Specifications

1215
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S
Workaround: There is no workaround. Ensure that you use the latest Field Diagnostics image that
supports the 2xOc192 POS line card.
• CSCed15797
Symptoms: On Engine 2 (E2) n-port OC3 line cards for the Cisco 12000 series router, the pos delay
triggers path router configuration command does not implement the specified delay. This results in
the link being brought down for Path Alarm Indication Signal (PAIS) or Path Remote Defect
Indication (PRDI) defects whose duration is smaller than the specified delay time.
Conditions: This symptom is observed in all releases of Cisco IOS Release 12.0 ST and in all
releases of 12.0 S beginning with Release 12.0(22)S.
Workaround: There is no workaround.
• CSCed15913
Symptoms: An Engine 0 12xE3 line card may reload when changing the MTU on an Engine 2
3x1GE line card.
Conditions: This symptom is observed on a Cisco 12416 router that is running the gsr-p-mz image
of Cisco IOS Release 12.0(26)S.
Workaround: Ensure there is no traffic going through the Engine 0 12xE3 and Engine 2 3x1Ge line
cards when attempting to change the MTU.
• CSCed16284
Symptoms: Packet precedence on transmit is incorrectly remaining the same (set-prec-transmit
action is not working).
Conditions: Interface configuration includes Rate Limiting that sets precedence to change on
transmit with rate limit command that includes conform-action set-prec-transmit 1 and
exceed-action set-prec-transmit 0. The Packets received are initially at Precedence of 2, but instead
of changing to either a Precedence of 1 or a Precedence of 0, all packets are transmitted still at a
Precedence of 2.
Workaround: There is no workaround.
• CSCed16989
Symptoms: The standby RP of a Cisco 7500 series may reload.
Conditions: This symptom is observed on a Cisco 7500 series that is configured with an ATM
local-switching autoprovisioned L2 transport PVC when you enter the connect command.
Workaround: Manually configure an L2 transport PVC before you enter the connect command.
• CSCed19210
Symptoms: MLP bundles and their associated line protocol interfaces may flap, and the data path
may be broken.
Conditions: This symptom is specific to a Cisco 12000 series Engine 3 line card that supports MLP.
Workaround: There is no workaround.
• CSCed20042
Symptoms: A Cisco router may unexpectedly reload if IPv6 encounters a routing loop, and IPv6
CEF is enabled.
Conditions: This symptom occurs under the following conditions:
– IPv6 must be enabled
– IPv6 CEF must be enabled