Cisco Cisco IOS Software Releases 12.2 MC
11
Release Notes for Cisco MWR 1941-DC Mobile Wireless Edge Router for Cisco IOS Release 12.2(15)MC2g
OL-13984-16
Caveats in Cisco IOS Release 12.2(15)MC2e
Open Caveats
This section lists the caveats that are open in Cisco Release 12.2(15)MC2f.
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CSCea73056
Description: The MWFM or any other NMS system does not get important SNMP traps generated
during failover. Up to 50% of the traps are lost.
during failover. Up to 50% of the traps are lost.
During failover the Cisco MWR 1900 router software opens the T1/E1 relays on an active router
without taking down the Multilink interface first. The Cisco MWR 1900 routing software keeps
sending packets into the disconnected interface for the next few seconds until the interface Multilink
goes down. Traps are sent and lost. Traps generated after the link is declared down are kept in the
SNMP queue waiting to be routing in order to get restored.
without taking down the Multilink interface first. The Cisco MWR 1900 routing software keeps
sending packets into the disconnected interface for the next few seconds until the interface Multilink
goes down. Traps are sent and lost. Traps generated after the link is declared down are kept in the
SNMP queue waiting to be routing in order to get restored.
Workaround: There is currently no workaround.
Resolved Caveats
This section lists the caveats that are resolved in Cisco Release 12.2(15)MC2f.
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CSCsd25168
Description: The insertion of a GLI card to one of the Fast Ethernet (FE) ports of the Cisco
MWR1900 router could cause the Multilink PPP interface to flap leading to a traffic outage for few
seconds. A Hot Standby Routing Protocol (HSRP) swap over will also happen.
MWR1900 router could cause the Multilink PPP interface to flap leading to a traffic outage for few
seconds. A Hot Standby Routing Protocol (HSRP) swap over will also happen.
The Cisco MWR1900 routers are configured for HSRP redundancy and a GLI card insertion on the
active Cisco MWR1900 router would cause the mlppp interface to go DOWN and come UP and
would eventually cause the active Cisco MWR1900 router to become standby, and the standby router
would then become the active router.
active Cisco MWR1900 router would cause the mlppp interface to go DOWN and come UP and
would eventually cause the active Cisco MWR1900 router to become standby, and the standby router
would then become the active router.
Workaround: There is no workaround to avoid the Multilink PPP interface from going down.
However, to avoid HSRP swap over, the standby <number> preempt delay <seconds> commands
can be configured. A value of 3 seconds is recommended.
However, to avoid HSRP swap over, the standby <number> preempt delay <seconds> commands
can be configured. A value of 3 seconds is recommended.
Caveats in Cisco IOS Release 12.2(15)MC2e
The following sections list and describe the open and closed caveats for the Cisco MWR 1941-DC router
running Cisco IOS Release 12.2(15)MC2e. Only severity 1 through 3 caveats are included.
running Cisco IOS Release 12.2(15)MC2e. Only severity 1 through 3 caveats are included.
Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most
serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these
three severity levels.
serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the least serious of these
three severity levels.
Caveats in Cisco IOS Releases 12.2 and 12.2 T are also in Cisco IOS Release 12.2(15)MC2e. For
information on caveats in Cisco IOS Release 12.2, see Caveats for Cisco IOS Release 12.2. For
information on caveats in Cisco IOS Release 12.2 T, see Caveats for Cisco IOS Release 12.2 T. These
two documents list severity 1 and 2 caveats and are located on CCO and the Documentation DVD.
information on caveats in Cisco IOS Release 12.2, see Caveats for Cisco IOS Release 12.2. For
information on caveats in Cisco IOS Release 12.2 T, see Caveats for Cisco IOS Release 12.2 T. These
two documents list severity 1 and 2 caveats and are located on CCO and the Documentation DVD.
Note
If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for
any release. To reach Bug Navigator II, Login to Cisco.com and click Software Center: Cisco IOS
Software: Cisco Bugtool Navigator II. Another option is to go directly to
http://www.cisco.com/support/bugtools.
any release. To reach Bug Navigator II, Login to Cisco.com and click Software Center: Cisco IOS
Software: Cisco Bugtool Navigator II. Another option is to go directly to
http://www.cisco.com/support/bugtools.