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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(32)S8
NHRP can operate in three ways: at the link layer (Layer 2), over Generic Routing Encapsulation
(GRE) and multipoint GRE (mGRE) tunnels and directly on IP (IP protocol number 54). This
vulnerability affects all three methods of operation.
NHRP is not enabled by default for Cisco IOS.
This vulnerability is addressed by Cisco bug IDs CSCin95836 for non-12.2 mainline releases and
CSCsi23231 for Cisco IOS Release 12.2 mainline releases.
This advisory is posted at
http://www.cisco.com/en/US/products/products_security_advisory09186a008089963b.shtml.
• CSCse07118
Symptoms: A router may reload unexpectedly when you enter the transmit-interface interface
configuration command on an interface that has a point-to-point OSPF adjacency.
Conditions: This symptom is observed on a Cisco router when the OSPF network type is configured
as point-to-point, either because the interface is, for example, a serial interface, or because the ip
ospf network point-to-point interface configuration command is enabled on the interface.
Workaround: When there is an OSPF adjacency on the interface that is being configured, first enter
the shutdown interface configuration command before you enter the transmit-interface interface
configuration command.
• CSCsh53327
Symptoms: It has been observed that Cisco IOS Command Line Interface (CLI) allows user to enter
multiple entries of no ip split-horizon eigrp AS# when the interface has not yet been assigned to a
VRF interface.
Then when the interface is assigned to a VRF, these "no ip split-horizon eigrp AS#" entries stay
under the interface and are not checked against the EIGRP AS number to which this interface
belong.
This behavior has been observed with multiple Cisco IOS version included Cisco IOS
Release 12.0(32)S5:
interface ATM6/0.64 point-to-point ip vrf forwarding NETWORK
ip address 10.150.10.113 255.255.255.252
no ip directed-broadcast
ip mtu 1500
no ip split-horizon eigrp 100
no ip split-horizon eigrp 1
no ip split-horizon eigrp 2
no ip split-horizon eigrp 4
no atm enable-ilmi-trap pvc 1/64
Workaround: before assigning an interface to a VRF, make sure no protocol configuration exist
under the interface by using either the "no" statement command or the command itself to get the
configuration into a default state.
• CSCsh68376
Symptoms: CBB route reflector advertising the route with different next hop, and IPFR route
reflector lsanca92c14-0391 still keeps the old route in the routing table. Soft clear needed to perform
on lsanca92c14-0391 to refresh the route.
Conditions: The function /jointfilesconvert/415844/bgp_suppress_ebgp_update() does not check if the neighbor has the flag
BN_AF_NHOP_UNCHANGED. As a result, we supress the EBGP update incorrectly.
Workaround: clear soft in
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