Page 4 - Switch Management and Maintenance; Firmware Upgrade; Using the Console Port:
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 3 Switch Management and Maintenance Firmware Upgrade Using the Web Configurator 1. Download (and unzipped) the correct model firmware to your computer. 2. Click Management > Maintenance in th...
Page 5 - firmware upgrade process is done.; Restore a Configuration File
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 4 1. Download (and unzipped) the correct model firmware to your computer. 2. Connect to the console port and launch a Terminal Emulation software 3. Restart the switch to enter the debug mode vi...
Page 6 - restore processes are complete.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 5 2. Click the “Click Here” link for Restore Configuration to display the following screen. 3. In the File Path field, click Browse to locate the firmware file. 4. Click Restore to start restori...
Page 7 - Backing Up a Configuration File
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 6 Backing Up a Configuration File Using the Web Configurator: 1. Click Management > Maintenance in the navigator panel to display the following screen. 2. Click the “Click Here” link for Back...
Page 8 - Load Factory Defaults
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 7 5. Enter “ATGO” to restart the switch after file transfer and the configuration backup processes are complete. . Using FTP: 1. Download (and unzipped) the correct model firmware to your comput...
Page 9 - load the factory default configuration.; General Networking; DHCP Relay Option 82 Application
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 8 4. Click OK. 5. Click OK again to start the configuration reset process. 6. Please note that the IP address of the switch is now 192.168.1.1. Using the Console Port: 1. Connect to the console ...
Page 10 - In the web configurator, click; Advanced Application > DHCP; in the navigation; DHCP; screen as shown. Enable the DHCP relay feature and; Information; DHCP Client
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 9 Setting up a DHCP Relay Option 82 Environment In this example, we will show you how to configure DHCP relay settings to allow a computer to obtain a specific IP address from a DHCP server base...
Page 11 - IP Commander setup; Launch IP Commander and right-click; IP Commander; and click; Connect New
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 10 Next connect a computer to the Ethernet port of the CPE to the 1 st VDSL port. Refer to the previous application for more information. 2. IP Commander setup Launch IP Commander and right-clic...
Page 12 - OK
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 11 Enter the IP address or domain name for the DHCP server and click OK . For this example, we enter 192.168.1.99 for the IP address.
Page 14 - online
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 13 A screen displays. Make sure that the status of your DHCP is online . On the top menu, click Wizard > Rule Wizard .
Page 17 - DHCP Option; in the Keywords field.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 16 Next select DHCP Option in the Keywords field.
Page 18 - Add DHCP Option Rule; Select; Option 82 Relay Agent Information; . Note that the first
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 17 An Add DHCP Option Rule screen displays. Select Option 82 Relay Agent Information , set sub-option 1and use binary data. For port 1, VLAN 1 with option82 string of “VES-1616FA-54”, enter “001...
Page 20 - Next; in the screen that displays.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 19 Click Next in the screen that displays.
Page 25 - Separating a physical network into multiple; What is Virtual LAN?
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 24 After the DHCP server configuration, your computer should be able to get an IP address of 192.168.1.201 when a DHCP request is sent. Separating a physical network into multiple virtual networ...
Page 26 - Note that VLAN only
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 25 known as the VLAN Group. A station can belong to more than one group. Stations in the same VLAN group can communicate with each other. With VLAN, a station cannot directly communicate with st...
Page 27 - Egress port for port 1: port 2; Port-based VLAN definition; Egress port for port 2: port 1, port 3
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 26 Port-based VLAN definition : z Egress port for port 1: port 2 z Egress port for port 2: port 1 Case 2: In this network example, there are three VLAN groups in the physical network. Hosts A an...
Page 28 - Port-based VLAN across multiple switches
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 27 Port-based VLAN across multiple switches Port-based VLAN is specific only to the switch on which it was created. Thus, port-based VLAN cannot cross multiple switches. The following figure sho...
Page 30 - Configuring the Switch Using the Web Configurator; PC B
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 29 In this scenario, Port Based VLAN is used to separate one physical switch into two smaller logical switches. Ports 1~4 and 17, 18 belong to the same VLAN group, and ports 5~8 are in another g...
Page 31 - Basic Setting > Switch; Click; Apply; to save your changes.; Advanced Application >
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 30 7. First, set the switch to use port based VLAN. Click Basic Setting > Switch Setup in the navigation panel and select “Port Based” in the VLAN Type field. Click Apply to save your changes...
Page 33 - PING PC C from PC A (not successful with request timed out message)
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 32 13. PING PC C from PC A (not successful with request timed out message) Configuring the Switch Using the CLI 1. Connect the your computer to the console port on the switch 2. Open your Termin...
Page 34 - Tag-based VLAN Overview; VLAN ID
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 33 7. After entering the commands, use the “write memory” command under the enable mode to save your configuration. What is IEEE 802.1Q Tag-based VLAN? Tag-based VLAN Overview In the IEEE 802.1Q...
Page 40 - Set PVID on switch B:
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 39 Answer: ------------------------------------- In switch A, add port 17 in each VLAN VID:101 (port 1,2,"17 TAG") VID:102 (port 3,4,"17 TAG") VID:103 (port 5,6,"17 TAG")...
Page 45 - VLAN Stacking Overview; and; its branch; Company XX branch; Company XX HQ
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 44 VLAN Stacking Overview VLAN stacking allows a carrier to offer multiple virtual LANs over a single circuit. In essence, the carrier creates an Ethernet VPN to tunnel customer VLANs across its...
Page 46 - office
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 45 office . Company XX HQ Æ Switch A Æ Switch B Æ Switch C Æ Switch D Æ Company XX Branch Office. In this case, VLAN Stacking is enabled on access ports 11 and 12 on Switch B. An SP...
Page 48 - Advanced Application>; and click the; Static VLAN
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 47 7. First, create VLAN groups for the ISP’s network. For this example, VLAN 30 for company XX and VLAN 40 for company YY. Click Advanced Application> Switch Advance> VLAN and click the S...
Page 50 - Advanced Application > VLAN Stacking; in the navigation panel to display the configuration screen.; Active; . Set ports 1 and 2 as the access port
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 49 11. To configure VLAN Stacking, click Advanced Application > VLAN Stacking in the navigation panel to display the configuration screen. 13. To enable VLAN stacking, select Active . Set por...
Page 52 - VLAN Status; screen
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 51 Follow the steps in the previous section to configure VLANs 30 and 40 of which ports 9, 10 and 11 are members. After the configuration, the VLAN Status screen should look similar to the figur...
Page 55 - Tx Tagging; screen should look similar to the
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 54 Follow the steps in the previous section to configure VLAN 30 of which ports 1 and 12 are members. Since port 1 is an Access Port, un-select the Tx Tagging field. After the configuration, the...
Page 56 - . Set port 25 as the tunnel port and leave
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 55 To enable VLAN stacking, select Active . Set port 25 as the tunnel port and leave the SPVID field to the default settings. 9. You have finished setting Switch D for VLAN stacking for this net...
Page 58 - screen should look similar to the figure as shown.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 57 Follow the steps in the previous section to configure VLAN 40 of which ports 1 and 12 are members. Since port 12 is a TunnelPort, select the Tx Tagging field. For the Access Port (port 1), un...
Page 60 - Network Scenario
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 59 Network Scenario Configuring Switches A, E, F and H Using the CLI On switches A, E, F and H, create a VLAN (with VID 1) which contains all the port members. By default VLAN1 is already create...
Page 62 - switch B for this network scenario.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 61 switch B for this network scenario. 7. After entering the commands, use the “write memory” command in the enable mode to save your configuration. Configuring Switch C via CLI 1. Connect your ...
Page 65 - IP Multicasting; Not a Receiver; IGMP
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 64 IP Multicasting Configuring IGMP snooping in your switch IGMP snooping is designed for scenarios with multicast traffic. It operates on the underlying IGMP mechanism where a layer two switch ...
Page 66 - IP Application; where, IGMP function can; Not a member
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 65 multicast group information without manually configuring switches. Configuration of IGMP snooping by web In this example, we enable the IGMP function on the GS-4024 (an IGMP router) to connec...
Page 67 - Multicast; and then; IGMP Snooping; where we can enable IGMP snooping function; router igmp; Enable IGMP snooping in VDSL switch
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 66 2. In the VDSL Switch, click Advanced Application > Multicast > Multicast Setting and then IGMP Snooping where we can enable IGMP snooping function with WEB-GUI. Configuration of IGMP a...
Page 68 - show multicast; to enable IGMP snooping function.; Overview of MVR
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 67 VES-1616FA-54(config)# igmp-snooping 3. Display the IGMP Status In the exec mode of CLI VES-1616FA-54# show multicast 4. Display the IGMP snooping Status In the exec mode of CLI VES-1616FA-54...
Page 69 - MVR Mode; Dynamic Mode; Figure 2
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 68 MVR Mode z Dynamic Mode If we select the dynamic mode in MVR setting, IGMP report message transmitted from the receiver port will be forwarded to a multicast router through its source CH1, VL...
Page 70 - Compatible mode; Operation Mode; Join Operation
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 69 port. Multicast router knows which multicast groups exist on which interface dynamically. z Compatible mode If we select the dynamic mode in MVR setting, IGMP report message transmitted from ...
Page 71 - Configuration via Web; Advanced Application; Port 1
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 70 Configuration via Web 1. We need to create a VLAN for multicast traffic in GS-4024. In GS-4024 , click the Advanced Application and then select the VLAN. In the VLAN Configuration, create a n...
Page 72 - Advanced Application> MVR; dynamic
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 71 3. We need to create separate VLANs for different clients. In VES-1616FA-54, in the Advanced Application> MVR configure the MVR VLAN=100. Define port 1, port 2 and port 3 as the receiver p...
Page 73 - after the MVR configuration, click the; Advanced; and check whether there is the new VLAN 100 added; Open Advanced Application > VLAN > Static VLAN; to add a new VLAN. Tick
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 72 4. In VES-1616FA-54, after the MVR configuration, click the Advanced Application , VLAN Status and check whether there is the new VLAN 100 added in the VLAN list. We also create three separat...
Page 75 - Open Advanced Application > VLAN > VLAN Port Setting; to change PVID for; Menu; go to the
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 74 the Active box, type VLAN Name “50” and VLAN ID “50” in the columns. Change Port 3 and Port 17 to fixed and keep port 17 tx tagging. Open Advanced Application > VLAN > VLAN Port Setting...
Page 76 - Setting; go to; Configuration via CLI
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 75 Setting , and activate the IGMP Snooping. 7. In the VES-1616FA-54, go to Advanced Application> MVR , and then to the Group configuration . Set 233.1.1.1~ 233.1.1.100 as the range of multic...
Page 77 - Step 11: Define the Dynamic mode
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 76 VES-1616FA-54(config-vlan)# fixed 1 Step 4: On the VES-1616FA-54, in the configure mode, create VLAN 40, and set the port 2 to be fixed port. VES-1616FA-54(config)# vlan 40 VES-1616FA-54(conf...
Page 78 - riple p; play Ap; App; pplicat; tion
ZyX Tr Themetto ctopoThe201398traff ConTo aVLAVLA1. XEL Al riple p e triple play thods to ac configure th ology is sh ere are thre 1 is assigne88 is for Vo ffic for MoD nfigure VE apply triple ANs to maAN ID. Open Advaconfiguratfill in the N ll contents co play Ap y applicatio chieve the he VDSL m h...
Page 80 - Advanced Application > Multicast; to enable the IGMP snooping
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 79 4. Open Advanced Application > Multicast to enable the IGMP snooping feature at the Multicast configuration page. To avoid the unknown multicast frames flooding to all VDSL ports, check th...
Page 84 - button to move to the next configuration step.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 83 Open Advanced Setup > WAN to Create new WAN Interface. First click the add button to add a new interface. Then check the VLAN Mux option to enable the IEEE 802.1Q VLAN on this Interface an...
Page 90 - The second command is
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 89 ebtables -I INPUT 1 -i eth1.4 -j mark --set-mark 0x80004 The second command is : ebtables -I FORWARD 1 -i eth1.4 -j mark --set-mark 0x80004 After issuing these two commands, the settings are ...
Page 92 - Ringing a network by building redundant; When Host sends a broadcast frame, like an ARP request to Router, the
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 91 Ringing a network by building redundant links and connections between Switch What is Spanning Tree Protocol? Spanning Tree Overview Spanning-Tree Protocol (STP) is a Layer 2 protocol designed...
Page 93 - flood a copy of the received frame to Segment B.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 92 2. Filtering Database Instability: When multiple copies of a frame arrive at different ports of a switch, the MAC entry instability in Filtering Database will occur. z Host sends a unicast fr...
Page 94 - Select a root bridge; designated ports; . While in forwarding state, port can receive; The root port is normally in forwarding state
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 93 Spanning Tree Protocol continually explores the network, so when the network topology changes, STP automatically reconfigures the switch ports in order to avoid the failure by blocking certai...
Page 95 - When multiple ports have the same path cost to root bridge,; the port with; Select a designated port on each segment
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 94 z 3. When multiple ports have the same path cost to root bridge, the port with lowest port priority is selected as root port . 3. Select a designated port on each segment For each LAN segment...
Page 97 - Switching security; Port; screen to verify this.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 96 Switching security MAC Limit As an added protection against network intrusion attacks, ZyXEL has implemented the MAC limit feature on VES-1616FA-54. Security has been the main focus of our sw...
Page 99 - Setting up 802.1x Radius Authentication.
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 98 Setting up 802.1x Radius Authentication. Port Authentication: RADIUS Setup Click Advanced Application> Port Authentication in the navigation panel to display the port Authentication page a...
Page 101 - Local Area connection Properties; screen and click the; Authentication; option and select; EAP type; field. The following
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 100 802.1x/MD5-challenge setup Open the Local Area connection Properties screen and click the Authentication tab. Select the Enable IEEE 802.1x authentication for this network option and select ...
Page 102 - and the authentication server has verified your account, you
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 101 Click on the message window and a login screen displays as shown. Enter your account user name and password in the fields provided. After you click OK and the authentication server has verif...
Page 103 - Classifier & Policy rule setup on your Switch
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 102 After the configuration, the port is authenticated and the computer connected to this port is allowed to access the network. Otherwise, the computer cannot access the network. Classifier &am...
Page 106 - Centralized Management
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 105 3. Policy rule on classifier 3 Centralized Management Introduction to SNMPc and NetAtlas With the number of network device increasing, the demand to detect and respond
Page 107 - : Button and controls to execute commands quickly
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 106 to network failures or events in a short time post a great challenge to network administrators. How to easily manage and monitor network devices across networks has become more and more impo...
Page 108 - Menu Shortcut Bar; : The buttons execute common commands; Device Panel; : View devices in a tree structure. The colors of the device; System message Panel; : View the alarm and port status of the selected; Figure 3 EMS Overview; Main Button Bar
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 107 EMS Overview The following figure illustrates the main elements in the EMS. z Menu Shortcut Bar : The buttons execute common commands z Device Panel : This is a graphical device display. z D...
Page 109 - Adding a new device in SNMPc; Insert Device; icon to create a; Figure 4 Adding a new Device
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 108 Adding a new device in SNMPc This section shows you how to add a new device in SNMPc and access the EMS screen. 1. In the edit button bar shown in Figure 4, click the Insert Device icon to c...
Page 110 - screen displays. Enter a descriptive name in the
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 109 2. A Map Object Properties screen displays. Enter a descriptive name in the Label field. Then enter the IP address of the device in the Address field. For this example, we enter “192.168.0.1...
Page 111 - to
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 110 4. Change the value for Read/Write Access Mode to SNMP V2c . Screen settings should be similar to the one shown. Figure 7 Read/Write Access Mode 5. Change the value for Read Community to pub...
Page 112 - Change the value for; Read/Write Community; public; to save the; Figure 9 Read/write Community
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 111 6. Change the value for Read/Write Community to public . Click OK to save the settings and close this screen. Figure 9 Read/write Community 7. In the Selection tool menu, click the name of t...
Page 113 - Figure 10 Device Selection; to display the main EMS; Figure 11 Device Selection
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 112 Figure 10 Device Selection 8. A screen displays as shown. Click Switch Manager to display the main EMS screen as shown in Figure 11 Figure 11 Device Selection 9. The device list panel on the...
Page 114 - Figure 12 Rootmap
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 113 Figure 12 Rootmap 10. Click on a switch icon to display the device panel and status screen as shown in Figure 13. Figure 13 Device mapping
Page 115 - FAQ; In the Web Configurator:
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 114 FAQ What are the default IP parameter settings? IP address: 192.168.1.1 Subnet: 255.255.255.0 What is the default login Name and Password to log into the Web Configurator? ID: admin Password...
Page 116 - How to configure the IP address?
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 115 How to access the Command Line Interface (CLI)? There are two ways to access the Command Line Interface: through the console port or Telnet. If you want to access through the console port, R...
Page 117 - Using the Web Configurator
ZyXEL VES-1616/24FA-5x Series Support Notes All contents copyright 2008 ZyXEL Communications Corporation. 116 Using the Web Configurator Click Basic Setting > IP Setup in the navigation panel to display the configuration screen. Is Online Help available on the Web Configurator? Yes. You can click...