CiscoNexus9396PX平台的sFlow配置tcam问题

Question

我试图配置sflow上的Nexus9396PX开关，并有一些困难，以了解tcam区域。

hardware access-list tcam region span-sflow 256
!
feature sflow
sflow counter-poll-interval 30
sflow collector-ip 10.30.0.91 vrf management
sflow collector-port 9995
sflow agent-ip 172.30.0.26

当我启用我的port-channel1时(它是GEM模块上的4x40G端口包)

sflow data-source interface port-channel1

当我运行“显示运行sflow”来验证配置时，我看不到"sflow数据源接口端口-通道1“行。

N9K(config)# show run sflow

!Command: show running-config sflow
!Running configuration last done at: Tue Apr 13 14:24:00 2021
!Time: Tue Apr 13 14:24:58 2021

version 9.3(6) Bios:version 07.68
feature sflow

sflow counter-poll-interval 30
sflow collector-ip 10.30.0.91 vrf management
sflow collector-port 9995
sflow agent-ip 172.30.0.26

在实验中，我尝试添加Ethernet 1/1 (10G端口)，我可以看到，在“显示运行”中，40G Gem模块似乎不受支持。所以我在谷歌网站上找到了这个

确保为在以下设备上配置为sFlow数据源的任何上行链路端口配置了CiscoNexus9332PQ、9372 on、9372TX和93120TX交换机和思科Nexus9396PX、9396TX和93128TX交换机的sFlow和SPAN区域大小，这些交换机具有N9K-M6PQ或N9K-M12PQ通用扩展模块(GEM)。

问题是，在我的开关上，SPAN区域是什么? SPAN是ing- L2-span过滤器还是ing-L3-span-过滤器？

hardware access-list tcam region span 0
hardware access-list tcam region ing-l2-span-filter 0
hardware access-list tcam region ing-l3-span-filter 0
hardware access-list tcam region ipv6-span-udf 0
hardware access-list tcam region ipv6-span-l2-udf 0
hardware access-list tcam region span-sflow 256

Answer 1

这就是解决方案，我们同时需要span和sflow TCAM256号，所以我取了vPC切片并将其交给span区域(注意:以下解决方案只适用于40G接口，如果您使用10G作为数据源，那么什么都不用做)

hardware access-list tcam region vpc-convergence 0
hardware access-list tcam region sflow 256
hardware access-list tcam region span 256

现在我可以使用端口通道(4x40G包)

feature sflow

sflow counter-poll-interval 30
sflow collector-ip 172.29.0.91 vrf management
sflow collector-port 9995
sflow agent-ip 172.29.0.236

sflow data-source interface port-channel1

流统计量

N9K# show sflow
sflow sampling-rate : 4096
sflow max-sampled-size : 128
sflow counter-poll-interval : 30
sflow max-datagram-size : 1400
sflow collector-ip : 172.29.0.91 , vrf : management
sflow collector-port : 9995
sflow agent-ip : 172.29.0.236
sflow data-source interface port-channel1

N9K# show sflow statistics
Total Packets        : 4921
Total Samples        : 0
Processed Samples    : 0
Dropped Samples      : 0
Sent Datagrams       : 39
Dropped Datagrams    : 0