[c-nsp] Weird LAN problem between Cisco and Juniper

[Konstantin Barinov]

gigabits via fibers everywhere, counters are clean on switches.


br
--
Konstantin Barinov
INFONET AS, Tallinn, Estonia



Friday, October 28, 2005, 1:03:59 AM, you wrote:

EK> Quick stab, Duplex mis-match ?  Its burnt me before as its easy to overlook

EK> Eric

>> Hi,
>> 
>> Weird situation. Any ideas?
>> 
>> 145 - cisco 7603
>> 146 - cisco 3550
>> 148 - juniper M20
>> 149 - juniper M20
>> 
>> 145 and 146 in one location, connected via several gigabit 
>> etherchannels to 148 and 149 in second location. Switches in 
>> between are catalysts 4000 series. No errors on catalyst 
>> ports. No errors on router ports. No filters, no ACL's, no 
>> shapers. Nothing of that kind.
>> 
>> In general, high delay and 10-90% packet loss from .145 to 
>> .148 All other combinations work fine.
>> 
>> 
>> br
>> --
>> Konstantin Barinov
>> INFONET AS, Tallinn, Estonia
>> 
>> 
>> 
>> 
>> 
>> 
>> network 1.2.3.144/29
>> 
>> 
>> IP 1.2.3.145
>> 
>> akm-bb#ping 1.2.3.148
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.148, timeout is 2 
>> seconds: !..!! Success rate is 60 percent (3/5), round-trip 
>> min/avg/max = 4/14/36 ms
>> 
>> akm-bb#ping 1.2.3.149
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.149, timeout is 2 
>> seconds: !!!!! Success rate is 100 percent (5/5), round-trip 
>> min/avg/max = 1/2/4 ms
>> 
>> akm-bb#ping 1.2.3.146
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.146, timeout is 2 
>> seconds: !!!!! Success rate is 100 percent (5/5), round-trip 
>> min/avg/max = 1/1/4 ms
>> 
>> 
>> 
>> IP 1.2.3.146
>> 
>> 
>> akm-l3#ping 1.2.3.148
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.148, timeout is 2 
>> seconds: !!!!! Success rate is 100 percent (5/5), round-trip 
>> min/avg/max = 1/1/1 ms
>> 
>> akm-l3#ping 1.2.3.149
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.149, timeout is 2 
>> seconds: !!!!! Success rate is 100 percent (5/5), round-trip 
>> min/avg/max = 1/2/4 ms
>> 
>> akm-l3#ping 1.2.3.145
>> 
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 1.2.3.145, timeout is 2 
>> seconds: !!!!! Success rate is 100 percent (5/5), round-trip 
>> min/avg/max = 1/1/1 ms
>> 
>> 
>> 
>> 
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