Specifications

71
Release Notes for Cisco IOS Release 12.0 S
78-7130-11 Rev. B0
Caveats
• CSCdr49601
A Gigabit Ethernet Interface Processor (GEIP) on a Cisco 7500 series router may experience
receiving problems that cause the router to pause indefinitely.
Workaround: Disable dCEF on the GE interface.
• CSCdr57631
If both access control lists (ACLs) and Multiprotocol Label Switching (MPLS) are configured on
a Cisco 12000 series Gigabit Switch Router (GSR) with a 3-Port Gigabit Ethernet line card, traffic
may not pass through that interface. There is no workaround.
• CSCdr62168
Upon system initialization, ATM permanent virtual circuits (PVCs) are left in the inactive state and
do not change to the active state unless the user issues a shutdown/no shutdown of the associated
ATM interface in configuration mode.
Workaround: Reinitialize the interfaces manually.
• CSCdr65006
A Cisco 12000 series Gigabit Switch Router (GSR) may fail to properly forward Multiprotocol
Label Switching (MPLS)-encapsulated frames over Gigabit Ethernet line cards. In this condition,
the traffic sent on to a tunnel head over the Gigabit Ethernet interface is dropped, and any
MPLS-encapsulated frame forwarded by the GSR over a Gigabit Ethernet line card is sent with an
invalid or garbled destination MAC address and is not received. There is no workaround.
• CSCdr65544
A Versatile Interface Processor (VIP) may reload after fragmenting packets if distributed Cisco
Express Forwarding (dCEF) is enabled. The same condition may occur with a Cisco 7200 series
router if CEF is enabled. There is no workaround.
• CSCdr67801
A Cisco 7200 series router or a Cisco 7500/RSP series router with a PA-A3 ATM port adapter may
reload because of a bus error that points to an 0x50000000 address or an 0x08000000 address.
These reloads occur after the PA-A3 driver has received a packet and attempts to process it.
Workaround: Disable Cisco Express Forwarding (CEF) by entering the no ip cef global
configuration command on the Cisco 7200 series router or by entering the no ip cef [distributed]
global configuration command on the Cisco 7500/RSP series router.
• CSCdr68932
Configuring an output access control list (ACL) on a Cisco 12000 series Gigabit Switch Router
(GSR) with a 3-Port Gigabit Ethernet line card may result in the reload of the 3-Port Gigabit
Ethernet line card if the line card is also performing tag imposition and the ACL contains a rule
regarding the packet’s source port, type of service, precedence, logging, or Internet Group
Management Protocol (IGMP). There is no workaround.
• CSCdr75997
CSCdm94333, which was integrated in Cisco IOS Release 12.0(9.6)S, introduced a new version of
the automatic protection switching (APS) protect group protocol that required both working and
protect routers to be upgraded simultaneously. The fix for CSCdr75997 relaxes this restriction by
supporting interoperability between systems that are running different versions of the APS protocol
so that working and protect can be upgraded independently.