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ES3528MV2 Supports RSPAN - A remote control mechanism that enhances traffic control and speeds up traffic-collecting Follow

ahbee_wai 韋宜良

August 23, 2024 11:31
Updated

Once a network system is set-up, administrators want to monitor and collect traffic if necessary. In the past, traffic is only allowed to be collected and analyzed in that DUT (Device under Testing). It would be much trouble if Duts are far away from office, for example, 100 miles away and distributed in several places.

RSPAN solves this problem. It is a remote control mechanism that does traffic-collecting not only on that Dut but those connected to Dut. Once testing switch is connected to remote switch, RSPAN copies the packages flowed in testing switch to the remote switch. In such way, administrators could monitor several different switches by just monitoring the traffic copied to the remote switch, and could stay in remote office without travelling hundred miles away.

ES3528MV2 is a L2 Fast Ethernet Standalone Switch. It supports RSPAN and speeds up traffic-collecting. Administrators could monitor the traffic by the following steps:

How to monitor the traffic of PC1 in a different VLAN of a remote switch ?

On Switch 1

1. Create VLAN 2

SW1(config)#vlan database
SW1(config-vlan)#vlan 2 media ethernet

2. Assign port 1 and port 2 to VLAN 2 access port

SW1(config)# interface ethernet 1/1-2
SW1(config-if)#switchport allowed vlan add 2
SW1(config)#switchport native vlan 2
SW1(config-if)#switchport allowed vlan remove 1
SW1(config)#exit

3. Enable RSPAN on VLAN 100

SW1(config)#vlan database
SW1(config-vlan)#vlan 100 media  ethernet rspan
SW1(config-vlan)#exit

4. RSPAN Source device setting

SW1(config)#rspan session 1 source interface ethernet 1/1
SW1(config)#rspan session 1 remote vlan 100 source uplink ethernet 1/27

On Switch 2

1. Enable RSPAN on VLAN 100

SW2(config)#vlan database
SW2(config-vlan)#vlan 100 media ethernet rspan
SW2(config-vlan)#ex

2. RSPAN Destiatnion device setting

SW2(config)#rspan session 1 destination interface ethernet 1/1 tagged
SW2(config)#rspan session 1 remote vlan 100 destination uplink ethernet 1/27

How to verify the RSPAN function is working or not ?

From Switch 1

SW1#sh rspan session 1
RSPAN Session ID                : 1
Source Ports (mirrored ports)
  RX Only                       : None
  TX Only                       : None
  BOTH                          : Eth 1/1
Destination Port (monitor port) : None
Destination Tagged Mode         : None
Switch Role                     : Source
RSPAN VLAN                      : 100
RSPAN Uplink Ports              : Eth 1/27
Operation Status                : Up

SW1#sh vlan

VLAN ID             : 1
Type                : Static
Name                : DefaultVlan
Status              : Active
Ports/Port Channels : Eth1/ 3(S) Eth1/ 4(S) Eth1/ 5(S) Eth1/ 6(S) Eth1/ 7(S)
                      Eth1/ 8(S) Eth1/ 9(S) Eth1/10(S) Eth1/11(S) Eth1/12(S)
                      Eth1/13(S) Eth1/14(S) Eth1/15(S) Eth1/16(S) Eth1/17(S)
                      Eth1/18(S) Eth1/19(S) Eth1/20(S) Eth1/21(S) Eth1/22(S)
                      Eth1/23(S) Eth1/24(S) Eth1/25(S) Eth1/26(S) Eth1/27(S)
                      Eth1/28(S)

VLAN ID             : 2
Type                : Static
Name                :
Status              : Active
Ports/Port Channels : Eth1/ 1(S) Eth1/ 2(S)

Remote SPAN VLANs
------------------------------------------------
VLAN ID             : 100
Type                : Static
Name                :
Status              : Active

SW1#show interfaces switchport ethernet 1/1
Information of Eth 1/1
 Broadcast Threshold           : Enabled, 64 Kbits/second
 Multicast Threshold           : Disabled
 Unknown Unicast Threshold     : Disabled
 LACP Status                   : Disabled
 Ingress Rate Limit            : Disabled, 64 Kbits per second
 Egress Rate Limit             : Disabled, 100000 Kbits per second
 VLAN Membership Mode          : Hybrid
 Ingress Rule                  : Disabled
 Acceptable Frame Type         : All frames
 Native VLAN                   : 2
 Priority for Untagged Traffic : 0
 GVRP Status                   : Disabled
 Allowed VLAN                  :     2(u)
 Forbidden VLAN                :
 802.1Q Tunnel Status          : Disabled
 802.1Q Tunnel Mode            : Normal
 802.1Q Tunnel TPID            : 8100 (Hex)
 Layer 2 Protocol Tunnel       : None

SW1#show interfaces switchport ethernet 1/27
Information of Eth 1/27
 Broadcast Threshold           : Enabled, 64 Kbits/second
 Multicast Threshold           : Disabled
 Unknown Unicast Threshold     : Disabled
 LACP Status                   : Disabled
 Ingress Rate Limit            : Disabled, 64 Kbits per second
 Egress Rate Limit             : Disabled, 1000000 Kbits per second
 VLAN Membership Mode          : Hybrid
 Ingress Rule                  : Disabled
 Acceptable Frame Type         : All frames
 Native VLAN                   : 1
 Priority for Untagged Traffic : 0
 GVRP Status                   : Disabled
 Allowed VLAN                  :     1(u)
 Forbidden VLAN                :
 802.1Q Tunnel Status          : Disabled
 802.1Q Tunnel Mode            : Normal
 802.1Q Tunnel TPID            : 8100 (Hex)
 Layer 2 Protocol Tunnel       : None

From Switch 2

SW2#sh rspan session 1
RSPAN Session ID                : 1
Source Ports (mirrored ports)   : None
  RX Only                       : None
  TX Only                       : None
  BOTH                          : None
Destination Port (monitor port) : Eth 1/1
Destination Tagged Mode         : Tagged
Switch Role                     : Destination
RSPAN VLAN                      : 100
RSPAN Uplink Ports              : Eth 1/27
Operation Status                : Up

SW2#show vlan

VLAN ID             : 1
Type                : Static
Name                : DefaultVlan
Status              : Active
Ports/Port Channels : Eth1/ 1(S) Eth1/ 2(S) Eth1/ 3(S) Eth1/ 4(S) Eth1/ 5(S)
                      Eth1/ 6(S) Eth1/ 7(S) Eth1/ 8(S) Eth1/ 9(S) Eth1/10(S)
                      Eth1/11(S) Eth1/12(S) Eth1/13(S) Eth1/14(S) Eth1/15(S)
                      Eth1/16(S) Eth1/17(S) Eth1/18(S) Eth1/19(S) Eth1/20(S)
                      Eth1/21(S) Eth1/22(S) Eth1/23(S) Eth1/24(S) Eth1/25(S)
                      Eth1/26(S) Eth1/27(S) Eth1/28(S)

Remote SPAN VLANs
------------------------------------------------
VLAN ID             : 100
Type                : Static
Name                :
Status              : Active

SW2#sh int sw e 1/1
Information of Eth 1/1
 Broadcast Threshold           : Enabled, 64 Kbits/second
 Multicast Threshold           : Disabled
 Unknown Unicast Threshold     : Disabled
 LACP Status                   : Disabled
 Ingress Rate Limit            : Disabled, 64 Kbits per second
 Egress Rate Limit             : Disabled, 100000 Kbits per second
 VLAN Membership Mode          : Hybrid
 Ingress Rule                  : Disabled
 Acceptable Frame Type         : All frames
 Native VLAN                   : 1
 Priority for Untagged Traffic : 0
 GVRP Status                   : Disabled
 Allowed VLAN                  :     1(u)
 Forbidden VLAN                :
 802.1Q Tunnel Status          : Disabled
 802.1Q Tunnel Mode            : Normal
 802.1Q Tunnel TPID            : 8100 (Hex)
 Layer 2 Protocol Tunnel       : None

SW2#sh int sw e 1/27
Information of Eth 1/27
 Broadcast Threshold           : Enabled, 64 Kbits/second
 Multicast Threshold           : Disabled
 Unknown Unicast Threshold     : Disabled
 LACP Status                   : Disabled
 Ingress Rate Limit            : Disabled, 64 Kbits per second
 Egress Rate Limit             : Disabled, 1000000 Kbits per second
 VLAN Membership Mode          : Hybrid
 Ingress Rule                  : Enabled
 Acceptable Frame Type         : All frames
 Native VLAN                   : 1
 Priority for Untagged Traffic : 0
 GVRP Status                   : Disabled
 Allowed VLAN                  :     1(u)
 Forbidden VLAN                :
 802.1Q Tunnel Status          : Disabled
 802.1Q Tunnel Mode            : Normal
 802.1Q Tunnel TPID            : 8100 (Hex)
 Layer 2 Protocol Tunnel       : None

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