Table Of Contents
Troubleshooting
Basic Troubleshooting RPR-IEEE for the Uplink Card
Using the show controller rpr-ieee Command
Using the show controllers rpr-ieee 1/1 transceiver Command
Using the show arp Command
Verifying Clocking
PASS-THRU Mode
Verifying the PASS-THRU Mode
Using the show rpr-ieee topology Command
Using the show rpr-ieee protection Command
Fiber Misconnection
Basic Troubleshooting SRP for the Uplink Card
Using the show controller srp Command
Using the show arp Command
Verifying Clocking
PASS-THRU Mode
Verify the PASS-THRU Mode
Using the show srp topology Command
Using the show srp ips Command
Fiber Misconnection
Alarm Messages
Alarm Messages
Basic Troubleshooting Ethernet for the Access Card
Verifying Interface Configuration
FastEthernet/GigabitEthernet Is up
Line Protocol Is up
Duplex Mode Setting
Speed Mode
Output Hang
CRC Field Counters
Late Collision
Carrier Signal
Cleaning the Fiber-Optic Connections
Troubleshooting
This section contains basic troubleshooting guidance for the Cisco 10720 Internet Router and components.
•Basic Troubleshooting RPR-IEEE for the Uplink Card
•Basic Troubleshooting SRP for the Uplink Card
•Alarm Messages
•Basic Troubleshooting Ethernet for the Access Card
Basic Troubleshooting RPR-IEEE for the Uplink Card
This section provides basic troubleshooting guidelines for RPR-IEEE on the RPR/SRP uplink card. For additional information about RPR-IEEE configurations, refer to the Cisco IOS Software Configuration for the Cisco 10720 Internet Router publication. For additional Cisco IEEE 802.17 related documentation, see the "Related Documentation" section on page xix.
The following sections present information on show commands, verification steps, and alarm messages:
•Using the show controller rpr-ieee Command
•Using the show arp Command
•Verifying Clocking
•PASS-THRU Mode
•Verifying the PASS-THRU Mode
•Using the show rpr-ieee topology Command
•Using the show rpr-ieee protection Command
•Fiber Misconnection
Using the show controller rpr-ieee Command
Verify the following using the show controller rpr-ieee command:
•RX optics readout values are within specifications. For example: RX readout values: -11 dBm - Within specifications, RX readout values: -15 dBm - Within specifications
•Error counters are not incrementing.
•There are no active defects or alarms. For example, Active Alarms: None
•Proper clocking configuration for each span (East and West). For example,
Clock source: Internal
•Proper hosts are on the proper side. For example, Remote span id: East, Remote span id: West
The following example shows sample output from this command:
Router# show controllers rpr-ieee 1/1
Hardware is OC48 RPR-IEEE
RPR-IEEE1/1 - West Span (Ringlet0 RX, Ringlet1 TX)
LOF = 0 LOS = 0 BIP(B1) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B3) = 0
LOP = 0 NEWPTR = 0 PSE = 0 NSE = 0
Alarm reporting enabled for: SLOS SLOF PLOP
Rx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16
Tx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16 J0 = 0x1
Path trace buffer : Stable
Remote interface: RPR-IEEE1/1
BER thresholds: SF = 10e-3 SD = 10e-6
IPS BER thresholds(B3): SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
biff (6:57:52 PM): RPR-IEEE1/1 - East Span (Ringlet1 RX, Ringlet0 TX)
LOF = 0 LOS = 0 BIP(B1) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B3) = 0
LOP = 0 NEWPTR = 0 PSE = 0 NSE = 0
Alarm reporting enabled for: SLOS SLOF PLOP
Rx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16
Tx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16 J0 = 0x1
Path trace buffer : Stable
Remote interface: RPR-IEEE1/1
BER thresholds: SF = 10e-3 SD = 10e-6
IPS BER thresholds(B3): SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
Using the show controllers rpr-ieee 1/1 transceiver Command
Use the transceiver keyword to display additional information about the status of the small form-factor pluggable (SFP) module used in an RPR port.
Router# show controllers rpr-ieee 1/1 transceiver
Show Transceiver: West Span
Gigabit Ethernet compliance: unspecified
Fibre Channel link length: unspecified
Fibre Channel transmitter technology: unspecified
Fibre Channel transmission media: unspecified
Fibre Channel speed: unspecified
Single mode fiber supported length: 2 km
Upper bit rate limit: unspecified
Lower bit rate limit: unspecified
Date code (yyyy/mm/dd): 2004/04/21
Vendor PN: SCP6828-C5-BNE
Vendor revision number: D
Vendor serial number: ECL0817001L
Transceiver status information
Diagnostics calibration is external
Temperature 39 (+/-3 Celsius)
Voltage in transceiver 3232600 uV (+/- 10 mV)
TX bias 8940 uA (+/- 100uA)
TX power 316000 nW / -5 dBm (+/- 3dBm)RX power 300200 nW / -5 dBm (+/- 3dBm)
TX power 1000000 nW / 0 dBm 50100 nW / -13 dBm
RX power 1008300 nW / 0 dBm unspecified
Voltage 3600000 uV 3000000 uV
TX power 630900 nW / -2 dBm 79400 nW / -11 dBm
RX power 1008300 nW / 0 dBm unspecified
Show Transceiver: East Span
Gigabit Ethernet compliance: unspecified
Fibre Channel link length: unspecified
Fibre Channel transmitter technology: unspecified
Fibre Channel transmission media: unspecified
Fibre Channel speed: unspecified
Single mode fiber supported length: 2 km
Upper bit rate limit: unspecified
Lower bit rate limit: unspecified
Date code (yyyy/mm/dd): 2004/04/21
Vendor PN: SCP6828-C5-BNE
Vendor revision number: D
Vendor serial number: ECL0817001M
Transceiver status information
Diagnostics calibration is external
Temperature 38 (+/-3 Celsius)
Voltage in transceiver 3230800 uV (+/- 10 mV)
TX bias 8724 uA (+/- 100uA)
TX power 285600 nW / -5 dBm (+/- 3dBm)
RX power 309900 nW / -5 dBm (+/- 3dBm)
TX power 1000000 nW / 0 dBm 50100 nW / -13 dBm
RX power 1008300 nW / 0 dBm unspecified
Voltage 3600000 uV 3000000 uV
TX power 630900 nW / -2 dBm 79400 nW / -11 dBm
RX power 1008300 nW / 0 dBm unspecified
Using the show arp Command
Use the show arp command to verify that the correct Address Resolution Protocol (ARP) table is loaded.
The following example shows sample output from this command:
Protocol Address Age (min) Hardware Addr Type Interface
Internet 1.1.1.1 154 0001.0001.0001 RPR-IEEE-W RPR-IEEE1/1
Internet 1.1.1.3 155 0003.0003.0003 RPR-IEEE-E RPR-IEEE1/1
Internet 1.1.1.2 - 0002.0002.0002 RPR-IEEE RPR-IEEE1/1
Internet 200.1.1.1 - 0001.64ff.0601 ARPA GigabitEthernet2/1
Router#
Verifying Clocking
There are two modes of clocking for the rpr-ieee interface, LINE and INTERNAL. Clocking works over dark fiber.
•INTERNAL means that the rpr-ieee interface uses its internal 20ppm or Stratum-3 clock. LINE means it takes timing from the other span of the line.
•Having both spans with clocking set to INTERNAL is the default configuration and results in normal operation.
•Having both spans with clocking set to LINE is not advised and will result in bit interleaved parity (BIP) errors over time.
•Pairing opposite spans of a connection with one spans INTERNAL and one span LINE is acceptable, but not necessary.
Ideal clocking is achieved when all interfaces have the clocking set to INTERNAL. The following example shows this configuration:
router(config)# interface rpr-ieee 1/1
router(config-if)# rpr-ieee clock-source internal East
router(config-if)# rpr-ieee clock-source internal West
PASS-THRU Mode
The rpr-ieee line card acts as an optical regenerator when it is operating in PASS-THRU mode. PASS-THRU mode isolates the node. This mode is activated when the interface is placed in shutdown mode, or the node is not receiving layer 2 keepalives on span East or span West.
Use the shutdown interface configuration command to place the router rpr-ieee interface in PASS-THRU mode.
PASS-THRU mode is a useful troubleshooting tool for isolating which node on the ring is faulty.
The following example shows sample output from this command:
Router# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface RPR-IEEE 1/1
Router(config-if)#shutdown
3d06h: %SYS-5-CONFIG_I: Configured from console by tty1
3d06h: %LINK-5-CHANGED: Interface RPR-IEEE1/1, changed state to administratively down
3d06h: %LINEPROTO-5-UPDOWN: Line protocol on Interface RPR-IEEE1/1, changed state to down
Verifying the PASS-THRU Mode
Use the show rpr-ieee ips EXEC command to verify that the rpr-ieee node is in PASS-THRU mode, which occurs when the interface is administratively down.
The following example shows sample output from this command:
Router# show rpr-ieee protection
RPR-IEEE1/1 is administratively down
Using the show rpr-ieee topology Command
Use the show rpr-ieee topology EXEC command to verify that topology is valid.
The following example shows sample output from this command:
Router# show rpr-ieee topology
Ring Topology: CLOSED (STABLE)
Configured protection mode: WRAPPING
Jumbo preference: SET (ring supports JUMBOS)
Index (Ri 0) MAC IP Address Edge W/E Request W/E
1 0001.0001.0001 1.1.1.1 NO/NO IDLE/IDLE
2 0003.0003.0003 1.1.1.3 NO/NO IDLE/IDLE
3 0002.0002.0002 1.1.1.2 NO/NO IDLE/IDLE
Index (Ri 1) MAC IP Address Edge W/E Request W/E
1 0003.0003.0003 1.1.1.3 NO/NO IDLE/IDLE
2 0001.0001.0001 1.1.1.1 NO/NO IDLE/IDLE
3 0002.0002.0002 1.1.1.2 NO/NO IDLE/IDLE
Using the show rpr-ieee protection Command
The show rpr-ieee protection command displays the status of the 802.17 topology-protection. It contains information such as the neighbors found on each ringlet, the protection mode/status and the topology checksum values/status.
The following example shows sample output from this command:
Router# show rpr-ieee protection
Protection Information for Interface RPR-IEEE1/1
West Span (Ringlet 0 RX) neighbor 0001.0001.0001
East Span (Ringlet 1 RX) neighbor 0003.0003.0003
Station MAC address 0002.0002.0002
slow timer: 1x100 msec (100 msec)
Protection holdoff timers:
L1 Holdoff Keepalive Detection
West Span 0x10 msec ( 0 msec) West Span 3 msec
East Span 0x10 msec ( 0 msec) East Span 3 msec
Configured protection mode: WRAPPING
Protection WTR period is 10 sec. (timer is inactive)
Self Detected Requests Remote Requests
West Span IDLE West Span IDLE
East Span IDLE East Span IDLE
East Span IDLE West Span IDLE
West Span Failures: none East Span Failures: none
If the ring reports an "OPEN" state in the topology, there is a link failure in the ring, the details in the ringlet indices will pinpoint the failure location by indicating the Edge location and the Request (reason) for the Edge.
Fiber Misconnection
Use the show rpr-ieee EXEC command to check for misconnected fiber cables, for example, span East to span East or TX to TX. The message, "Misconnection Alarm" shows at the top of the show rpr-ieee command output when there is a fiber misconnection.
•One alarm—the problem is with another node on the ring. For example, span East connected to span East.
•Two alarms—the problem is your node. For example, span East to span East and span West to span West.
Basic Troubleshooting SRP for the Uplink Card
This section provides basic troubleshooting guidelines for SRP on the DPT, POS/DPT, and RPR/SRP uplink cards. For additional information about SRP configurations, refer to the Cisco IOS Software Configuration for the Cisco 10720 Internet Router publication. For additional Cisco SRP-related documentation, see the "Related Documentation" section on page xix.
The following sections present information on show commands, verification steps, and alarm messages:
•Using the show controller srp Command
•Using the show arp Command
•Verifying Clocking
•PASS-THRU Mode
•Verify the PASS-THRU Mode
•Using the show srp topology Command
•Using the show srp ips Command
•Fiber Misconnection
Using the show controller srp Command
Verify the following using the show controller srp command:
•RX optics readout values are within specifications. For example: RX readout values: -11 dBm - Within specifications, RX readout values: -15 dBm - Within specifications
•Error counters are not incrementing.
•There are no active defects or alarms. For example, Active Alarms: None
•Proper clocking configuration for each side (A and B). For example,
Clock source : Internal
•Proper hosts are on the proper side. For example, Remote side id : A,
Remote side id : B
Router# show controllers srp
SRP1/1 - Side A (Outer RX, Inner TX)
RX readout values: -11 dBm - Within specifications
LOF = 0 LOS = 0 BIP(B1) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B3) = 0
LOP = 0 NEWPTR = 0 PSE = 0 NSE = 0
Active Alarms: None
Alarm reporting enabled for: SLOS SLOF PLOP
Rx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16
Tx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16 J0 = 0x1
Clock source : Internal
Path trace buffer : Stable
Remote IP addr : 48.1.1.2
Remote side id : B
BER thresholds: SF = 10e-3 SD = 10e-6
IPS BER thresholds(B3): SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
SRP1/1 - Side B (Inner RX, Outer TX)
RX readout values: -15 dBm - Within specifications
LOF = 0 LOS = 0 BIP(B1) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B2) = 0
AIS = 0 RDI = 0 FEBE = 0 BIP(B3) = 0
LOP = 0 NEWPTR = 0 PSE = 0 NSE = 0
Active Defects: None
Active Alarms: None
Alarm reporting enabled for: SLOS SLOF PLOP
Rx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16
Tx SONET/SDH bytes: (K1/K2) = 0/0 S1S0 = 0 C2 = 0x16 J0 = 0x1
Clock source : Internal
Path trace buffer : Stable
Remote IP addr : 48.1.1.2
Remote side id : A
BER thresholds: SF = 10e-3 SD = 10e-6
IPS BER thresholds(B3): SF = 10e-3 SD = 10e-6
TCA thresholds: B1 = 10e-6 B2 = 10e-6 B3 = 10e-6
Using the show arp Command
Use the show arp command to verify that the correct Address Resolution Protocol (ARP) table is loaded.
Protocol Address Age (min) Hardware Addr Type Interface
Internet 48.1.1.2 181 0001.6340.9100 SRP-B SRP1/1
Internet 48.1.1.10 - 0001.64ff.3100 SRP2 SRP1/1
Internet 194.16.3.1 68 0001.64ff.3103 ARPA FastEthernet2/3
Internet 194.16.2.1 123 0001.64ff.3102 ARPA FastEthernet2/2
Internet 194.16.1.1 - 0001.64ff.3101 ARPA FastEthernet2/1
repetitive output removed
Verifying Clocking
There are two modes of clocking for the SRP interface, LINE and INTERNAL. Clocking works over dark fiber.
•INTERNAL means that the SRP interface uses its internal 20ppm or Stratum-3 clock. LINE means it takes timing from the other side of the line.
•Having both sides with clocking set to INTERNAL is the default configuration and results in normal operation.
•Having both sides with clocking set to LINE is not advised and will result in bit interleaved parity (BIP) errors over time.
•Pairing opposite sides of a connection with one side INTERNAL and one side LINE is acceptable, but not necessary.
Ideal clocking is achieved when all interfaces have the clocking set to INTERNAL. The following example shows this configuration:
router(config)# interface srp 1/1
router(config-if)# srp clock-source internal A
router(config-if)# srp clock-source internal B
PASS-THRU Mode
The SRP line card acts as an optical regenerator when it is operating in PASS-THRU mode. PASS-THRU mode isolates the node. This mode is activated when the interface is placed in shutdown mode, or the node is not receiving layer 2 keepalives on side A or side B.
Use the shutdown interface configuration command to place the router SRP interface in PASS-THRU mode.
PASS-THRU mode is a useful troubleshooting tool for isolating which node on the ring is faulty.
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface srp 1/1
Router(config-if)# shutdown
23:42:25: %SYS-5-CONFIG_I: Configured from console by console
23:42:27: %LINK-5-CHANGED: Interface SRP1/1, changed state to administratively down
23:42:28: %LINEPROTO-5-UPDOWN: Line protocol on Interface SRP1/1, changed state to down
Verify the PASS-THRU Mode
Use the show srp ips EXEC command to verify that the SRP node is in PASS-THRU mode, which occurs when the interface is administratively down.
SRP1/1 is administratively down
Using the show srp topology Command
Use the show srp topology EXEC command to verify that the topology packets are being sent and received.
router# show srp topology
Topology Map for Interface SRP1/1
Topology pkt. sent every 5 sec. (next pkt. after 0 sec.)
Last received topology pkt. 00:00:04
Hops (outer ring) MAC IP Address Wrapped Name
0 0001.64ff.1580 48.1.1.3 No M0426C
1 0001.6347.9700 48.1.1.2 No M0426B
2 00b0.c280.cf00 48.1.1.1 No M0426A
By default, the maximum acceptable time for the last topology packet to be received is 5 seconds. If the last received packet value is higher than 5 seconds, topology packets are being lost on the ring.
Using the show srp ips Command
The show srp ips command displays the status of the IPS protocol. It contains information such as the direct neighbors' address, the wrap state, the failures state and the latest transmitted and received IPS packets of the SRP node. It also indicates that the interface is administratively up and not in PASS-THRU mode. (See the "PASS-THRU Mode" section.)
IPS Information for Interface SRP1/1
Side A (Outer ring RX) neighbor 00b0.c280.cf00
Side B (Inner ring RX) neighbor 0001.6347.9700
Node MAC address 0001.64ff.1580
Side A not wrapped
Side B not wrapped
Side A (Inner ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)
Side B (Outer ring TX) IPS pkt. sent every 1 sec. (next pkt. after 1 sec.)
IPS WTR period is 60 sec. (timer is inactive)
IPS Self Detected Requests IPS Remote Requests
Side A (Outer ring RX) {00b0.c280.cf00,IDLE,SHORT}, TTL 128
Side B (Inner ring RX) {0001.6347.9700,IDLE,SHORT}, TTL 128
Side A (Outer ring RX) {0001.64ff.1580,IDLE,SHORT}, TTL 128
Side B (Inner ring RX) {0001.64ff.1580,IDLE,SHORT}, TTL 128
Any status other than IDLE, SHORT indicates that errors are present.
If the value "none" is present in IPS packets received, there is a problem on the ring.
Fiber Misconnection
Use the show srp EXEC command to check for misconnected fiber cables, for example, side A to side A or TX to TX. The message, "Misconnection Alarm" shows at the top of the show srp command output when there is a fiber misconnection.
•One alarm—the problem is with another ring on the node. For example, side A connected to side A.
•Two alarms—the problem is your node. For example, side A to side A and side B to side B.
Alarm Messages
The following alarm messages display on the console. The suggested solutions cover the most commonly observed errors.
See the following tables for specific alarms and solutions.
Alarm Messages
The following alarm messages report to the console. See Table 4-1 through Table 4-8 for specific alarms and solutions.
The suggested solutions listed below are to the most commonly observed errors:
•Keepalive Alarm Messages for All Uplink Cards, Table 4-1
•IEEE 802.17 RPR Wrap Messages, Table 4-2
•IEEE 802.17 RPR Unwap Messages, Table 4-3
•Other IEEE 802.17 RPR Alarm Messages, Table 4-6
•SRP Wrap Messages, Table 4-7
•SRP Unwrap Message, Table 4-8
Table 4-1 Keepalive Alarm Messages for All Uplink Cards
Alarm
|
Description
|
Solution
|
SRP1/1 Side A Keepalive Failure (MAC)
|
MAC failure is detected
|
Check transport span for problems.
Typically SRP ring traverses a SONET layer connection, creating this error.
|
SRP1/1 Side A Keepalive Failure (SLOS)
|
SONET section loss of signal
|
Check fiber for breaks, power level, and connectivity.
This is a SONET layer 1 issue with fiber.
|
SRP1/1 Side A Keepalive Failure (SLOF)
|
SONET section loss of frame
|
Check the fiber for degradation in (power level) or clocking (internal versus line).
|
SRP1/1 Side A Keepalive Failure (LSD)
|
SONET line signal degrade
|
Check the affected fiber, transmit and receive ports. Check power level.
This is a SONET layer 1 issue with signal degrade.
|
SRP1/1 Side A Keepalive Failure (LSD)
|
SONET line signal degrade
|
Check the neighbor node/transport/regenerator for SONET layer 1 issues (LOS, LSF).
This is a SONET layer 1 issue with an intermediate unit (usually transport connection or regenerator) forwarding an AIS.
|
SRP1/1 Side A Keepalive OK
|
Keepalive failure removed; Layer 2 Keepalive receiving correctly
|
None.
|
RPR-IEEE1/1 span WEST Keepalive Failure (MAC)
|
MAC failure is detected
|
Check transport span for problems.
Typically RPR ring traverses a SONET layer connection, creating this error.
|
RPR-IEEE1/1 span WEST Keepalive Failure (SLOS)
|
SONET section loss of signal
|
Check fiber for breaks, power level, and connectivity.
This is a SONET Layer 1 issue with fiber.
|
RPR-IEEE1/1 span WEST Keepalive Failure (SLOF)
|
SONET section loss of frame
|
Check the fiber for degredation in (power level) or clocking (interval versus line).
|
RPR-IEEE1/1 span WEST Keepalive Failure (LSD)
|
SONET line signal degrade
|
Check the affected fiber transmit (TX) and receive (RX) ports. Check the power level.
This is a SONET Layer 1 issue with signal degradation.
|
RPR-IEEE1/1 span WEST Keepalive Failure (LSF)
|
SONET line signal failure
|
Check the neighboring node/transport/regenerator for SONET layer 1 issues (LOS, LSF).
This is a SONET Layer 1 issue with an intermediate unit (usually transport connection or regenerator) forwarding an AIS.
|
RPR-IEEE1/1 span WEST Keepalive Failure OK
|
Keepalive signal removed, Layer 2 Keepalive receiving correctly
|
None.
|
Table 4-2 IEEE 802.17 RPR Wrap Messages
Alarm
|
Description
|
Solution
|
RPR-IEEE1/1 wrapped on span East (span WEST User Request Forced Switch)
|
User initiated forced switch on span WEST on node
|
User initiated, none.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST User Request Manual Switch)
|
User initiated manual switch on span WEST on node
|
User initiated, none.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Self Detect Signal Fail)
|
SONET Layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—SLOS, SLOF, LSF, or LAIS.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor Signal Degrade)
|
SONET Layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—LSD.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Self Detect Wait to Restore [WTR])
|
Wrap cleared, node initiated; Wait to Restore (WTR) state
|
WTR period is 10 to 360 seconds (user configured), node will unwrap at end of WTR. None.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor Forced Switch)
|
Neighbor node Forced Switch initiated by user. Node wrap to protect failed span
|
User initiated, none.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor Manual Switch)
|
Neighbor node Manual Switch initiated by user. Node wrap
|
User initiated, none.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor Signal Fail)
|
Neighbor node wrapped due to signal fail
|
Investigate the signal degrade on neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor Signal Degrade)
|
Neighbor node wrapped due to signal degrade
|
Investigate the signal degrade on neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Span Neighbor WTR)
|
Wrap cleared, node initiated; Wait to Restore state
|
WTR period is 0 to 1440, or never (user configured), node will unwrap at end of WTR. None. Setting WTR to never will prevent the node from unwrapping.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Long Request Forced Switch)
|
Neighbor node Forced Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Long Request Manual Switch)
|
Neighbor node Manual Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Long Request Signal Fail)
|
Neighbor node wrapped due to signal fail
|
Investigate signal fail on neighbor node.
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Long Request Signal Degrade)
|
Neighbor node wrapped due to signal degrade
|
Investigate signal degrade on neighbor node. Investigate why short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 wrapped on span EAST (span WEST Long Request WTR)
|
Wrap cleared; Wait to Restore timer expired
|
None.
|
Table 4-3 IEEE 802.17 RPR Unwap Messages
Alarm
|
Description
|
Solution
|
RPR-IEEE1/1 unwrapped on span EAST (wrap cause cleared)
|
Wrap cleared; Wait to Restore timer expired.
|
None.
|
Table 4-4 IEEE 802.17 RPR Steer Messages
Alarm
|
Description
|
Solution
|
RPR-IEEE1/1 protected on span East (span WEST User Request Forced Switch)
|
User initiated forced switch on span WEST on node
|
User initiated, none.
|
RPR-IEEE1/1 protected on span EAST (span WEST User Request Manual Switch)
|
User initiated manual switch on span WEST on node
|
User initiated, none.
|
RPR-IEEE1/1 protected on span EAST (span WEST Self Detect Signal Fail)
|
SONET Layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—SLOS, SLOF, LSF, or LAIS.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor Signal Degrade)
|
SONET Layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—LSD.
|
RPR-IEEE1/1 protected on span EAST (span WEST Self Detect Wait to Restore [WTR])
|
Wrap cleared, node initiated; Wait to Restore (WTR) state
|
WTR period is 10 to 360 seconds (user configured), node will unwrap at end of WTR. None.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor Forced Switch)
|
Neighbor node Forced Switch initiated by user. Node wrap to protect failed span
|
User initiated, none.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor Manual Switch)
|
Neighbor node Manual Switch initiated by user. Node wrap
|
User initiated, none.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor Signal Fail)
|
Neighbor node protected due to signal fail
|
Investigate the signal degrade on neighbor node.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor Signal Degrade)
|
Neighbor node protected due to signal degrade
|
Investigate the signal degrade on neighbor node.
|
RPR-IEEE1/1 protected on span EAST (span WEST Span Neighbor WTR)
|
Wrap cleared, node initiated; Wait to Restore state
|
WTR period is 0 to 1440, or never (user configured), node will unwrap at end of WTR. None. Setting WTR to never will prevent the node from unwrapping.
|
RPR-IEEE1/1 protected on span EAST (span WEST Long Request Forced Switch)
|
Neighbor node Forced Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 protected on span EAST (span WEST Long Request Manual Switch)
|
Neighbor node Manual Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 protected on span EAST (span WEST Long Request Signal Fail)
|
Neighbor node protected due to signal fail
|
Investigate signal fail on neighbor node.
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
RPR-IEEE1/1 protected on span EAST (span WEST Long Request Signal Degrade)
|
Neighbor node protected due to signal degrade
|
Investigate signal degrade on neighbor node. Investigate why short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
Table 4-5 IEEE 802.17 RPR Un-Steer Messages
Alarm
|
Description
|
RPR-IEEE1/1 unprotected on span EAST (protection cause cleared)
|
Protection cleared; Wait to Restore timer expired.
|
Table 4-6 Other IEEE 802.17 RPR Alarm Messages
Alarm
|
Description
|
Solution
|
RPR-IEEE1/1 Ringlet1 reserved A0 bandwidth has exceeded line rate
|
The amount of total A0 bandwidth on Ringlet1 reserved by all nodes on the ring exceeds the line rate
|
Check current A0 allocations on each station using the show rpr-ieee rate-limit command.
Change the A0 allocation on the ring by using the rpr-ieee tx-traffic reserved CLI command.
|
RPR-IEEE1/1 Ringtlet0 reserved A0 bandwidth has exceeded line rate
|
The amount of total A0 bandwidth on Ringlet0 reserved by all nodes on the ring exceeds the line rate
|
Check current A0 allocation on each station using the show rpr-ieee rate-limit command.
Change the A0 allocation on the ring by using the rpr-ieee tx-traffic reserved CLI command.
|
RPR-IEEE1/1 MAX Stations Exceeded
|
Too many stations have been discovered in the topology (maximum number of ring stations is 255)
|
Execute the show rpr-ieee topology commandto verify stations. Reduce the numer of stations in the ring.
|
RPR-IEEE1/1 Effective jumbo pref on ring is set for jumbo frames
|
All stations on the ring now support jumbo frame preference, MTU for the ring has been changed to JUMBO MTU (9100 bytes).
|
None. Remove jumbo preference on stations to revert to REGULAR MTU (1500 bytes)
|
RPR-IEEE1/1 Effective jumbo pref on ring is set for regular frame
|
At least one station on the ring does not support jumbo frame preference, MTU for the ring has been changed to REGULAR MTU (1500 bytes).
|
None. Configure jumbo preference on all stations to change support to JUMBO MTU (9100 bytes).
|
RPR-IEEE1/1 Effective protection mode on station is now steering
|
Protection preference has been changed. Protection mode for this station is now steering.
|
None.
|
RPR-IEEE1/1 Effective protection mode on station is now wrapping
|
Protection preference has been changed. Protection mode for this station is now wrapping.
|
None.
|
Configured protection mode is inconsistent with other stations on ring
|
Not all stations in the ring support the same protection preference (wrapping or steering). This inconsistency will create failures in a protection event.
|
Change all stations to support the same protection preference, all stations must support wrapping or steering. Use the show rpr-iee topology command to verify protection preference. Use the rpr protection preference wrap or no rpr protection preference wrap configuration command to change the preference.
|
Table 4-7 SRP Wrap Messages
Alarm
|
Description
|
Solution
|
SRP1/1 wrapped on side B (side A User Request Forced Switch)
|
User-initiated forced switch on side A on node
|
User initiated, none.
|
SRP1/1 wrapped on side B (side A User Request Manual Switch)
|
User-initiated manual switch on side A on node
|
User initiated, none.
|
SRP1/1 wrapped on side B (side A Self Detect Signal Fail)
|
SONET layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—SLOS, SLOF, LSF, or LAIS.
|
SRP1/1 wrapped on side B (side A Span Neighbor Signal Degrade)
|
SONET layer 1 signal fail detected
|
Investigate Keepalive failure. Wrap occurred.
Keepalive failure—LSD.
|
SRP1/1 wrapped on side B (side A Self Detect Wait to Restore [WTR])
|
Wrap cleared, node initiated Wait to Restore (WTR) state
|
WTR period is 10 to 360 seconds (user configured), node will unwrap at end of WTR. None.
|
SRP1/1 wrapped on side B (side A Span Neighbor Forced Switch)
|
Neighbor node Forced Switch initiated by user; Node wrap to protect failed span
|
User initiated, none.
|
SRP1/1 wrapped on side B (side A Span Neighbor Manual Switch)
|
Neighbor node Manual Switch initiated by user; Node wrap
|
User initiated, none.
|
SRP1/1 wrapped on side B (side A Span Neighbor Signal Fail)
|
Neighbor node wrapped due to signal fail
|
Investigate the signal fail on neighbor node.
|
SRP1/1 wrapped on side B (side A Span Neighbor Signal Degrade)
|
Neighbor node wrapped due to signal degrade
|
Investigate the signal degrade on neighbor node.
|
SRP1/1 wrapped on side B (side A Span Neighbor WTR)
|
Wrap cleared, node initiated Wait to Restore state
|
WTR period is 10 to 360 seconds (user configured), node will unwrap at end of WTR. None.
|
SRP1/1 wrapped on side B (side A Long Request Forced Switch)
|
Neighbor node Forced Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
SRP1/1 wrapped on side B (side A Long Request Manual Switch)
|
Neighbor node Manual Switch initiated by user; Node wrap to protect failed span; Secondary problem on the short path
|
Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
SRP1/1 wrapped on side B (side A Long Request Signal Fail)
|
Neighbor node wrapped due to signal fail
|
Investigate signal fail on neighbor node. Investigate why the short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
SRP1/1 wrapped on side B (side A Long Request Signal Degrade)
|
Neighbor node wrapped due to signal degrade
|
Investigate signal degrade on neighbor node. Investigate why short path request was not received.
Check other problems on the short span as indicated on the neighbor node.
|
SRP1/1 wrapped on side B (side A Long Request WTR)
|
Wrap cleared, Wait to Restore timer expired
|
None.
|
Table 4-8 SRP Unwrap Message
Alarm
|
Description
|
Solution
|
SRP1/1 unwrapped on side B (side A Wrap cause cleared)
|
Wrap cleared, Wait to Restore timer expired
|
None.
|
Note The solutions provided do not cover all possible problems related to specific alarms.
Basic Troubleshooting Ethernet for the Access Card
This section provides some basic troubleshooting guidelines for Fast Ethernet and Gigabit Ethernet interfaces on the access card. For additional information about troubleshooting Ethernet configurations, refer to the Cisco IOS Software Configuration for the Cisco 10720 Internet Router publication. For additional Cisco Ethernet-related documentation, refer to "Related Documentation" section on page xix.
The following sections present basic troubleshooting tips for hardware and simple software tasks.
•Verifying Interface Configuration
•FastEthernet/GigabitEthernet Is up
•Line Protocol Is up
•Duplex Mode Setting
•Speed Mode
•Output Hang
•CRC Field Counters
•Late Collision
•Carrier Signal
Verifying Interface Configuration
Use the show interfaces FastEthernet slot/port command to verify the configuration of a Fast Ethernet interface.
Router# show interfaces FastEthernet 2/1
FastEthernet2/1 is up, line protocol is up
Hardware is Fast Ethernet, address is 0001.64ff.3101 (bia0001.64ff.3101)
Internet address is 194.16.1.1/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255,
load 1/255
Encapsulation ARPA, loopback not set
Auto-duplex, Auto Speed, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:04, output hang never
Last clearing of "show interface" counters 00:00:13
Queueing strategy: PXF First-In-First-Out
Output queue 0/8192, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
1 packets output, 64 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Use the show interfaces GigabitEthernet slot/port command to verify the configuration of a Gigabit Ethernet interface.
Router# show interfaces GigabitEthernet 2/1
GigabitEthernet2/1 is up, line protocol is up
Internet address is 195.16.1.1/16
MTU 9100 bytes, BW 1000000 Kbit, DLY 10 usec, rely 255/255, load 0/255
Encapsulation ARPA, loopback not set
Full-duplex mode, link type is autonegotiation, media type is SX
output flow-control is off, input flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:02, output 00:00:00, output hang never
Last clearing of "show interface" counters 03:41:33
Queueing strategy: PXF First-In-First-Out
Output queue 0/8192, 0 drops; input queue 0/75, 0 drops
30 second input rate 0 bits/sec, 0 packets/sec
30 second output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
1 packets output, 64 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
FastEthernet/GigabitEthernet Is up
If the interface is down, check the following conditions:
•The cable is fully connected.
•The cable is bent or damaged. If the cable is bent or damaged, the signal will be degraded.
•A hardware failure has not occurred. Observe the LEDs or use the show commands to determine if a failure has occurred. If the hardware has failed, replace the card or cable.
•If the interface is administratively down, use the no shutdown command to enable the interface.
See the "Verifying Interface Configuration" section for an example output that shows interface status.
Line Protocol Is up
Check to see if the status is line protocol is up, in the first line of the output; see the "Verifying Interface Configuration" section. The status of the interface follows the slot/port configuration:
•The line protocol software processes determine that the line is unusable. Swap the cable.
•Check local or remote interface for misconfiguration.
•Swap interface module when there is a hardware failure.
Duplex Mode Setting
The local interface duplex mode configuration should match the remote interface configuration. See the "Verifying Interface Configuration" section for an example output that shows duplex settings. Confirm that duplex settings are the same on both ends of the connection.
Speed Mode
The local interface speed mode field should match the remote interface configuration. See the "Verifying Interface Configuration" section for an example output that shows speed settings. Speed setting display is shown in the following line:
Output Hang
The output hang provides the number of hours, minutes, and seconds since the last reset caused by a lengthy transmission. For example, the output hang data is located on line 9 of the show interfaces GigabitEthernet 2/1 router output:
Last input never, output 00:00:04, output hang never
See the "Verifying Interface Configuration" section for a complete example output that shows output hang data.
CRC Field Counters
Excessive noise will cause high CRC errors accompanied by a low number of collisions. Perform the following checks if you encounter high CRC errors:
•Check the cables for damage.
•Verify that the correct cables are being used for the appropriate access card. For cabling specifications, refer to the Cisco 10720 Internet Router Access Card Installation and Configuration publication.
Late Collision
The console will display the following message when late collisions are detected:
Port 2/X - Late collision detected. Possible duplex mismatch.
Late collisions result from either of the following conditions:
•Ethernet cables are too long.
•Duplex mode does not match the remote interface.
For example, the late collisions data is located on line 22 of the show interfaces FastEthernet 2/1 router output:
0 babbles, 0 late collision, 0 deferred
See the "Verifying Interface Configuration" section for a complete example of the output that identifies late collisions.
Carrier Signal
The lost carrier, no carrier numbers track the number of lost carrier detect signals that have occurred.
•If the transmit clock signal is not active, check the interface for malfunction.
•Check for a cable problem.
•Carrier signal resets can occur when an interface is in one of the following states:
–Looped back.
–Shut down.
Cleaning the Fiber-Optic Connections
For information about cleaning fiber-optic cable connectors and receptacles, see the Inspection and Cleaning Procedures for Fiber-Optic Connections document. It provides detailed illustrations and photos of procedures and equipment required to properly clean fiber-optic connections.