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Dropped packets - AC3Pro

B

bconn

Hello,

Can anyone with an AC3PRO do me a favor when you have a moment? I noticed that when I do a continuous ping on the AC interface packets are being dropped. I am going to call Neptune support next week to inquire about this but I wanted to see if anyone else with the unit is experiencing the same thing without knowing about it. My apologies in advance but if you are not tech savvy here is the instruction to do this.

Bill

Click on “Start”
Click on “Run”
Then type the letters “cmd” <-without the quotes 
Click ok
When CMD window opens type the following

ping 192.168.150.252 –t <-replace this ip address with you AC3PRO LAN IP. The –t does a continuous ping. After about 30 seconds or so you should have a good feel if packets are being dropped.

Here is a sample from my AC3PRO on my LAN.

Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Request timed out.
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Request timed out.
Request timed out.
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Request timed out.
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Request timed out.
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64

I know there is no problem with my network configuration, well because I configured it myself.  For a premise router I am running a Cisco 2811, firewall is Cisco Pix 515e, and the controller is plugged into a port on the same VLAN as the DC on a Catalyst 2950. I am running the latest IOS on all devices.

I think this may become an issue for reporting. When I get a moment I will start logging output to database and look for trends. I will report in a few days with anything I find as well as the response from Neptune support.

Thanks to anyone who can take a look on their end.

Bill
 
J

jazzsam

check your speed and duplex settings on the switch. Cisco "officially" does not support the "auto" setting on any device but you will need to force it on both sides to get it to work well. Are you seeing any errors on the network port? The firewall should not matter because the traffic should not be going through it at all. (FYI, CCIE here )
 
B

bconn

Thank you for taking the time to respond. We are on the same page concerning port settings as I spent a little time reviewing the switch port setting as it was some time since I had connected to the Catalyst before I made this post last night.

I did force the settings and the results are the same...interesting.

Thanks again.
 
J

jazzsam

Have you tried another CAT5? If you are on the same switch like that then there are only a few things that can really be wrong. (one of them could be the port on the AC also)
 
B

bconn

:)

Tried different cables as well as two different 2950's. I'm perplexed. I think that there may be an issue with the port on the controller but I will need to see where this goes with Neptune. Curt @ Neptune & I are exchanging emails on this today. Good service from him so far since Neptune tech support is over the weekend.

Interesting enought (sorry to all the techphobic on the board) the problem gets worse when I try ping by hostname. I setup an A record in DNS and the problem gets worse... hehe Nothing is every easy.

odd. I guess this one will need to be solved by better minds... I'll keep you posted.

Microsoft Windows 2000 [Version 5.00.2195]
(C) Copyright 1985-2000 Microsoft Corp.

C:\Documents and Settings\Administrator.HOME>ping 192.168.150.252

Pinging 192.168.150.252 with 32 bytes of data:

Reply from 192.168.150.252: bytes=32 time=4ms TTL=64
Request timed out.
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=2ms TTL=64

Ping statistics for 192.168.150.252:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 4ms, Average = 1ms

C:\Documents and Settings\Administrator.HOME>ping ac3pro

Pinging ac3pro.home.com [192.168.150.252] with 32 bytes of data:
Request timed out.
Request timed out.
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
Reply from 192.168.150.252: bytes=32 time=1ms TTL=64
 
P

pgordemer

Officer Emeritus
Officer Emeritus
jazzsam said:
check your speed and duplex settings on the switch. Cisco "officially" does not support the "auto" setting on any device but you will need to force it on both sides to get it to work well. Are you seeing any errors on the network port? The firewall should not matter because the traffic should not be going through it at all. (FYI, CCIE here )
Click to expand...

I totally agree with Sam here, as Cisco equipment in general is terrible about Auto and Duplex. For gigggles, just use a crossover cable and connect from your computer to the AC3 Pro and try the ping and see what you get.

When in doubt, lock in a 10mb, 1/2 duplex. IOS version 12.2/12.3 are horrible at auto. Vlan is worse, is the latency time to computer the VLAN takes a toll.... on UDP (Ping) but not TCP, actual packet movement.
 
B

bconn

Resultsare a bit disappointing. I tried the crossover test and still dropping packets. :(

I have a spare box that I have used for backup dc, dhcp, and dns that I will fire up early next week. I am going to set this box to serve ip's and setup test network. The box, AC3PRO, and a client will be plugged into a managed Netgear switch I have sitting around on the bench. Will see what happens with this test.

Does anyone know someone in the group that has a AC3PRO? I would be interesting to see if their unit is doing the same thing.

Bill
 
J

jazzsam

bconn said:
Resultsare a bit disappointing. I tried the crossover test and still dropping packets. :(

I have a spare box that I have used for backup dc, dhcp, and dns that I will fire up early next week. I am going to set this box to serve ip's and setup test network. The box, AC3PRO, and a client will be plugged into a managed Netgear switch I have sitting around on the bench. Will see what happens with this test.

Does anyone know someone in the group that has a AC3PRO? I would be interesting to see if their unit is doing the same thing.

Bill
Click to expand...

Have you thought about the source of your traffic being the issue? Can you ping from that host consistently to your default gateway or something like that?
 
B

bconn

Thanks so much for the continued suggestions. Another set of eyes does help! :)

I can ping any external or internal ip from this client without any lost packets. I let it run for about an hour and no loss. I will try the test I mentioned earlier this week.

Bill
 
P

PMolan

I have the AC3Pro.......
ping.jpg
 
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