Cisco 300-110 Exam With Confidence Using Practice Dumps

The eping command is used on Cisco Wireless LAN Controllers to verify that the redundancy peer in a Stateful Switchover (SSO) pair of controllers is up and connected. This command sends ECHO packets (EoIP echo packets) to the peer controller to ensure the data path connectivity is functioning. In an SSO configuration, eping verifies the EoIP tunnel between the active and standby controllers, which is critical for state synchronization and seamless failover. If eping succeeds, it confirms that both the network path and the EoIP data encapsulation between the controllers are functional. The standard ping command (Option B) tests basic IP connectivity but does not validate the EoIP data path used by the SSO redundancy mechanism. The mping command (Option D) tests mobility control path connectivity between mobility group peers, not the SSO redundancy path. The rping command (Option A) is not a standard Cisco WLC command for testing SSO peer connectivity. Reference: WLSD Study Guide — WLC SSO Troubleshooting, eping Command, Redundancy Peer Connectivity Validation.

In a Cisco Catalyst 9800 SSO deployment using Link Aggregation Group (LAG) for network interface redundancy, the SSO pair — WLC1 (active) and WLC2 (standby) — must both have their physical interfaces connected to the network infrastructure as part of the LAG bundle. LAG on the 9800 in an SSO configuration is implemented as a multi-chassis LAG across both the active and standby controllers. This means both WLC1 and WLC2 contribute physical member links to the port channel, and the connected switches must have LACP or PAgP bundle members from both controllers in the same port channel group. When an SSO failover occurs — WLC1 fails and WLC2 takes over as active — the LAG remains operational because WLC2 ' s physical links are already established members of the bundle and continue forwarding traffic without any link renegotiation. If only WLC1 had LAG connectivity and WLC2 had independent links, an SSO failover would cause a LAG topology change requiring re-convergence, introducing downtime. WLC3 is a separate N+1 backup controller joined via a mobility tunnel — not part of the SSO pair and its LAG configuration is independent. Reference: WLSD Study Guide — Catalyst 9800 SSO with LAG, Multi-Chassis Link Aggregation, High Availability Network Redundancy Design.

To optimize roaming in a wireless network with multiple controllers, it is essential to use the same WLAN name (SSID) across all controllers. When SSIDs differ between controllers, clients perceive them as different networks and must perform a full re-association and re-authentication when roaming between APs managed by different controllers. This causes a roaming disruption equivalent to connecting to an entirely new network. By using identical SSID names on both controllers, clients can seamlessly roam between APs on different controllers within the same mobility group — the controllers exchange client state information via the mobility tunnel, enabling seamless handoff. In the scenario described, ' Copr-NET390595865WLC-1 ' and ' Copr-NET6837l638WLC-2 ' are different SSIDs, meaning clients cannot roam transparently between them. Making both controllers broadcast the same SSID name (and using a mobility group to connect the controllers) resolves this. Reference: WLSD Study Guide — SSID Consistency Across Controllers, Inter-Controller Roaming, Mobility Group Configuration.