Specifications

1130
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S2
Conditions: This symptom is observed on a Cisco 12000 series when a large number of subinterfaces
are configured on a port channel, when you remove a member from the channel group, and when
you immediately afterwards reload microcode onto the line card. After the line card has come up,
you cannot add members to the channel group until all the subinterfaces of the removed member are
deleted. This situation occurs because of a race condition.
Workaround: Wait for a few seconds after you remove a member from the channel group before you
reload microcode onto the line card.
• CSCef06050
Symptoms: IPv6 unicast and multicast traffic may not recover on an Engine 4 plus (E4+) 1x10 GE
line card after you have performed two software OIRs of the primary CSC.
Conditions: This symptom is observed on a Cisco 12000 series that runs the gsr-p-mz image of Cisco
IOS Release 12.0S.
Workaround: Reload the E4+ 1x10 GE line card.
• CSCef06121
Symptoms: An Engine 2 3-port Gigabit Ethernet line card may stop transmitting packets.
Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(24)S6.
Workaround: Enter the hw-module reload command to enable the line card to resume transmitting
packets.
• CSCef06858
Symptoms: Line cards in a Cisco 12000 series may fail when an RP switchover occurs.
Conditions: This symptom is observed on a Cisco 12000 series that is configured with two PRPs and
that runs a Cisco IOS interim release for Release 12.0(30)S when you enter the redundancy
force-switchover command. Note, however, that this caveat is resolved in Release 12.0(30)S.
Workaround: There is no workaround.
• CSCef16379
Symptoms: An Engine 2 8-port ATM line card may not forward traffic from a VRF.
Conditions: This symptom is observed on a Cisco 12000 series when the prefix of the VRF is
imported using an MPBGP tag.
Workaround: There is no workaround.
• CSCef18515
Symptoms: After you have entered the clear cef line command, when you enter the show ip cef
command for the RP and for a line card, the output is inconsistent.
Conditions: This symptom is observed on a Cisco 12000 series that runs a Cisco IOS interim release
for Release 12.0(30)S and that is configured for Fast ReRoute.
Workaround: There is no workaround.
• CSCef22069
Symptoms: On a Cisco 12000 series that functions as an egress PE router in an MPLS VPN network,
after the customer-facing Gigabit Ethernet line card is reloaded, the ingress line card that receives
an incoming VPN label with a destination with a glean adjacency (which requires an ARP) without
a BGP session may not properly complete the adjacency, causing traffic to be dropped.
Conditions: This symptom is mostly observed with static recursive route configurations. To recover
from the symptom, manually ping the interface of the CE router from the adjacent PE router.