ccnp route exam

ccnp route exam

DHCP option 82 , also known as DHCP relay agent information option ( Relay Agent Information the Option ), is the DHCP option in the packet, which numbered 82 . rfc3046 defined option 82 , the position of the option option 255 before the other option after. Metric 802.1W BPDU format Next Hop The MAC address pool of the CISCO CATALYST switch can hold up to 1024 addresses. The model of the switch determines the number of available MAC addresses . Not all Catalyst switches can support such multiple MAC addresses. Example 2 of ip community-list (logical relationship): ? Access-list 1 permit any route-map PBR permit 10 match ip address 1 At the same time network 1.0.0.0 , then 1.0.0.0 will be announced We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows Distribute-list 1 in RSTP is designed so that we don't have to rely on the adjustment timer and can make the interface safely transition to the forwarding state. To achieve fast convergence on the interface, RSTP introduces some new concepts: Route redistribution is directed. The routing information of the A routing domain is injected into the B routing domain. We need to configure it in the process of the B routing protocol. For example, to redistribute other routing protocols to RIP , then configure. As follows (republishing to other routing protocols is similar): On CISCO IOS , interface x interface mode: Bgp client-to-client reflection Note: RR only creates or updates CLUSTER_LIST when the route is reflected . In the following cases, the RR does not create this attribute: Let's look at the picture and deploy a two-way re-release on R2 and R3 . BGP based policy accounting on input is disabled BGP based policy accounting on output is disabled Hardware idb is FastEthernet0/0 CAM table Configuring Example 6 Deploying Distribution Lists When Republishing Between Protocols Router bgp 100 The client ( D ) passed to it by the RR is not passed to the non- client (E) Private-vlan association 101,102 3.3.3.3 Configuration command: In interface mode, you must configure the interfaces on both ends of the link. After the completion, you can show ip rip database to view the routing details. At this time, he himself will still forward if he receives the data packet to 3.0.0.0 , but will not forward to other rips. Experimental phenomena: RFC1722 Route tag TAG ( to be revised ) Interface f0/2 Abc+d !! Take the default route SW1 (config-if) # glbp 1 priority 120 We look at the above picture, R1 , R2 have issued routes, R3 on these detailed routes are summarized, summarized into 172.16.0.0/16 , summary routes are 12 Access-list 1 permit 1.1.1.0 Neighbor 10.1.23.3 local-as 201 [no-prepend] [replace-as] [dual-as] ? However,ccnp route exam, if the R1 release carry on a tag external routes, and R2 re-released on OSPF into RIP , tag lost: / / Set the interface mode to Trunk mode Match ip address 1 Recognized Port-Security Overview Flex links and Port-Security are not compatible with each other Configuration example Basic VLAN concept R1 Used to announce aggregated and selected detail routes (suppress specific detail routes), followed by route-map xxx , matched by route-map Enable DHCP snooping on SW1 without going to no ip dhcp snooping information option , which is to insert option82 . The configuration of other devices is the same as the previous experiment. It is found that the PC cannot obtain the address . The debug message will be found on the gateway device, that is , debug on SW2 : relay information option exists, but giaddr is zero . The giaddr field means the IP address of the first DHCP relay agent that the message passed .