The differences with the pvlan case are the vlan id, which is the rspan destination vlan instead of the original access vlan, and the fact that the input interface in the flow record is null 0 and the output interface is the service module port. The following extract is from the cisco configuration guide which gives a bit more detail on this feature. Erspan can be used as a span destination but the n7k where the erspan traffic needed to be decapsulated and sent to the monitoring tool didnt have the correct sofware to do this. Any help would be greatly appreciated rspan config on c6504. In the diagram below, we want to capture traffic from switch1 port fa01 and send.
One session is used as the source and one session is used to copy or receive the traffic from a vlan. Rspan is an advanced feature that requires a special vlan to carry the monitored traffic and is not supported by all switches. Encapsulated remote span erspan identifies visibility gaps and vulnerabilities, but using it enables flow data to passively monitor on one or more ports or vlans, and. This document describes how to configure an encapsulated remote switched port analyzer erspan session on a nexus 5000 series switch that transports mirrored traffic over an ip network, which provides remote monitoring across your network. Physical switch s1 and s2 configuration red circle numbered 2 and 3 you have to make sure that these two physical switches are configured with the same rspan vlan 400. How to configure the voice vlan feature on the catalyst 2960 and 2960s switches. It also needs to be allowed on all trunk ports between the source and destination switches. All topics contain examples that are well explained, have good graphics, each with the routers configuration and validation and debug commands. Rspan source session rspan vlan rspan destination session.
I cant do erspan because the destination is not able to decapsulate the gre on destination. Therefore, the nexus 7000 switch can only use rspan as a transit vlan or a source vlan and pull data from the rspan vlan. In the erspan config requires two destination ip addresses and dont know of which devices i need to put these ips for. Standard port spanning allows you to mirror one or more physical source ports or. Im attempting to create an erspan session between a nexus 5000 and 6500 to get traffic from a fex interface on the 5000 over to a sniffer off of the 6500. You cannot place anything into the rspan vlan from the nexus 7000 switch. How to configure cisco span rspan erspan with examples. Cisco switchingrouting erspan causing high cpu on 6500. I want to use them as transit network for rspan vlan in my case it is the vlan 666.
First, well configure the nexus switch as the erspan source per the. Im trying to get erspan working with an erspan source on a nexus 5548 and the erspan destination on a catalyst 6500. Configure rspan with vmware extrahop documentation website. Packet captures and port mirroring on the ms switch.
The port will be specified as the destination port for. The rspan vlan should be allowed in all trunks between the involved switches source and destination switches in this case. Unfortunately, its often not possible to install the ids on the same physical. Cisco public rspan in terms of configuration, rspan consists of the following. Rspan remote span feature allows traffic that is sourced from a switch to be mirrored to a remote switch within a layer 2 network over trunk ports.
Switch v7 ch08 free download as powerpoint presentation. The packet is decapsulated at the destination router and then sent to the destination interface. Remote span rspan best practices broadcom tech docs. How to configure the voice vlan feature on the catalyst. Span sources refer to the interfaces from which traffic can be monitored. A question came up on twitter the other day about spanning a physical port to a virtual machine. I configed local span monitor session 1 source vlan for rspan vlans, and it seemed working. Dell networking n4000 is a series of energyefficient and costeffective 10gbe switches designed for modernizing and scaling network infrastructure. When you configure multipoint redistribution its a good idea to use route tagging to prevent advertising something from routing. View and download cisco nexus 7000 series configuration manual online. Configuration examples cisco span network switch port. The cisco nexus 5000 series switch supports ethernet, fibre channel, virtual fibre channel, port channels, san port channels, vlans, and vsans as span sources. On the nexus 7000 it is not possible to use an rspan vlan as a span destination.
The rspan option isnt available on all catalyst switches express 500 520, 55005000, 3500 xl, 2940, 2948gl3, and 2900xl switches dont have the rspan feature. Layer 2 configuration guide for cisco ncs 4200 series. This guide explains how to configure erspan on an extrahop discover appliance with a cisco nexus v switch that is running on a windows machine. Monitoring multiple vlans with a single span session. Vtp optional vtp if enabled disable for remote span vlan rspan configuration. Contribute to osrgopenvswitch development by creating an account on github. The traffic from the source ports or vlans are mirrored into the rspan vlan and forwarded over trunk or the evc bridge domain bd ports carrying the rspan vlan to a destination session monitoring the rspan vlan. Click the plus icon to add the source vlan ids that you want to monitor, and then click next. Cisco networking, vpn security, routing, catalystnexus. The nexus 7000 series switch is limited in what it can do with rspan. If you cannot configure an rspan vlan, consider configuring erspan as an alternative. Cisco refresh abu dhabi dubai uae c3kxsm10grf cisco.
The following steps outline how to mirror one or more ports on an ms switch. Udld is supported on all current cisco catalyst and nexus switches. This feature is in contrast to remote span rspan, which this list also defines. An rspan consumes one span session in the same way that a local span does, however, the rspan uses a vlan for a destination instead. To maintain a strategic distance from undesirable movement in rspan vlans, verify that the vlan remotecompass peculiarity is underpinned. The cisco nexus 7000 supports virtual span feature. Cisco 7960 ip phone connected to a switch, cisco ip phone, configure the voice vlan feature on the catalyst 2960, configuring voice vlan, displaying voice vlan.
Cisco nexus 5000 series nxos software configuration guide. The most effective way to capture traffic passed on a given switchport is to mirror that port to another available port, so all traffic passed by the source port will be sent out on the mirrored destination port. On the other hand, the remote mirroring destination session collects traffic from rspan vlan and forwards it to a destination port. Packets entering a vlan on ex2200, ex3200, ex3300, ex4200, ex4500, ex4550, or ex6200 switches. Rspan requires that you configure an rspan vlan on your physical switches. When you configure multipoint redistribution its a good idea to use route tagging to prevent advertising something from routing protocol a into b and back into a. But rspan destination session monitor session 1 source remote vlan is for only one vlan. On the switch that contains the destination port for the session, traffic from the rspan session vlan is simply mirrored out the destination port. Mac address learning is disabled in the rspan vlan. N4000 switches utilize a comprehensive enterpriseclass layer 2 and layer 3 feature set, deliver consistent, simplified management and offer highavailability device and network design. Therefore, the nexus 7000 switch can only use rspan as a transit vlan or a source vlan and pull. A source or destination port for a span or rspan session.
The obvious answer is to use rspan, but in this particular case the switch did not support rspan so that wasnt an option. Rspan source session rspan vlan rspan destination session 42. To accomplish this you will have to configure the destination vlan across the entire path between the switches. Learn how to configure rspan on an installed extrahop system. Nexus 5000 series switch erspan configuration example cisco. For some reason, i would like to config rspan destination session with multiple vlans. Cisco ncs 4200 series configuration manual pdf download. Cisco switchingrouting erspan source on nexus 5548 and destination on catalyst 6500 aug 9, 2012. You can configure span destinations to inject packets to disrupt a certain tcp packet. Span destination port actively participates in spanningtree instance. For information on the vlan range, see the cisco nexus 7000 series nxos layer 2 switching configuration guide, release 5.
When source ports are not located on the same switch as the destination port. Rspan explanation and configuration will be covered in another article. Is there a way to get extreme remore mirror traffic into a cisco rspan vlan. Nexus 7000 series switch rspan configuration example cisco. Ex series switches allow you to configure port mirroring to send copies of packets to either a local interface for local monitoring or to a vlan for remote monitoring.
Remote span rspan allows source and destination ports to be in different switches. Port mirroring adalah fitur dimana trafik data pada suatu port ataupun vlan pada sebuah switch bisa di tampilkan di port yang lain, baik itu pada switch yang sama ataupun pada switch yang berbeda, pada cisco ini dinamakan sebagai switched port analyzer span atau remote switched port analyzer. Cisco switchingrouting erspan source on nexus 5548 and. Specify the destination ports that you want to monitor and then click next. If you use a remote span, that is your destination becomes a rspan vlan and you move the third protocol analyzer to another switch you need to define the remote span vlan on both switches a l2 end to end path for rspan vlan needs to be provided for high volumes of traffic you. Remote span rspan some source ports are not located on the same switch as the destination port. You can set span to monitor a vlan port and you can also specify that it should monitor all vlan traffic. The encapsulated remote switched port analyzer erspan enables you to monitor traffic on multiple network interfaces or vlans and then send the monitored traffic to one or more destinations. Rspan is an advanced feature that requires a special vlan to carry the traffic that is monitored by span between switches. Nexus7k roadshow sept2011 network switch computer network. Hello, i will resume my issue on a simple question, but its a inner realy complicated problem. Finally, click ok and complete the remote mirroring destination session. On local span, the source interface and destination interface are on the same device. Hi i got a new stack comprised of 2pc c9200l24p4ge running 16.
When i was in my last year in university in the late 90s i had to take some courses around tcpip and computer networking. I dont know if frame forwoard also look for vlan tag on the mac table or first look on the mac table and look if the vlan is. The rspan vlan needs to exist in the vlan database of the source switch, the destination switch and all switches in the transit path between them. I know it is strange but in my case i dont want to use nexus 9k as source or destination monitor session. Whereas rspan allows you to decouple the span destination from. An rspan vlan cannot be used as a span destination. Twrp is a popular opensource custom recovery software available for many android devices. Enterprises are seeking a secure monitoring solution that performs encapsulation. Using local span instead of rspan destination session. Any network device that supports rspan vlans can be an rspan intermediate device. Span destination ports can be configured in only one span session at a time.
Configure destination port destination cannot be a fex port or a portchannel. On most catalyst switches i can use rspan to monitor the traffic into an remote span vlan. This destination port is the uplink port from which you should have a remote span port configured on your local. You must connect a local switch to an uplink port that is configured as a remote span port with rspan vlan. That was the time that something clicked in my mind. Configure erspan with the nexus v extrahop networks. Remote mirroring and rspan extreme networks support. This vlan configuration must be done on the vtp server or all switches in the path if you are not using vtp.
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