ccnp r&s salary

ccnp r&s salary

Promiscuous The LP field is all there, but it will assign a default value to this route locally, which is 100 , and then pass it to its own IBGP. Identify the type of message: Router ospf 100 Match tag matches based on the tag of the route Experimental verification Show ip cef detail After receiving this poisoning message, B erases 10.4.0.0 from the routing table, but it still exists in the rip database ,ccnp r&s salary, the status is possible down , the garbage collection time ( Garbage colletion CISCO default 60S ), the route is from B. The database is erased. Another way is to use ARP ACL : When a bridge starts to active, each port sends a BPDU every 2s , and when a port receives a better BPDU than the one sent now , the local port will stop sending if it is within a certain period of time ( But after saving for 20s ), he no longer receives better from neighbors. ? WWW and SMTP belong to the Isalated VLAN , so they cannot access each other; WWW and SMTP servers can only communicate with the promiscuous port, that is, with the router. All BGP neighbors TCPsession and BGP neighbor state are reset ... ? O IA C * i Route tag TAG ( to be revised ) ? Interface vlan 100 None 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 Network 192.168.254.0 0.0.0.255 area 1 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. Simplify the synchronization of VLAN information bases in large campus networks (same VTP management domain) About route reflection clusters Redirect time 600 sec, forwarder time-out 14400 sec Preemption disabled Fa0/20 One way is to establish a fully interconnected IBGP The version of the last bgp table sent by TblVer to the neighbor The configuration of R3 is as follows: We look at the above picture, the external detail route 172.16.32.0 – 39.0/24 , and the summary route 32.0/21 are introduced into OSPF by R1 , now The larger the Local_Pref , the higher the priority The configuration of R3 is as follows: Ip arp inspection vlan 100 logging acl-match none Each router running RIP manages a routing database that contains routing entries to all reachable destinations on the network. These routing entries contain the following information: Configure BPDUs 0 7 15 31 1,10 If the currently configured keepalive timer is greater than min ( holdtime ) /3 , then int[min ( holdtime ) /3] The route closest to BGP NEXT_HOP is preferred , and the route is the route with the smallest IGP metric to the next hop router . Untitled-1 1 In the BGP process: neighbor xxx default-originate to pass the default route to a specific neighbor. This configuration does not require a default route in the routing table. A bit like OSPF 's default-originate always Configuration Example To do another test, PC1 privately modifies the IP address: When both the primary and secondary addresses exist, RIP will use both the primary and secondary addresses as the source to send routing updates. So R1 and R3 will learn the routing update of 2.2.2.0 . But R3 ca n't learn 1.1.1.0 , on the one hand, because R1 sends updates to R3 and is ignored by R3. Vlans allowed and active in management domain Neighbor 1.1.1.1 update-source Loopback0 * i BGP routing table entry for 11.11.11.0/24, version 2 R1#show glbp Offset-list { access–list-number | name } {in|out} offset [ interface-type interface-number ] Access port processing frame process Bgp confederation identifier 345 bgp confederation peers 64513 neighbor 3.3.3.3 remote-as 64512 Ip as-path access-list 1 permit .* router bgp 300 The first 8 bits of the route must match the first 8 bits of 172.0.0.0 , the other bits are not concerned, and the mask must be /8 . Remove VLANs from the current list The solution is as follows: 1. On the R3 , declare the directly connected network segment of 10.1.13.0 into OSPF , and R5 is the same; 2. Modify it on R3 . S0 DCE S uppercase S , stale , indicating expired routes PVLAN configuration creates the primary VLAN : After the bgp bestpath compare-routerid command is configured , the principle is skipped and the route with the smallest RID is selected as the optimal. R1 announces 1.1.1.0 into BGP , and R2 learns these two routes from 10.1.12.1 and 10.2.12.1 respectively. 10.1.13.1 Network consolidation (same protocol or different protocols) Route summary issues to be aware of Set interface Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. Per packet load-sharing is disabled IP unicast RPF check is disabled Inbound access list is not set Outbound access list is not set The LP attribute of the route is preserved throughout the federation Enables multiple gateways to be used at the same time and automatically detects active gateways. Note that there must be three layers between the DHCP server and the trunk interface. Because the unicast packet is relayed, the source address is the trunk interface configured with ip helper-address . Therefore, when the DHCP server returns the packet, the destination IP address of the packet. This is the interface IP of the interface configured with ip helper-address . At 1 o'clock, it can be considered that this address represents a broadcast address or a multicast address in the Ethernet, or represents a broadcast address or a function address in TR and FDDI . The next bit is the G/L bit (also known as U/L, where U is global). When this bit is set to 0 , it represents a global management address. Show ip bgp Interface FastEthernet0/1 switchport access vlan 10 Router bgp 300 Second , select a root port on the non-root bridges SW2 and SW3 , as shown in the figure, because these ports reach the minimum overhead of SW1. About IP Routing 10.1.34.3 This environment is relatively simple, PC and DHCP server in the same VLAN , I mainly want to confirm that the ordinary switch pair is carried Solution: Modify the routing protocol administrative distance Once the ORF is deployed , the BGP peers will negotiate the ORF capability in the open message when the BGP peer relationship is established . If the negotiation succeeds, the ORF content is pushed using the route-refresh packet . Origin codes: i - IGP, e - EGP, ? - incomplete Route-map nat4 permit 10 The configuration of R2 is added as follows: Solution: Use distribution lists to circumvent suboptimal path problems 101 The OSPF metric on R4 going to 3.3.3.3 becomes 101 , which is larger than the metric going to 5.5.5.5 . Therefore, R4 goes to Network xxx mask yyy route-map zzz None Between R1 and R2 , the original R3 and R4 are updated through a multi-access network, and BGP is run . Note that at this time, in the routing table of R2 , the 3.0 route is killed. Note that, in fact this time, Area within OSPF routers generated LSA has been loaded into the R2 of the OSPF Database alone rather than in R2 from the OSPF Database calculated route and prepares route entry is loaded into the routing table before, in the distribution direction play a role in the list, the 3.0 routes filtered out, so R2 routing table, there is no 3.0 the OSPF routing. However, although there is no 3.0 route in R2's own routing table , this does not prevent R2 from flooding the relevant LSA to R3 . Therefore, R3 still has 1.0 , 2.0 ,3.0 and 12.0 of the OSPF routing.