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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.345 ROUTE-OVERFLOW
2.7.345 ROUTE-OVERFLOW
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Objects: NE
DWDM Logical Object: NE regardless of MSTP or MSPP
The ROUTE-OVERFLOW indicates the condition when the OSPF routing table exceeds 700 routes. The
symptoms for this condition are loss of visibility to a node or network, inability to access a node using
CTC, CTM, Telnet, Ping, and so on.
Clear the ROUTE-OVERFLOW Condition
Step 1 Reconfigure the OSPF network to less than 700 routes.
2.7.346 RPR-PASSTHR
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: RPRIF
The IEEE 802.17 b-based RPR Interface in Pass-Through Mode condition indicates that an ML card’s
IEEE 802.17 b-based RPR interface is not participating in a ring. Instead, the card is behaving like a
passive device that allows the signal to transit but does not manipulate it. Pass-through mode itself is
hitless.
You can manually place an ML card into (or out of) pass-through mode using the Cisco IOS CLI
command SHUTDOWN (SHUT) for such reasons as adding, removing, or servicing the node. To do so
is hitless.
The ML-1000 automatically enters pass-through mode if either of the following conditions is true:
• Redundant interconnect (RI) is configured and the ML card is in primary mode (that is, single traffic
queue mode), standby state.
• RI is configured and the RI interface goes down during a “WTR” alarm on page 2-258, while the
ML card is in secondary mode (that is, dual traffic queue mode) on a Cisco proprietary RPR ring.
Note For GFP and HDLC mode, the ML card shutdown (SHUT) command causes an “AIS-P” alarm on
page 2-37 to be sent to the peer. But in IEEE 802.17b-based RPR mode, AIS-P is not inserted toward the
peer.
The RPR-PASSTHR condition suppresses the following alarms:
• FORCED-REQ, page 112
• LINK-KEEPALIVE, page 141
• MAN-REQ, page 178
• MAX-STATIONS, page 180
• RSV-RT-EXCD-RINGLET0, page 203
• RSV-RT-EXCD-RINGLET1, page 204
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