Lost packet in an ping between Cisco to Riverstone Router, but viceversa no

Question

Hi,
I need your help to explain me the next behavior.
I have interconnected an Cisco Router with an
RiverStone Router, i see the
next:
1. When i execute an ping from the cisco router to RS
router, i see an path
with lost of packets, this with certain frecuency.
2. When i execute the ping from the cisco router to
CPE, through Riverstone
router, all the packets are the succeful.
I need some explain at this !!!
Thanks
Jesus Ibar

Answer 1

Rick,
Searching in Internet and Riverstone, we found the next document: Ping rate-limiting feature added in 7..x and newer
Ref: http://rstone.riverstonenet.com/hoth%2Dpub/techbltn/tb0096%2D9.html
Here explain this issue, we apply the workaround and the packet lost, was solved:
Before:
PE_Mty#ping vrf SONUS-VOIP
Protocol [ip]:
Target IP address: 192.168.57.2
Repeat count [5]: 1000
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to 192.168.57.2, timeout is 2 seconds:
Success rate is 93 percent (932/1000), round-trip min/avg/max = 1/3/272 ms
PE_Mty#
After of apply the workaround:
PE_Mty#ping vrf SONUS-VOIP
Protocol [ip]:
Target IP address: 192.168.57.2
Repeat count [5]: 1000
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to 192.168.57.2, timeout is 2 seconds:
Success rate is 100 percent (1000/1000), round-trip min/avg/max = 1/1/4 ms
PE_Mty#
Thanks for all.
Jesus Ibar