Specifications
79
Release Notes for Cisco IOS Release 12.0 S
78-7130-11 Rev. B0
Caveats
• CSCdr48014
Open Shortest Path First (OSPF) updates might be corrupted on a Cisco 7500 series router using
Multiprotocol Label Switching (MPLS) switching with Cisco Express Forwarding (CEF) output
features enabled (including "service policy output"). IP routes are temporarily deleted from the IP
routing table and a loss of connectivity might occur.
Workaround: Configure the ip cef global configuration command. Then, execute the copy running
start command, and reload.
Alternative workaround: Enter the memory cache-policy io uncached command. However,
entering this command might sacrifice packet switching performance.
• CSCdr49601
A Gigabit Ethernet Interface Processor (GEIP) on a Cisco 7500 series router might experience
receiving problems that cause the router to pause indefinitely.
Workaround: Enter the shutdown command followed by the no shutdown command on the gigabit
interface. If the problem persists, perform a microcode reload on the router to disrupt all interfaces.
• CSCdr51003
Enabling or disabling output access control lists (ACLs) might cause a 3-port Gigabit Ethernet (GE)
card in the router to restart. There is no workaround.
• CSCdr52838
PA-MC-8T1 reported firmware hung and then crashed the router. There is no workaround.
• CSCdr52879
A Cisco 12000 series Gigabit Switch Router (GSR) that is running Cisco IOS Release 12.0(11)S
might exhibit error messages similar to the following:
SLOT 6:00:21:00: %LC-3-MACSTR: Adj/midb (MDS 224.101.1.1) incorrect macstring:
length=12, macstr word=0x00180100
-Traceback= 402AE924 402F9BD8 402F5A5C 402F7D84 402F7E70 402F7638 4009B974 4009B960
In this situation, IP Multicast on ATM cards might not function properly. This condition only
affects ATM cards. There is no workaround.
• CSCdr52927
A channelized OC-12 STS-3c/STS-1 line card might not properly create internal loops. In this
situation, no tests will run through the looped OC-3. There is no workaround.
• CSCdr53138
A Gigabit Ethernet interface might remain in an up/up state with no cable attached when running
Cisco IOS Release 12.1(2). This condition can cause problems when running Hot Standby Router
Protocol (HSRP) with the Gigabit Ethernet interface and might also cause routing black holes.
There is no workaround.
A Gigabit Ethernet interface might remain in an up/up state with no cable attached when running
Cisco IOS Release 12.1(2). This condition can cause problems when running Hot Standby Routing
Protocol (HSRP). The result is that if the active router fails, the backup router will take over;
however, any traffic destined for the local segment from the original active router will be dropped.
There is no workaround.