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Cisco Bug: CSCvi56478 - Ping failure from ASR920 to ASR903 w/ EAMapperError1 counter after upgrade to specific ES image

Last Modified

Oct 12, 2018

Products (1)

  • Cisco ASR 920 Series Aggregation Services Router

Known Affected Releases

15.6(2)SP

Description (partial)

Symptom:
Ping failure from ASR920 to directly connected ASR903 after upgrade to customer-specific ES image.

If this issue is debugged by checking ASIC counters, the "EAMapperError1" counter is seen to increment to match the number of failed pings.

<pre>Router#req pla soft sdcli "nile stats zero_stats 0 0 all"
Writing 0x0 into Xenon stats ram....
Init statsregisters, packetcount, statsext registers....
Init channel stats ram....
Init mac stats ram....
 
Router#req plat soft sdcli "nile stat ipstat 0"          
<snip>
EAMapperError1:                    packets : 0    bytes : NA   reason: 0x0
 
Router#ping y.y.y.y rep 10000 source te0/0/11 size 1500 time 0
Type escape sequence to abort.
Sending 10000, 1500-byte ICMP Echos to y.y.y.y, timeout is 0 seconds:
Packet sent with a source address of x.x.x.x
<snip>
Success rate is 0 percent (0/10000)
 
Router#req plat soft sdcli "nile stat ipstat 0"                    
<snip>
EAMapperError1:                    packets : 10000    bytes : NA   reason: 0x0   <------- increased by 10K after 10K failed ping</pre>

Conditions:
ASR920 is running customer specific engineering special image. This is NOT seen on any public CCO release.

ASR920 is connected to ASR903 via point-to-point L3 interface. Issue is not seen if the interfaces are configured with EVC and L3 on a BDI.
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