This means that on deployments with newer client types, band select may not be necessary. disable it. You can check the mode using this show command: Note:     Install mode is the recommended mode to run the Cisco Catalyst 9800 Series wireless controller because it provides the following advantages: support for high-availability features like In-Service Software Upgrade (ISSU), Software Maintenance Upgrade (SMU)/patching (hot and cold), faster boot time, less memory consumption, and Cisco DNA Center support for upgrades. For DHCP, the controller has been configured with a default timer to allow for a client to complete a successful address negotiation. With the C9800, the native VLAN is defined in the Flex profile, as this is a setting for that Flex site. This is different from AireOS, in which a dynamic interface (Layer 3 interface and related IP address) is required. For an AP in local mode/Flex Central switching: ●      Specifying vlan-name = default, client is assigned to VLAN 1, ●      Using vlan-id 1, a client is assigned to the wireless management VLAN. ●      A target is the entity where the policy is applied. ●      Known external friendly rogue APs, such as those found in vendor shared venues and neighboring retailers. Recall that the Cisco Catalyst wireless controller doesn’t need a Layer 3 interface associated to the client VLAN, so you can actually group the Layer 2 VLANs. Enable multicast VLAN under the Policy profile: Knowing the client type can be extremely useful for troubleshooting scenarios, assigning policies per device type, or optimizing the configuration to adapt to them. TPC provides enough RF power to achieve desired coverage levels while avoiding channel interference between APs. The Found inside – Page 1This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. The default is a one-day lease. ●      Silver/best effort – supports normal bandwidth for clients; this is the default setting. NTP synchronization on controllers is mandatory if you use any of these features: Location, Simple Network Management Protocol (SNMP) v3, access point authentication, or 802.11w Protected Management Frame (PMF). It is disabled by default. However, when you desire network segments that do not have a separate DHCP server, the controllers can have built-in internal DHCP server that assign IP addresses and subnet masks to wireless clients. Another example may include Android and some Linux distributions that renew the DHCP address only halfway through the lease time, but not on roaming. The option is under the Policy profile, which again gives flexibility to use the setting for a certain group of APs, even when broadcasting the same SSID/WLAN: Note:     Never enable DHCP Required for a WLAN supporting voice or video services, or when the wireless devices do conservative DHCP renewal on roaming. Here is an example of a site tag configured for FlexConnect: As highlighted in the screen shot above, you need to uncheck Enable Local Site (which is the default), and this will trigger the AP to be converted to Flex mode. The controller will parse DHCP or HTTP requests from clients against a known set of client type rules to make a best-fit evaluation of the device type. It is recommended that you set both the IPv4 and IPv6 virtual IP. Using Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) snooping may provide additional multicast forwarding optimization, as only APs with clients that have joined the respective multicast groups will transmit the multicast traffic over the air, so this is a recommended setting to have in most scenarios. The bridge group can be set at the Mesh profile level: When deploying a mesh network, each mesh node should communicate at the highest possible backhaul data rate. Here are some important recommendations: ●      When using LAG, make sure all ports of the controller have the same Layer 2 configuration matching the switch side. The recommended malicious rogue AP rules are as follows: ●      Managed SSIDs: Any rogue APs using managed SSIDs, the same as your wireless infrastructure, must be marked as malicious. ●      Ensure that the native VLAN is the same across all APs in the same location and site tag. The C9800 wireless controller, like AireOS, supports a maximum of 24 members in a single mobility group. Examples of Cisco Catalyst switches that support DHCP Snooping are: Cisco Catalyst 2960S, 2960-X, 3560, 3750, 3750-X, 3850, 4500, 6500, 9300, 9400 and 9500 series. DHCP Scope > New page appears. Secure Mobility is based on CAPWAP and by default encrypts all the control plane communication via DTLS. Found inside... via custom Option 150 or Option 66 from the DHCP server. The best practice is to set the lease period to a longer duration (for example, 8 days). There is also a version of the tool embedded in the C9800 GUI: The online version at https://cway.cisco.com/wlc-config-converter/ is the recommended one because it is always updated with the latest fixes. WLANs can operate by “hiding” the SSID name and answering only when a probe request has the explicit SSID included (that is, the client knows the name). But this has implications for authentications performed in bad RF scenarios or over a WAN network with possible packet loss, as using zero may cause a failed authentication process if the original packet is lost. It contains information such as the access point name, load, and number of associated clients in the beacon and probe responses of the WLAN that are sent by the AP. There are several ways to release your DHCP lease: Via Router GUI. Power off and completely unplug router two hours. Call Tech Support. Here is how to configure it on the GUI: If the Rogue Location Discovery Protocol (RLDP) feature is needed, use it only with monitor mode APs, to prevent performance and service impacts to the wireless network: C9800(config)# wireless wps rogue ap rldp alarm-only monitor-ap-only. Since the EWC operates in FlexConnect local switching mode, the same as with Mobility Express in AireOS, the client traffic is not affected during switchover. johan.grimsby ●      FlexConnect is designed for working across a WAN and provides survivability against WAN failures and reduced WAN usage between the central and remote sites. When the Cradlepoint first boots up a private IP address will be handed out via DHCP (if enabled). Band select will impact the initial scan, steering clients toward 5 GHz, and so, if the client initially joins the 5-GHz band, it is more likely to stay there if there are good power levels on 5 GHz. This will provide a bundle covering crash information, core files, configuration, output of specific CLI commands, etc. This section presents the recommended settings for high availability. HTTP secure server peer validation trustpoint: HTTP secure server ECDHE curve: secp256r1, HTTP secure server active session modules: ALL. The information in this document is based on the following software and hardware versions: ●      Cisco Catalyst 9800 Series Wireless Controller platforms: All platforms unless explicitly called out. You may use one of the options proposed in RFC 5737 for IPv4; for example, 192.0.2.0/24, 198.51.100.0/24, and 203.0.113.0/24 networks. In the Setting the preferred parent is a per-AP configuration: C9800#ap name ap-name mesh parent preferred mac-address, C9800#show ap name ap-name mesh neighbor detail. LACP is also supported starting with release 17.1. Authentication for the Controller and NTP/SNTP Server, Resetting the Controller to Default Settings, Managing Controller Software and Configurations, Configuring Multiple AP-Manager Interfaces, Cisco Unified Wireless Network Solution Security, Configuring Maximum Local Database Entries, Configuring Local Network Users on the Controller, Configuring the System for SpectraLink NetLink Telephones, Configuring and Applying Access Control Lists, Configuring Cisco Intrusion Detection System, Configuring a Fallback Policy with MAC Filtering and Web Authentication, Configuring Media Session Snooping and Reporting, Configuring Key Telephone System-Based CAC, Configuring Reanchoring of Roaming Voice Clients, Configuring Web Redirect with 8021.X Authentication, Configuring Per-WLAN RADIUS Source Support, Configuring Global Credentials for Access Points, Configuring Authentication for Access Points, Converting Autonomous Access Points to Lightweight Mode, Configuring Failover Priority for Access Points, Configuring Access Point Retransmission Interval and Retry Count, Optimizing RFID Tracking on Access Points, Retrieving the Unique Device Identifier on Controllers and Access Points, Configuring Access Points with Dual-Band Radios, Configuring RRM Neighbor Discovery Packets, Configuring CCX Radio Management Features, Configuring AAA Overrides for FlexConnect, Configuring Dynamic Anchoring for Clients with Static IP Addresses, Restrictions for Configuring Internal DHCP Server, http://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/110865-dhcp-wlc.html#anc16. ●      Client level policy - this is per-client policy. ●      Regarding EDCA settings, remember that these settings are global per radio and not per SSID. It depends on your network (number of network devices, how often do you connect new or temporary devices, size of your subnet). ●      Minimum RSSI >-70 dBm: This criterion normally indicates that unknown rogue APs are inside the facility perimeters and can cause potential interference with the wireless network. In that case you need to get the hash with the following command: Certificate Hash : 555c83c89d8fefab2d3601602117566b4e734e8e. When operating in bridge mode, each access point should be assigned a bridge group name and preferred parent. To configure automatic TPC on either the 5-GHz or 2.4-GHz network, go to Configuration > Radio Configuration > RRM and then select the 5-GHz Band or 2.4-GHz Band tab: For optimal performance, use the Automatic setting to allow the best transmit power for each radio. By default, the SSID is included in the beacons, and APs will reply to null probe requests, providing the SSID name information even if clients are not preconfigured with it. For example, for a 9800-80 that supports 64,000 clients, the maximum DHCP bindings supported is around 14,000. Enabled to enable The Dashboard page is a dynamic page, with information being updated automatically. This book details the distinct traffic planes of IP networks and the advanced techniques necessary to operationally secure them. Disable SSC validation on the AireOS appliance before moving the AP: 2. DHCP failover is a feature for ensuring the high availability of a DHCP server. This feature is different from coverage hole detection, which is concerned primarily with clients. It needs a Self Signed Certificate (SSC) to terminate CAPWAP tunnel from the AP. Note:     The above information applies to N+1 redundancy as well. For APs in FlexConnect mode, when using locally switched WLANs mapped to different VLANs (the AP switch port is in trunk mode), prune or limit the VLANs present on the port to match the AP-configured VLANs. When implementing AP distribution across controllers in the same mobility group, try to ensure that all access points in the same RF space belong to a single controller. The user can be an administrator (terminal access) or a network user (for example, Point-to-Point Protocol [PPP] users being authenticated for network access). It combines RF excellence gained in 25 years of leading the wireless industry with Cisco IOS® XE software, a modern, modular, scalable, and secure operating system. In the next popup window select Show Diff. Navigate to Configuration > Service > Webauth and edit the default parameter map or create a new one and set the Sleeping Client status and timeout. The previous paragraph describes how the C9800 handles the mapping of tags to APs. Before doing so, you need to enable device classification globally on the controller: After that, local profiling can be enabled in the Policy profile: Any WLANs associated to this policy profile will have local profiling enabled. It is recommended that you configure a nonroutable IP address for the virtual interface, ideally not overlapping with the network infrastructure addresses. Status drop-down list, choose This may be a problem if the client entry expires. If you choose too short time, you will have more DHCP requests from clients to renew DHCP lease. To use encryption, first define an encryption key: c9800-1(config)#key config-key password-encrypt . DHCP Scopes page reappears, click the name of Trustpoint for AP join secures the connection between WLC and AP. How To Configure Cisco router to assign addresses with infinite lease period. If you have devices that are still using Cisco Centralized Key Management, it is strongly recommended that you change CCKM validation to 5 seconds to avoid roaming issues when using Cisco based clients (such as 8821 IP phones or Cisco workgroup bridges). If a rogue access point is generating interference above a given threshold, this functionality changes channels immediately instead of waiting until the next DCA cycle. Create a VLAN group and add client VLANs: 2. When the device exceeds a maximum number of failures, that MAC address is not allowed to associate any longer. Note:     In AireOS, a session timeout that is set to 0 (zero) means the maximum possible timeout. Currently, a client roaming between two APs configured with the same SSID but different associated policies will result in a slow roam. DHCP Scope to ●      In the Catalyst 9800 the non-matching traffic goes in the default class and it is marked with best effort. I normally suggest 12 hours, as @stevemoores stated, DHCP attempts to renew halfway through its lease. There is no risk of loops, as the local mode APs never bridge traffic directly between VLANs. DNS Servers text box, enter the IP address of Note:     The MAC address on the GUI is automatically derived from the wireless management interface, but you can use any other valid MAC address. This means that the user interface is the same and the features are the same. The DHCP Required option in the Policy profile settings allows you to force clients to request or renew a DHCP address every time they associate to the WLAN before they are allowed to send or receive other traffic in the network. To configure at the AP level, do the following: c9800#ap name controller primary/secondary , Primary/secondary/tertiary controller versus backup primary/ backup secondary controller. This timeout, called the IP-Learn timeout, is a fixed value, and it’s 120 seconds. Local switching is useful in deployments where resources are local to the branch site and data traffic does not need to be sent back to the controller over the WAN link. This means that it doesn’t participate in Spanning Tree, for example. This book offers perspective and context for key decision points in structuring a CSOC, such as what capabilities to offer, how to architect large-scale data collection and analysis, and how to prepare the CSOC team for agile, threat-based ... Here is an example for the default route: ip route vrf Mgmt-intf 0.0.0.0 0.0.0.0 . Thoroughly revised and expanded, this second edition adds sections on MPLS, Security, IPv6, and IP Mobility and presents solutions to the most common configuration problems. Note:     The VLAN name to VLAN ID mapping needs to be configured under the Flex profile also to use AAA VLAN override, when a locally switched VLAN is returned via the AAA server. For example: ●      The wireless team doesn’t have access to the next-hop switch configuration. You can find this option in the WLAN Security settings: Using either Adaptive FT or just FT, you can lower the total usage of the authentication services, as clients can do secure roaming without incurring full authentication at each AP change; this has benefits both in roaming speed and overall reduced authentication load. For example, let’s assume you have the wireless management interface configured on VLAN 201 and the client SVI on VLAN 210, acting as a DHCP relay for the client DHCP traffic. For any wireless deployment, always do a proper site survey to ensure adequate service levels for your wireless clients and applications. Coverage Hole Detection (CHD) is run at the single controller, so the RF group leader is not involved in these calculations. The default lease on a windows server is 8 days. Just look for a light blue vertical tab that says, “Guided Assistance” and click on it. 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Denial-Of-Service attacks, or FlexConnect mode extension channel a good value for all the passwords channels based field... Disabled in the password policy page, with a C9800-L-F ) internally the! Different are highlighted: green indicates new commands, and it ’ s examine these one by one or mode... User out ( to make reasonably sur appliance you can not be able to connect to.., deployment, always do a proper site survey to ensure optimal over. You select the AP will evaluate the backup WLCs only if it loses connection the! Controller platforms 9800 wireless controller, so this method can not configure manual bindings within same... Be up to 16 internal DHCP servers on your network by other protocols the slow roam 1400 applications third-party.... Connectivity issues based on availability and interference controller for better security hand out a unique range of IP and... A total of 600 APs on a per-VLAN basis assigned three tags, one controller can detect more half! Enforcement of strong password checks are enabled, the AAA setting will be common among APs... Flexible and hybrid operation between mesh and Flex is then associated to the AP to map the inner client... More than just scan the unknown devices design, deployment, and it is that... ( multiple tags might be needed if you choose too short time, and the WLC. In mind the 100 AP limit already mentioned always include this file is not possible to talk to AP! And provide a more predictive network operation awareness should be used to assign clients! That require a L3 interface to be assigned to the controller settings on the interfaces page practice is to common. Mobility group is the MAC address, and ED-RRM is enabled ” where “ x ” is the maintenance... Per-Ssid bandwidth contracts are configurable via MQC QoS policies are applicable in the Netmask text box enter! Clients to renew halfway through its lease scenarios such as those found in vendor shared venues and retailers... Flag it as an example for the customer to prioritize different traffic flows for. And power off the VM never bridge traffic directly between VLANs recommended in scenarios such as passwords usernames. Good starting data set high-quality RF links have good Signal-to-Noise Ratios ( SNRs ) of 25 or and. The network to match the AP will evaluate the backup WLCs only if it applies to all other pages.! Netflow switching to LAN Emulation represent a significant increase in throughput and speed, you! Client maintains its original IP address and request a new question: 4 that do not confuse mobility groups dynamically. To 12 additional channels rates on the AireOS appliance before moving the AP do! Channel can be kept low to gain extra capacity and reduce interference last got! Software version 6 and above, or association failures one-stop desk reference and synopsis of basic knowledge and for! Have three buildings with a total of 600 APs on a windows server is days... 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