Specifications

1073
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S6
Conditions: This symptom is observed when the Engine 6 interface forwards these packets as IP
packets even though there is a labeled path to the BGP next hop. The output of the show cef
command shows that the router uses the MPLS labeled path but the Engine 6 hardware is
programmed to forward the packets as IP packets instead of MPLS packets. The next router that
receives these IP packets may drop them because the next router may be unaware of the iBGP route.
Workaround: There is no workaround.
• CSCei85758
Symptoms: Traffic is not forwarded when you enter the hw-module slot slot-number np mode
feature command on an ISE line card that is configured for MVPN.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S4 and that functions as a PE router that performs encapsulation.
Workaround: There is no workaround.
• CSCei90536
Symptoms: mVPN packets have corrupted encapsulation headers.
Conditions: This symptom is observed on a Cisco 12000 series that has a channelized ISE ingress
line card when packets are replicates to a VRF interface on the ingress line card, to a VRF interface
on another line card, and to a core interface on a third line card. This symptom occurs only after
some redundancy switchovers.
Workaround: Reload the line card.
• CSCei90588
Symptoms: A bad checksum error, bad LLS TV length error, or both are reported on a router that is
configured for OSPF and BGP. These protocols or other configured protocols may flap during the
errors, and data packets that are sent to the PRP may be lost.
Conditions: These symptoms are observed on a Cisco 12000 series that is configured with a PRP-1
when the following conditions are present:
– OSPF, BGP, and other control protocols are configured with scaled routes and peers.
– Congestion occurs on the PRP-1 because control packets are targeted to the PRP-1 or because
other packets are sent to one of the IP addresses of the router and are terminated on the PRP-1.
This situation occurs, for example, when IP ping packets are directed towards one of the
loopback addresses and are terminated on the PRP-1.
Workaround: There is no workaround.
• CSCej00097
Symptoms: Interfaces on a Cisco 10000 series 1-port channelized OC-12 line card may take too
much time to recover after an PRE switchover has occurred.
Conditions: This symptom is observed when the line card is configured with E1 interfaces that
function in SDH mode and is most likely to occur when the line card was previously configured with
T1 interfaces that functioned in SONET mode. When a PRE switchover occurs, it may take as long
as 60 seconds for all of the interfaces to come back up.
Workaround: There is no workaround.
• CSCej01743
Symptoms: Traffic drops may occur when traffic is sent over MFR or Frame Relay links.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(28)S1 or a later release and that is configured for software forwarding.