Cisco Cisco IOS Software Release 12.0 S Release Notes
2391
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(6)S
configuration while the Versatile Interface Processor (VIP) or Route/Switch Processor (RSP) is
under a heavy traffic load:
under a heavy traffic load:
ipfib_policy_forward vip_ip_fib_flow amdfe_rx_interrupt s_amdfe_chec
k
This situation occurs when the RSP is running with a VIP2-50 Versatile Interface Processor, a Fast
Ethernet port adaptor, and PA-A3 and is configured with distributed Cisco Express Forwarding
(dCEF), policy routing, and NetFlow.
Ethernet port adaptor, and PA-A3 and is configured with distributed Cisco Express Forwarding
(dCEF), policy routing, and NetFlow.
Workaround: Avoid reloading the configuration with the copy tftp running command.
•
CSCdm51092
A Cisco router might reload if you enter the same no ip msdp mesh-group foo peer-address
command twice. There is no workaround.
command twice. There is no workaround.
•
CSCdm59659
When “debug ip icmp” is enabled on a line card in a Cisco 12000 series Internet router, it cannot be
disabled. There is no workaround.
disabled. There is no workaround.
•
CSCdm60244
A Cisco router might reload if you perform a router_id change or issue the
clear ip bgp {*} command when Multicast Border Gateway Protocol (MBGP) is enabled.
clear ip bgp {*} command when Multicast Border Gateway Protocol (MBGP) is enabled.
Workaround: Avoid issuing the clear ip bgp {*} command or changing router_id.
•
CSCdm94032
Border Gateway Protocol (BGP) routes might not be withdrawn if deterministic med is not enabled.
Workaround: Configure deterministic med by issuing the bgp deterministic med command.
ISO CLNS
•
CSCdm61381
A Cisco 2500 series router might reload if you issue the no router isis [tag] command. There is no
workaround.
workaround.
Miscellaneous
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CSCdm09656
After you load the image on a Cisco 7500 series router that is running Cisco IOS Release 12.0 S and
Release 12.0 T, issuing the no shutdown command on a T1 controller that is up causes the T1
controller to go down. Channels created under that controller also go down. This only happens with
T1 and does not occur on Cisco 7200 series routers.
Release 12.0 T, issuing the no shutdown command on a T1 controller that is up causes the T1
controller to go down. Channels created under that controller also go down. This only happens with
T1 and does not occur on Cisco 7200 series routers.
Workaround: Issue the shutdown command followed by the no shutdown command on the T1
controller. If this fails, perform a microcode reload to bring the controller back up.
controller. If this fails, perform a microcode reload to bring the controller back up.
•
CSCdm12259
The rate limit on a Internet router might not work properly if input Committed Access Rate (CAR)
based on QoS groups is configured. There is no workaround.
based on QoS groups is configured. There is no workaround.
•
CSCdm66427
If you use the “log” keyword in an Access Control List (ACL) that is used to filter routes, it might
result in alignment errors that cause increased CPU utilization and interfere with normal router
operation.
result in alignment errors that cause increased CPU utilization and interfere with normal router
operation.