Configuring a Destination as an Unconditional Trunk (Optional)
To tag the monitored traffic as it leaves a destination, configure the destination as a trunk before you configure it as a destination. To configure the destination as a trunk, perform this task: This example shows how to configure a port as an unconditional IEEE 802.1Q trunk: Router(config)# interface gigabitethernet 5/12 Router(config-if)# switchport Router(config-if)# switchport trunk encapsulation dot1q Router(config-if)# switchport mode trunk
Simple Password Protection for the CLI
Figure 21-1 provides a visual reminder of some hopefully familiar details about how users can reach a router’s CLI user mode, and move into enable (privileged) mode using the enable command. Figure 21-1 Router User and Enable Modes Figure 21-1 shows three methods to reach user mode on a router. The figure also applies to Cisco IOS–based switches, except that Cisco switches do not have auxiliary ports. Cisco IOS can be configured to require simple password p..
In this section I'll discuss how to upgrade the VPN Client software. Cisco VPN 3000 concentrators support two types of automatic client upgrades: the 3002 hardware client and the Windows VPN Client. I'll cover what you have to do on both the concentrator and VPN Client side of the connection. Concentrator: Client Updates There are two types of client updates or upgrades the concentrator supports: the Cisco VPN client software and the 3002 hardware client. Upgrades of both c..
The access layer is present where the end users are connected to the network. Access switches usually provide Layer 2 (VLAN) connectivity between users. Devices in this layer, sometimes called building access switches, should have the following capabilities: ■ Low cost per switch port ■ High port density ■ Scalable uplinks to higher layers ■ User access functions such as VLAN membership, traffic and protocol filtering, and quality of service (QoS) ■ Resiliency throu..
One of the most significant shortcomings of PIM-SM is that within any given multicast network boundaries, there can be only one RP for any multicast group. This has several potential problems including slow convergence after an active RP failure and potentially extra hops required to reach a distant RP. Anycast RP solves these problems. The first RP configuration looks like this: Router-RP1#configure terminal Enter configuration commands, one per line. End with CNTL..
