ccnp routing and switching exam fees

ccnp routing and switching exam fees

The description of several fields ( ISL header) in the above figure is as follows: For the next hop and route tag, see Volume I, page 189 . Local-Preference Set community no-advertise route-map setCommu permit 10 router bgp 300 Next Hop The secondary VLAN is mapped to the SVI interface of the primary VLAN , allowing for Layer 3 switching of pVLAN ingress traffic. *Mar 1 00:11:48.043: ICMP: echo reply rcvd, src 2.2.2.2, dst 192.168.123.3 Other configuration commands Match metric matches the route with the specified metric. match route-type matches the specified type of route match community matches the BGP community. Neighbor 10.1.12.2 capability orf prefix-list receive Management adjustments Then, first R2's own routing table will change, 3.0 routing is filtered out, and R3 is the downstream RIP router, 3.0 can not learn. R4#show ip bgp 172.16.0.0 Support PVST Interface 200 Ip default-gateway 192.168.100.254 Interface fast0/0 Rule example No synchronization no auto-summary Bgp confederation identifier 345 neighbor 4.4.4.4 remote-as 64512 neighbor 4.4.4.4 update-source Loopback0 Slot Slot unit 0 VC -1 a(bc)?d Border Gateway Protocol (BGP) Connected In the ORIGINATOR_ID , then it is known that a routing loop has occurred , so the route is ignored. 1 state change, last state change 00:07:24 MAC address is 0007.b400.0101 (default) Owner ID is cc00.043c.0000 Activate Port-Security (on the access interface) Weight Router ospf 100 Protocol Interface The problem that the static route associated with the outgoing interface is in the network Port Weight ? Spanning-tree After the configuration is complete, use clear ip bgp * soft to reset it softly. Definition of 1042 . The most commonly used encapsulation format today is the format defined by RFC894 , commonly referred to as Ethernet II or Ethernet DIX . Note that if you attempt this time SW2 on F0 / 2 interface priority piecemeal, and it is useless, because the port is looking at the sender ID . So if on SW1 , the port priority of F0/2 is reduced. Then on SW2 , F0/2 will win as the root port. LP takes the maximum value of LP in the detailed routing When an AS receives a route to the same destination but passes through two ASs , it determines the local-pref value of the two routes. Community value (route), then how to write it? If you directly match no-export , it will match with 11.11.11.0 , so you should use the exact-match keyword. If configured on R3 as follows: Switch(config)# spanning-tree vlan vlan-id root {primary | secondary} [diameter diameter ] In ASBR when re-released many ways to modify the external LSA of TAG value. Router bgp 300 The front is to use static routing. If dynamic routing protocol is used, the situation is different. For example, IGRP or EIGRP , the network specified by the ip default-network command must be obtained through IGRP or EIGRP (declaration, learning or redistribution). ), the default route can be dynamically passed to other protocol routers. (Optional) Configuring the security address aging time 10.1.31.0/24 This subnet has been successfully updated " 10.1.31.0 " because it is the same as the main source of the R1 update source interface . 9 DAI relies on DHCP snooping technology. In a network environment where users dynamically obtain IP addresses, we deploy DHCP. / / Start bgp dampening , the default is valid for all EBGP routes, you can also add route-map 100 LocPrf The distribution list is deployed in a link state routing protocol such as OSPF . If the out direction is to be used, it can only be used in such a situation. Ip dhcp snooping trust R5 release B segment RIP routing, R2 and R3 can learn, at the moment we are in R2 and R3 are on to OSPF to inject RIP routing, assuming that R2 injected first, then the B route will be R1 update to R3 , R3 this When you learn B routing from both RIP and OSPF , then it will: ? Version The meaning of this command here is that only 1.1.1.0 is allowed to go out of the route redistributed from the RIP routing protocol (to OSPF , there is no direction, as long as the interface is running OSPF ) Ip prefix-list ABC seq 5 permit 172.0.0.0/8 Show tcp bri Difficulties Case Hard reset R1 and R3 , R2, and R5 establish an EBGP neighbor relationship. 2) Activate TC while timer , and then send the TC- set BPDU out from all non-edge designated ports and root ports . In this way, topology change information quickly floods the network. At this time , OSPF routes are re-advertised to BGP on R11 , so that R12 can learn. After R12 learns the route, it finds that BGP attributes (including AS_PATH ) are lost. Because OSPF redistributed into BGP , the default does not automatically tag values are copied into the AS_PATH , the need to R11 on LocPrf BGP activity 1/0 prefixes, 1/0 paths, scan interval 60 secs Synthesis example 2 : A advertises the detailed route to B , B advertises the detailed route to C and D , and C advertises the summary route. At this time, the summary route will be transmitted to B in addition to being notified to D , and this may cause problems. Therefore, you need to filter the summary route on the IP distribution-list x of neighbor B on C. Otherwise, a routing loop will occur. Metric 100 i // is equivalent to route-map not matching ( permit ) any entry, so all details are released Private AS number Community-List. 11 the permit IP no-export (or no-export into NO-ADV ) Solution: Use distribution lists to avoid the sub-optimal routing problem s> 172.16.1.0/24 Protocol overview 1 : RIP-1 ; Set community 100:200 no-export set ip address prefix-list mingxi route-map RP_huizong permit 10 match ip address prefix-list huizong match ip route-source xiayitiao Certification The first 8 bits of the route must match the first 8 bits of 172.0.0.0 , the other bits do not care, and the mask must be /8 , /9 , /10 , ..., /24 ? 10.1.13.1 Routing strategy needs (reliability, redundancy, offloading model, etc.) If the route is learned from other neighbors, the default value (locally the route) is 0. A CFI of 1 is indicated as a non-classic format. Used to distinguish between Ethernet frames, FDDI ( Fiber Distributed Digital Interface ) frames, and Token Ring frames. Access-list 1 permit 192.168.12.0 router rip Route-map test permit/deny 10 Redistribute ospf 1 match internal external 1 5.5.5.5 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. routing R3 and R4 , R4 and R5 establish IBGP neighbor relationships, and R3 R4 R5 uses LOOPBACK as the update source and refers to the neighbor . CCIE.txt format: Port Vlans in spanning tree forwarding state and not pruned Interface mode, configure the interface as DAI trusted , the default is untrusted Port Mode Encapsulation Status Native vlan Fa0/20 on 802.1q trunking 1 Other uses * i100.0.1.0/24 Modify the default AD value of BGP . The command is as follows: RIPV1 operational behavior 32 In the list, the first AS number (that is , the one that goes to the destination closest to the AS ) Redistribute ospf 1 route-map test Note that the neighbor 1.1.1.1 filter-list x weight yyy command can be used multiple times for a neighbor, that is, set different weights for different routes . But the neighbor 1.1.1.1 filter-list 1 command, in the same neighbor in or out direction, can only be used once, these two commands are very different Then let's go to R4 and see: CISCO Note: If the DHCP relay agent is enabled but DHCP snooping is disabled, the DHCP option-82 data insertion feature is not supported. 100 i View and verify 32768 Situation 1 10.1.23.2 Using route reflector 23 Displays all BGP routes received from the specified neighbor (original route before the local inbound policy is executed) BGP routing table entry for 1.1.1.0/24, version 2 100 ...... 192.168.8.0/24 R1(config-router)#distribute-list 1 in ? // All interfaces Message Type Router bgp 345 BGP activity 1/0 prefixes, 1/0 paths, scan interval 60 secs Next Hop BGP configuration The RID is the largest IP address on the router and tends to be assigned to the loopback address. It can also be set manually by the bgp router-id command. If a path contains an RR attribute, the route generator ID ( originator ) will replace the RID in the optimal path selection process. 100 Garbage colletion/flush timer R1 and R2 establish EBGP . On R1 , the network announces 11 and 12 network segments. To filter out 12 network segments, do not let them pass to R2 . End deny any The interface will not send BPDUs , and will also ignore received BPDUs. Interface vlan 10 Clear ip bgp {neighbor-address} soft in/out specifies a specific neighbor, it is recommended BGP table version is 10, local router ID is 2.2.2.2 Access switch configuration: END Ip arp inspection vlan {vlan_ID | vlan_range} Show ip bgp dampening Network, which is consistent with topology expectations, but the underlying cause is still due to the learning of R2 compared to IBGP routes from R3 . AS65102 as a transit region ( trasit AS ), the AS inside BCDE running the OSPF , such that AS within reachable; D and C did not run * i DAI 's work depends on DHCP snooping Maximum frame: 1518+4=1522 VLAN works on the second layer of the OSI reference model After the Uplinkfast feature is activated , the switch automatically adjusts some parameters: Bytes Or the above example, if we R1 on, of ping 1.1.1.2 REPEAT size. 1 1501 , at this time, R1 due to the generation of the IP packet is larger than Neighbor maximum-prefix xx We found R4 on the R3 passed over 100.0.1.0 this route, AS_PATH to 100 100 , from R5 over is 200 , apparent from R5 to the routing AS_PATH shorter, it is preferred by R5 to R2 route. Ip arp inspection filter arp_acl_name vlan {vlan_ID | vlan_range} [static] If an OSPF in- process route cannot be summarized: Set tag 10 100 ! It takes effect on routes re-advertised from other dynamic routing domains. It does not take effect on direct routes (still 0 ) Tag rewrite with Fa0/0, 10.1.12.2, tags imposed: {} We spotted FIG, R1 and R2 between runs RIP to exchange routing information, R2 by RIP learned the R1 release over 192.168.1.0/24 and 2.0 / 24 routing information loaded into the routing table, labeled R & lt . While R2 and R3 and running OSPF , establish OSPF adjacency, R2 also from R3 , by OSPF learned the two routes: 3.0 and 4.0 / 24 , is also loaded into the routing table, labeled O . So, for R2 , it has its own route to the whole network, but inside R2 , we can understand this : it will not change the route learned from RIP .The OSPF route is told to R3 ,ccnp routing and switching exam fees, and the route learned from OSPF is not sent to R1 as a RIP route . For R2 , although there is complete routing information in its own routing table, it is as if there is a gap between the entries of R and O , which cannot be exceeded.