Cisco Cisco IOS Software Release 12.4(23) Notas de publicación
585
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(7d)
A list of the affected releases can be found at
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCsa45148. Cisco IOS
software releases that are not listed in the “First Fixed-in Version” field at this location are not
affected.
http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCsa45148. Cisco IOS
software releases that are not listed in the “First Fixed-in Version” field at this location are not
affected.
Temporary Workaround: Each time after you have reloaded the router, disable the command by
entering no tacacs-server directed-request.
entering no tacacs-server directed-request.
•
CSCsg48183
Symptoms: A router may unexpectedly send an ARP request from all its active interfaces to the
nexthop of the network of an SNMP server.
nexthop of the network of an SNMP server.
Conditions: This symptom is observed on a Cisco router that has the snmp-server host command
enabled after any of the following actions occur:
enabled after any of the following actions occur:
–
Reload the router.
–
A switchover of the active RP occurs.
–
Enter the redundancy force-switchover main-cpu command.
Workaround: There is no workaround.
IP Routing Protocols
•
CSCsa87034
Symptoms: When you attempt to clear the routing table, the neighbor is brought down instead.
Conditions: This symptom is observed when you enter the clear bgp ipv4 unicast * or clear bgp
ipv6 unicast * command, causing respectively the IPv4 neighbor or IPv6 neighbor to be brought
down.
ipv6 unicast * command, causing respectively the IPv4 neighbor or IPv6 neighbor to be brought
down.
Workaround: There is no workaround.
•
CSCsc52732
Symptoms: When PIM is enabled or disabled on a subinterface, multicast traffic that is received on
another subinterface of the same main interface is dropped for a moment.
another subinterface of the same main interface is dropped for a moment.
Conditions: This symptom is observed on a Cisco router that is configured for IP Multicast. The
higher the multicast traffic rate is, the more packets are dropped.
higher the multicast traffic rate is, the more packets are dropped.
Workaround: There is no workaround.
•
CSCse98590
Symptoms: The router will display SYS-2-MALLOCFAIL messages on the console, and various
protocols will operate erratically as a result of a low memory condition.
protocols will operate erratically as a result of a low memory condition.
Conditions: When a router has to duplicate incoming IPv4 multicast packets for transmission on
multiple interfaces, and one of those interfaces is a GRE tunnel operating in GRE IPv6 mode, then
memory used to duplicate that packet stream will not be freed. As a result, the router will soon
exhaust all available memory.
multiple interfaces, and one of those interfaces is a GRE tunnel operating in GRE IPv6 mode, then
memory used to duplicate that packet stream will not be freed. As a result, the router will soon
exhaust all available memory.
Workaround: The router will not exhaust memory if packets do not need to be duplicated (for
example, if they enter on one interface and only exit the box through another interface), or if they
do not need to duplicate to a tunnel interface that is running GRE over IPv6 (for example, tunnel
mode GRE IPv4 does not have this problem).
example, if they enter on one interface and only exit the box through another interface), or if they
do not need to duplicate to a tunnel interface that is running GRE over IPv6 (for example, tunnel
mode GRE IPv4 does not have this problem).