Dell PowerSwitch S4128F-ON EMC SmartFabric OS10 User Guide Release 10.5.0 - Page 1084
Enable flow-based monitoring
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seq sequence-number {deny | permit} {source [mask] | any | host ip-address} [count [byte]] [fragments] [threshold-in-msgs count] [capture session session-id] If you configure the flow-based enable command and do not apply an ACL on the source port or the monitored port, both flowbased monitoring and port mirroring do not function. Flow-based monitoring is supported only for ingress traffic. The show monitor session session-id command displays output that indicates if a particular session is enabled for flowmonitoring. View flow-based monitoring OS10# show monitor session 1 S.Id Source Destination Dir SrcIP DstIP DSCP TTL State Reason 1 ethernet1/1/1 ethernet1/1/4 both N/A N/A N/A N/A true Is UP Traffic matching ACL rule OS10# show ip access-lists in Ingress IP access-list testflow Active on interfaces : ethernet1/1/1 seq 5 permit icmp any any capture session 1 count (0 packets) seq 10 permit ip 102.1.1.0/24 any capture session 1 count bytes (0 bytes) seq 15 deny udp any any capture session 2 count bytes (0 bytes) seq 20 deny tcp any any capture session 3 count bytes (0 bytes) Enable flow-based monitoring Flow-based monitoring conserves bandwidth by mirroring only specified traffic, rather than all traffic on an interface. It is available for L2 and L3 ingress and egress traffic. Configure traffic to monitor using ACL filters. 1. Create a monitor session in MONITOR-SESSION mode. monitor session session-number type {local | rspan-source} 2. Enable flow-based monitoring for the mirroring session in MONITOR-SESSION mode. flow-based enable 3. Define ACL rules that include the keywords capture session session-id in CONFIGURATION mode. The system only considers port monitoring traffic that matches rules with the keywords capture session. ip access-list 4. Apply the ACL to the monitored port in INTERFACE mode. ip access-group access-list Enable flow-based monitoring OS10(config)# monitor session 1 type local OS10(conf-mon-local-1)# flow-based enable OS10(config)# ip access-list testflow OS10(conf-ipv4-acl)# seq 5 permit icmp any any capture session 1 OS10(conf-ipv4-acl)# seq 10 permit ip 102.1.1.0/24 any capture session 1 count byte OS10(conf-ipv4-acl)# seq 15 deny udp any any capture session 2 count byte OS10(conf-ipv4-acl)# seq 20 deny tcp any any capture session 3 count byte OS10(conf-ipv4-acl)# exit OS10(config)# interface ethernet 1/1/1 OS10(conf-if-eth1/1/1)# ip access-group testflow in OS10(conf-if-eth1/1/1)# no shutdown View access-list configuration OS10# show ip access-lists in Ingress IP access-list testflow Active on interfaces : ethernet1/1/1 1084 Access Control Lists
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