Ethernet Switches & Routers

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Frequent Visitor
Posts: 1
Registered: ‎02-27-2014

ICX 6610 version 08010a LAG configuration. Ping/icmp latency high

Hi all, 

New to brocade ICX switches. Recently testing 2 units of ICX6610 and 1 unit of ICX6430. 

2 units of ICX6610 was stacked together and LAG are configured to tagged VLAN10 and VLAN20 to ICX6430 LAG.

 

Interface VE 10 and 20 was created on ICX6610. so when I try to ping from ICX6430 to ICX6610, traffic did go thru. However, the icmp traffic is inconsistent. And the latency can goes up to hundreds of miliseconds for no reason. There is no other traffic in the test environment. It will go back to less than 1 ms for a while then spike up again. Is there any reason for this? I notice in version 7 wasn't that bad. Anyone experiencing the same before?

 

64 bytes from 192.168.1.1: icmp_seq=3024 ttl=64 time=0.398 ms

64 bytes from 192.168.1.1: icmp_seq=3025 ttl=64 time=0.501 ms

64 bytes from 192.168.1.1: icmp_seq=3026 ttl=64 time=0.424 ms

64 bytes from 192.168.1.1: icmp_seq=3027 ttl=64 time=0.421 ms

64 bytes from 192.168.1.1: icmp_seq=3028 ttl=64 time=0.391 ms

64 bytes from 192.168.1.1: icmp_seq=3029 ttl=64 time=0.374 ms

64 bytes from 192.168.1.1: icmp_seq=3030 ttl=64 time=0.417 ms

64 bytes from 192.168.1.1: icmp_seq=3031 ttl=64 time=0.458 ms

64 bytes from 192.168.1.1: icmp_seq=3032 ttl=64 time=0.597 ms

64 bytes from 192.168.1.1: icmp_seq=3033 ttl=64 time=35.540 ms

64 bytes from 192.168.1.1: icmp_seq=3034 ttl=64 time=34.154 ms

64 bytes from 192.168.1.1: icmp_seq=3035 ttl=64 time=33.647 ms

64 bytes from 192.168.1.1: icmp_seq=3036 ttl=64 time=33.695 ms

64 bytes from 192.168.1.1: icmp_seq=3037 ttl=64 time=32.179 ms

64 bytes from 192.168.1.1: icmp_seq=3038 ttl=64 time=31.056 ms

64 bytes from 192.168.1.1: icmp_seq=3039 ttl=64 time=30.020 ms

64 bytes from 192.168.1.1: icmp_seq=3040 ttl=64 time=28.804 ms

64 bytes from 192.168.1.1: icmp_seq=3041 ttl=64 time=28.329 ms

64 bytes from 192.168.1.1: icmp_seq=3042 ttl=64 time=29.068 ms

64 bytes from 192.168.1.1: icmp_seq=3043 ttl=64 time=26.809 ms

64 bytes from 192.168.1.1: icmp_seq=3044 ttl=64 time=26.593 ms

64 bytes from 192.168.1.1: icmp_seq=3045 ttl=64 time=26.527 ms

64 bytes from 192.168.1.1: icmp_seq=3046 ttl=64 time=25.631 ms

64 bytes from 192.168.1.1: icmp_seq=3047 ttl=64 time=25.151 ms

64 bytes from 192.168.1.1: icmp_seq=3048 ttl=64 time=24.065 ms

64 bytes from 192.168.1.1: icmp_seq=3049 ttl=64 time=22.874 ms

64 bytes from 192.168.1.1: icmp_seq=3050 ttl=64 time=22.585 ms

64 bytes from 192.168.1.1: icmp_seq=3051 ttl=64 time=22.307 ms

64 bytes from 192.168.1.1: icmp_seq=3052 ttl=64 time=20.988 ms

64 bytes from 192.168.1.1: icmp_seq=3053 ttl=64 time=20.750 ms

64 bytes from 192.168.1.1: icmp_seq=3054 ttl=64 time=19.936 ms

64 bytes from 192.168.1.1: icmp_seq=3055 ttl=64 time=19.567 ms

 

New Contributor
Posts: 4
Registered: ‎07-03-2013

Re: ICX 6610 version 08010a LAG configuration. Ping/icmp latency high

Similar issue here.

 

LAG between a stack of 6610 and a MLXe8. all traffic coming from the 6610 going through the MLXe routing between VLAN's on VE interfaces. if traffic comes near to 50Mbit, response time grows up to 450ms. Fun thing: using a traffic generator sending 1Gbit, traffic does not exceed 50Mbit.

 

Attached is a PDF showing the setup. I was able to reproduce this on 2 different MLXe and 6610 stacks.

 

Cheers,

Swen

New Contributor
Posts: 4
Registered: ‎07-03-2013

Re: ICX 6610 version 08010a LAG configuration. Ping/icmp latency high

At least my problem was solved by this:  http://puck.nether.net/pipermail/foundry-nsp/2006-December/000784.html

 

The magic was: no ip icmp redirects

 

 

Cheers,

Swen

Regular Visitor
Posts: 1
Registered: ‎11-17-2014

Re: ICX 6610 version 08010a LAG configuration. Ping/icmp latency high

We notice a similar issue. A new ICX6610 in a lab (standalone) with basic setup ie; switch IP address etc. Pinging the switch IP from one pc has a pattern of periodic latency as you have shown. Pinging across the switch to a second pc is fine with >1ms responses.

 

Frequent Contributor
Posts: 105
Registered: ‎07-12-2011

Re: ICX 6610 version 08010a LAG configuration. Ping/icmp latency high

Are you pinging a device, or the gateway itself?

 

If you are pinging the gateway, or the router itself, its job is to route, not answer ICMP queries.

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