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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)S10
Conditions: Occurs on a Cisco GSR router running Cisco IOS Release 12.0(32)S7 and later when
TE tunnels are configured.
Workaround: There is no workaround.
• CSCsk81725
Symptoms: All E6 line cards are holding incorrect output slot information in hardware CEF for
default route. At the same time, other E4+ and E2 LCs have no problem with hardware CEF.
Conditions: Unknown.
Workaround: Use the clear ip route 0.0.0.0 command.
• CSCsk82701
Symptoms: Hot Standby Routing Protocol (HSRP) Virtual IP address is unreachable. IP address
assigned to the interfaces is reachable.
Conditions: Problem was seen in GSRs with different SPAs. Problem occurs only when line card is
installed for the first time or if it is moved between slots. Problem only occurs if the same interface
is both configured for HSRP and assigned to VPN routing/forwarding (VRF).
interface GigabitEthernet3/0/0.5 ip vrf forwarding ip address X.X.X.2 X.X.X.X standby 1 ip
X.X.X.1 standby 1 priority 110 standby 1 preempt
Workaround: Reload active and standby router as if you reload only active there is a chance standby
router once become active may hit the problem. Or, remove the HSRP configuration before moving
the line card.
• CSCsk83652
Symptoms: Ping from CE to PE fails
Conditions: Occurs when multilink bundle is removed from SIP 401/501/601/600 using no
multilink-group and added to SIP 400/6CT3 LC/2CHOC3 LC.
Workaround: Use a new multilink bundle (multilink2) when removing member links from the SIP
401/501/601/600 (multilink1) and adding links from SIP 400 / 6CT3 LC / 2CHOC3 LC . It is not
sufficient to delete the bundle (multilink1) and add the bundle configuration back with the same
bundle name as it does not reset the layer 2 information.
• CSCsk99530
Symptoms: The MPLS forwarding table has an untagged outgoing entry for a VPNv4 prefix in a
CSC case.
Conditions: This is an LDP/IGP (OSPF etc.) based CSC-PE. The VPNv4 prefix shall have a
local/redistributed (PE-CE OSPF etc.) path as well as an iBGP path. If the CE path is toggled and
then there is a LABEL ONLY change from the iBGP neighbor, the issue will be seen. BGP will end
up programming “Untagged” for the local/redistributed prefix, overwriting what is given by LDP.
Workaround: There is no real workaround. To clear the problem, issue a clear ip route command
for the vrf-prefix in question. If there are redundant paired PEs, make sure to clear the problem on
both routers with the clear ip route command.
• CSCsl09752
Symptoms: Packet drops occurring on PE router.
Conditions: Occurs after sending traffic from VPN routing/forwarding (VRF). Traffic is stopped
until the mroute entries get cleared. When traffic is sent from core, packets are dropped.
Workaround: Reload the line card.
• CSCsl11335
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