Interface identifiers (IDs) in IPv6 addresses are used to identify a unique interface on a link and are sometimes referred to as the "host portion" of the IPv6 address. Interface IDs must be unique on a link. They are always 64-bits long and can be dynamically created, based on the data-link layer address. The specific data link layer type of the interface determines how the IPv6 interface IDs are dynamically created and how address resolution works. For Etherne..
SNMP Versions 1 and 2 included a standard generic MIB, with initial MIB-I (version 1, RFC 1156) and MIB-II (version 2, RFC 1213). MIB-II was actually created in between the release of SNMPv1 and v2, with SNMPv1 supporting MIB-II as well. After the creation of the MIB-II specification, the IETF SNMP working group changed the strategy for MIB definition. Instead of the SNMP working group creating standard MIBs, other working groups, in many different technology areas, were task..
This section discusses how to configure IPX addresses on LAN and WAN interfaces for Cisco routers. We also discuss the configuration of the four IPX LAN interface encap-sulations used in an IPX environment. LAN Interface Configuration All Cisco routers that are routing IPX have a unique IPX network.node address on each of the attached LAN segments. This address enables the router to know which networks are connected to each interface and where packets for those networks sho..
The Cisco PIX and ASA VPN capabilities have their roots in Cisco IOS VPN technologies. VPNs were first introduced in the Cisco IOS router product line and then added to the PIXs in an early 5.x release. Like the routers and the concentrators, Cisco PIXs support many VPN solutions including IPsec, PPTP, and L2TP. Because of their flexibility, they can be used in many different situations. The ASA was introduced in the spring of 2005. The ASA is a unique hybrid security applian..
Configuring Supervisor Synchronization
By default, the active supervisor synchronizes its startup configuration and configuration register values with the standby supervisor. You also can specify other information that should be synchronized. First, use the following commands to enter the main-cpu configuration mode: Router(config)# redundancy Router(config-red)# main-cpu Then use the following command to specify the information that will be synchronized: Router(config-r-mc)# auto-sync {startup-config | config-reg..
