Specifications

50
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(9)
configuration command. When a network link goes up or down, one of the routers attached to that
link might start sending DECnet traffic down the wrong route. You can enter the
show decnet traffic EXEC command to show the number of messages that have been discarded
with the “too many visits” count. If you enter the show decnet route configuration command, you
can check the routes selected by the router.
Workaround: Reduce the time in the decnet routing-timer seconds interface configuration
command to reduce the time taken for the network to converge.
IBM Connectivity
• CSCdm77914
During a rare timing window when the multiple downstream devices are simultaneously
deactivated, the Advanced Peer-to-Peer Networking (APPN) router might cause the TP that
processes the encapsulated messages received on the conloser DLUR/Dependent LU Server
(DLUS) pipe session to pause indefinitely. Once the TP is paused, the DLUR may have some
DLUR-PUs and DLUR-LUs that appear to be in a permanently stopped state. The corresponding
virtual telecommunications access method (VTAM) resources remain in PDACP or PUSB1 states.
Workaround: Restart the APPN subsystem on the router.
• CSCdm78005
A Cisco 4500 router might experience memory alignment errors in Advanced Peer-to-Peer
Networking (APPN). There is no workaround.
• CSCdm78880
A Cisco 4700 router that is configured for data-link switching (DLSw) with Dependent LU
Requester (DLUR) and Advanced Peer-to-Peer Networking (APPN) might reload after you issue
the show version command because of an SegV exception. There is no workaround.
• CSCdp09919
Remote source-route bridging (RSRB) might change frame types. This situation occurs on Cisco
routers that are running RSRB where one side of the RSRB is running any Cisco IOS release prior
to Cisco IOS Release 12.0 and the other side is running Cisco IOS Release 12.0. The frame that is
moving along the source-route translational bridge (SR/TLB) and the RSRB bridge might change
from an Ethernet Type II frame to an IEEE802.3 Ethernet frame.
Workaround: Configure the 90-compatible option by entering the
source-bridge transparent ring-group seudo-ring bridge-number tb-group [90-compatible]
global configuration command.
• CSCdp09939
A Cisco router might reload because of a bus error. There is no workaround.
• CSCdp23809
A Cisco router that is running Block Serial Tunneling (BSTUN) might experience an input queue
wedge. Reloading the router will temporarily fix the situation. There is no workaround.
• CSCdp24741
A Cisco router that is configured for Advanced Peer-to-Peer Networking (APPN) might experience
80 percent to 90 percent CPU utilization by the lrp00 process. There is no workaround.
• CSCdp53919
Hundreds of alignment corrections on bridging processes might cause a Cisco router (including
console access) to pause indefinitely. There is no workaround.