
714
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
Symptom: After an SSO mode switchover with PPPoX sessions the new active engine may display
the following error message for one or more Virtual-Access interfaces:
%COMMON_FIB-3-FIBIDBINCONS2: An internal software error occurred. Virtual-Access1.1
linked to wrong idb Virtual-Access1.1.
Conditions: The symptom occurs on the active engine after an SSO switchover when PPPoX
sessions were active on the previously active engine.
Workaround: There is no workaround.
Further Problem Description: This error is not unique to any particular type of broadband PPP
session.
• CSCsl36241
Symptoms: The standby RP/SP running Cisco IOS Release 12.2(33)SRB gets reset continuously
during the ISSU operations when the active RP/SP is running Cisco IOS Release 12.2(33)SRC.
Conditions: It happens during ISSU loadversion or runversion operations if the configuration
contains anything over MPLS (AToM) configuration.
Workaround: There is no workaround.
• CSCsl38029
Symptoms: After several thousand virtual private dial-up network (VPDN) sessions are created and
torn down successfully, the router cannot create any new sessions. Either the L2TP Access
Concentrator (LAC) or the L2TP Network Server (LNS) may fail with error message "VPDN Failed
to obtain session handle." This error message will be seen only when you enable the debug l2tp
error command.
Conditions: The maximum number of successful sessions before failure varies by platform.
Workaround: Reload the router.
• CSCsl39130
Symptoms: Spurious memory access is seen while establishing L2TP tunnel (PPPoE-relay). The
tunnel is never established.
Conditions: Occurs on routers running Cisco IOS Release 12.4(18.2)PI1 when configuring L2TP
active discovery relay for PPPoE and establishing PPPoE sessions from client.
Workaround: There is no workaround.
• CSCsl39860
Symptoms: Standby SUP keeps rebooting with stateful switchover (SSO) after running some SNMP
CLI commands.
Conditions: The following sequence of commands result in this issue.
1. Execute the following CLI commands on the switch:
snmp-server host <a.b.c.d> public
snmp mib notification-log default
snmp mib notification-log globalsize 10001
snmp mib notification-log globalsize 10000
2. Execute SSO. The standby will continue to reboot.
Workaround: Do not use notification log MIB
• CSCsl40687
Symptoms: Router reloads due to a bus error. This occurs with the following messages:
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