ccnp route rene molenaar pdf

ccnp route rene molenaar pdf

Conditional delivery of default routes Open loopback on R2 , IP is 172.16.10.0/24 , 172.16.11.0/24 Track 2 rtr 2 reachability OPEN message About the prefix list 10.1.13.1 4 3 When an RSTP switch detects a topology change it will: 9.9.12.0 is directly connected, FastEthernet0/0 Neighbor IBGP_peers send-community DAI - Dynamic ARP Inspection Weight Introduction and delivery of BGP routes 6 As you can see, the route carries the atomic-aggregate attribute, which is used to inform the downstream neighbor that this is the route attribute that summarizes the route and loses the detail. At the same time, the aggregator attribute identifies the summary location ( the RouterID of the AS and the summary router ). Network 200 i If ip routing is enabled , the command is ignored (but the default route Ip route 0.0.0.0 0.0.0.0 x ) is displayed ; Router bgp 345 As-path: all specific routes received as numbers are placed in {} , the calculation AS_Path the length of the AS is only counted as . 1 th AS Y Switch, the switch also forwards it with an updated message to all attached LANs for which it is the designated switch. Destination Address (Route Prefix): This is the destination network number associated with the route entry. A complete route prefix consists of: network number + prefix length On CISCO IOS , interface x interface mode: [ac 1-2]$ The time interval between consecutively transmitted BPDUs of the root bridge . Default 2S ? Unicast Update Ip arp inspection log-buffer logs number_of_messages interval length_in_seconds ! Advertised to update-groups: 1 ? The cost of the route. When the look-up table, the binary 0 , . 1 bits match, and for an exact match, i.e. purpose MAC and CAM table MAC needs For ISL packages, MTU=1548 ( explained below ) / / Detailed release LLC. ( The Logical Link Control ) by the destination service access point DSAP ( Destination Service Access Point ), source service access point SSAP ( Source Service Access Point ) and Configure Port Security Rate Limiter Neighbor xxxx soft-reconfiguration inbound Information, so that ISP1 is hanging, so the data of the PC accessing the 100 network is switched to ISP2 , and the network is constantly 100 i The original attribute is i , so R3 and R4 learn BGP route 1.1.1.0 from R1 and R2 at the same time . After the decision, the traffic to 1.1.1.0 will be sent from R2 to R1 , so the sub-optimal path is obtained. Neighbor 10.1.12.1 dmzlink-bw Bgp connected eigrp Instead of choosing R3 ? This is determined according to the routing principle of BGP (see the BGP document of Red Tea Three Cups Zhu SIR ). Here, the final impact of routing is such a rule "preferred routing from EBGP neighbors (relative to IBGP neighbors) "), R2 is the EBGP neighbor of R5 , so it is preferred. Toxicity reversal Local origin The EBGP neighbor learns 2.2.2.0 . The RIP management distance is 120 and the EBGP is 20. Therefore, EBGP routes are preferred . How to make R1 preferred RIP Configure BPDUs If the penalty value exceeds the pre-set threshold - the suppression limit: the penalty value reaches this threshold, the route is suppressed, ie not released, until the N half-life, the penalty value is reduced to another threshold: re-use threshold (de-suppression threshold) ), the suppression of the route is lifted. O E2 1.1.1.0 [110/20] via 10.1.23.2, 00:06:40, Serial0/0 Supplementary] When the same AS in the BGP router A introduces a route, A router transmitted the route to its IBGP neighbors B , has been Router bgp 345 Select the port for the Channel The configuration of R3 is as follows: Native Vlan KEEPALIVE defaults to 60s . Keepalive timers do not interact in Open messages. How do you set the timer between two BGP neighbors? If the currently configured keepalive timer is less than min ( holdtime ) /3 , the configuration value is taken. If the static keyword is not used , the ARP packet will be matched by the ARP ACL . If there is no match, the DHCP snooping database security entry will be checked again. If there is a valid entry, the data will be released. If not, discard it. Example 2 of ip community-list (logical relationship): //Get out a summary route instead of the default route Route 2 : AS_PATH : 100 Due to the lack of a feedback mechanism, the interface connecting A to Root from Listening to Forwarding needs to experience a delay of 15*2s . In this case A , B , C the second line on the user traffic problems (since D in better received BPDU after the P1 port block , this time ABC corresponds A root port transitions to the forwarding are in the network before the " buffer zones " ) Set as-path set community RR self-originated route The problem that the static route associated with the outgoing interface is in the network Neighbor 1.1.1.1 weight 2000 sets the route sent by the neighbor to 2000 weight (local) R4#sh ip b After completing the configuration, R2 show ip route ( Optional ) Management MAC table RIP and OSPF Manually modify the hop count of RIP . First configure matching routes On R4 , there are also redundant links to 100.0.1.0 and 2.0. Both R3 and R5 can reach the two network segments, and finally R4 selects R3 as the next hop to the two network segments. Because in the BGP routing principle, the route preference decision is compared to the BGP routerID , and the RouterID of R3 is smaller than R5 , so R4 is preferably R3 . neighbor RC-ip the EBGP Multihop- 2 // jump between them number 2 Sw1(config-if-range)#switchport mode trunk 200 The behavior of the router is hop-by-hop. Each router along the path to the destination network must have a route to the destination. Ip address 192.168.10.254 255.255.255.0 R2(config-router)# distribute-list 1 in fa0/0 It is allowed to write multiple next hop IPs , but these IPs must be the interface IP of the directly connected router . HELLO time Then in each sequence, we can define two elements for policy deployment: matching conditions, performing actions . You can define multiple conditions, and when the conditions are matched, they will perform the relevant actions specified by the set . Slightly mention here, the set statement is not necessary, for example, if the route-map is only to match the traffic of interest,ccnp route rene molenaar pdf, then there may be only a match statement and no set statement.