Specifications

1357
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S1
Workaround: There is no workaround.
• CSCed08696
This umbrella caveat affects the behavior of path triggers, and of Automatic Protection Switching
(APS) with PPP and Frame Relay (FR) encapsulation.
- CSCec70879:
Symptoms: Cisco 12000 series POS APS interfaces do not permit the configuration of path trigger
specifications on APS interfaces.
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: There is no workaround.
- CSCdu45201:
Symptoms: When the encapsulation ppp interface configuration command is configured with
Cisco 12000 series Packet-over-SONET (POS) APS interfaces, some APS operations may result in
inappropriate protocol state. This may stop all traffic flow through the APS pair or duplicate all
packets.
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: There is no workaround.
- CSCec72228:
Symptoms: When the encapsulation frame-relay interface configuration command is configured
with Cisco 12000 series POS APS interfaces, some APS operations may result in interfaces that have
been selected by APS being set to “protocol down” by FR. This behavior can result in the loss of all
traffic over the APS pair.
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: There is no workaround.
• CSCed14064
Symptoms: On a Cisco router that is configured with LLQ, there is queueing on the real time queue.
Conditions: This symptom is observed on a Cisco 10000 ESR that is configured with LLQ.
Workaround: There is no workaround.
• CSCed20042
Symptoms: A Cisco router may unexpectedly reload if IPv6 encounters a routing loop, and IPv6
CEF is enabled.
Conditions: This symptom occurs under the following conditions:
– IPv6 must be enabled
– IPv6 CEF must be enabled
– The IPv6 RIB must have recursive entries that form a loop, for example:
Router# show ipv6 route
IPv6 Routing Table - 9 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
B ::/0 [200/0]
via 2::2