Configuring Destination Trunk VLAN Filtering (Optional)
In addition to filtering VLANs on a trunk, you can also apply the allowed VLAN list to access ports. Destination trunk VLAN filtering is applied at the destination. Destination trunk VLAN filtering does not reduce the amount of traffic being sent from the SPAN sources to the SPAN destinations. When a destination is a trunk, you can use the list of VLANs allowed on the trunk to filter the traffic transmitted from the destination. (CSCeb01318) Destination trunk VLAN filtering r..
Using a Default Set of Authentication Methods
AAA authentication configuration includes commands by which a set of authentication methods is defined. A single authentication method is exactly what it sounds like—a way to authenticate a user. For example, one method is to ask a RADIUS server to authenticate a login user; another is to let a router look at a set of locally defined username commands. A set of configuration methods represents an ordered list of authentication methods, each of which is tried in order until ..
WAN Edge Classification and Provisioning Models
One of the most common questions raised when planning a QoS deployment over the WAN is "How many classes of traffic should be provisioned for?" The following considerations should be kept in mind when arriving at an appropriate traffic class model for a given enterprise. Slow/Medium Link-Speed QoS Class Models Slow-speed ( 768 kbps) links have very little bandwidth to carve up, to begin with. When the serialization implications of sending Interactive-Video into the LL..
You can use the following configuration command to adjust a router's SNMP trap timeout value: Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#snmp-server trap-timeout 60 Router(config)#end Router# To adjust a router's SNMP inform timeout value, use the follow configuration commands: Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#snmp-server inform timeou..
Compressing Frame Relay Data on a Subinterface
Cisco offers several different types of compression with Frame Relay. You can opt to compress only the TCP headers as follows: Central#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Central(config)#interface Serial0 Central(config-if)#encapsulation frame-relay Central(config-if)#frame-relay ip tcp header-compression passive Central(config-if)#exit Central(config)#end Central# This command also works at the subinterface level: Central#..
