP addresses and DHCP
Option 82 to implement IP address assignment policies such as limiting the number of IP addresses on
specific ports on specific ports or ATM VCs.
The DHCP Relay Agent Information Option enables a DHCP relay agent to insert information about
itself when forwarding client-originated DHCP packets to a DHCP server. The DHCP server can use this
information to implement IP address or other parameter-assignment policies.
itself when forwarding client-originated DHCP packets to a DHCP server. The DHCP server can use this
information to implement IP address or other parameter-assignment policies.
The DHCP Option 82 Support for RBE feature uses a suboption of the DHCP Relay Agent Information
Option called Agent Remote ID. The Agent Remote ID suboption enables the DHCP relay agent to
report the ATM RBE subinterface port information to the DHCP server when a DHCP IP address request
is processed through the ATM RBE subinterface. The DHCP server can use the ATM RBE subinterface
information for making IP address assignments and security policy decisions.
Option called Agent Remote ID. The Agent Remote ID suboption enables the DHCP relay agent to
report the ATM RBE subinterface port information to the DHCP server when a DHCP IP address request
is processed through the ATM RBE subinterface. The DHCP server can use the ATM RBE subinterface
information for making IP address assignments and security policy decisions.
Software Caveats
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most
serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only
select severity 3 caveats are included in the caveats document.
serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only
select severity 3 caveats are included in the caveats document.
All caveats in Cisco IOS Release 12.2(2) T1 are also in Cisco IOS Release 12.2(2)B3.