Specifications
61
Caveats for Cisco IOS Release 12.0
78-6455-12
Resolved Caveats—Cisco IOS Release 12.0(8)
IP Routing Protocols
• CSCdm82319
If you run an H323 application, such as NetMeeting, the deletion of Network Address Translation
(NAT) entries created for H323 will not free the allocated buffer completely and will cause a
memory leak. The NAT entry data structure that tracks H225 and H245 information is not being
freed when the NAT entry is deleted. There is no workaround.
• CSCdp04554
Enhanced Interior Gateway Routing Protocol (EIGRP) might derive the metric of a summary from
a route outside the summary that has the same prefix and shorter masks. There is no workaround.
• CSCdp05306
After a link flap, the summary route might not appear in the routing table even though it appears in
the OSPF topology table.
Workaround: Restart the OSPF process, or reload the router.
• CSCdp05327
The following entries might be added to the running configuration of a Cisco router even though
Network Address Translation (NAT) is not configured:
ip nat translation timeout never
ip nat translation tcp-timeout never
ip nat translation udp-timeout never
ip nat translation finrst-timeout never
ip nat translation syn-timeout never
ip nat translation dns-timeout never
ip nat translation icmp-timeout never
There is no workaround.
• CSCdp15166
When fast policy switching is enabled on dialer interface on a Cisco router that is running
Cisco IOS Release 11.3(9)T or 12.0(7) a packet is not fast switched, and process switching is used
instead. There is no workaround.
• CSCdp27183
A Resource Reservation Protocol (RSVP) message will be dropped if the flags or reserved fields in
the common header are not set to zero. In this situation, you will not be able to operate within
implementations that use these fields for new features. There is no workaround.
ISO CLNS
• CSCdm48924
While displaying the output of the show isis topology command, a Cisco router might reload.
There is no workaround.
• CSCdp12169
Cisco IOS Release 12.0(6.2)T might break Point-to-Point Protocol (PPP) over ATM on a
Cisco 4500 router with AAL5SNAP encapsulation enabled. There is no workaround.