ccnp switch prerequisites

ccnp switch prerequisites

Route-map test permit 10 SW1(config-if)# glbp 1 load-balancing host-dependent !! The same PC (source MAC ) is assigned to a fixed gateway virtual MAC But it must mention , this model because also store the relevant information , Statistically , approximately 65536 data streams (Flow) will consume 4MB of system buffer. R1(config)# access-list 1 deny 172.16.32.0 R1(config)# access-list 1 permit any Two modes of operation: normal (the default) and aggressive Origin IGP, metric 0, localpref 100, valid, internal Local Redis static route-map cisco MD5 digest : 0x73 0x52 0x60 0xE7 0x4D 0xA5 0xC7 0x4F 0xCA 0x3D 0x6F 0x1D 0x3F 0x23 0x03 0xBB Configuring static routes d routed ( dampening ) route, the route is punished, although the route may be normal at present, but will not be notified before the end of the penalty period Fa0/20 * Network Once the portfast port is connected to the device, the interface can bypass the listening and learning states and enter the forwarding state directly . Aggregate-address 172.16.0.0 255.255.0.0 as-set summary-only Origin IGP, metric 0, localpref 100, valid, external, atomic-aggregate , best HOLDTIME CISCO defaults to 180s ( 3 times KEEPLIVE timer ), which is included in the open message. BGP neighbor : When two routers establish a TCP- based BGP connection with each other , they are called neighbors or peers. When the neighbors just establish a connection, they exchange all the candidate BGP routes, but after the initial route exchange, the incremental route update is usually sent only when the network information changes, and is not periodically updated. Neighbor 4.4.4.4 ebgp-multihop 4 Port-Security Overview R3 re-releases the incoming A route, so R2 , R3 , and R4 form a routing loop. ( Optional ) Vlan 10 i 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. Not advertised to any peer Local 10.1.23.2 Route Tag Tag If the prefix does not match any entry in the prefix list,ccnp switch prerequisites, it will be rejected Port number 521 RIP redistribute default route The members in the VLAN are mostly based on the port assignment of the switch . The division of the VLAN is the interface division of the switch. *>i100.0.2.0/24 Port Vlans allowed and active in management domain Fa0/20 1,10,20,30 Set interface Y  100 i Switch, the switch also forwards it with an updated message to all attached LANs for which it is the designated switch. Port Security : Enabled Metric Access-list 1 permit 192.168.1.0 route-map test permit 10 Debug ip dhcp server {events | packets | linkage} Enables debugging on the DHCP server In a route-map statement, if there is no match statement, match all Data ( DATA ) Configuration and implementation None DUAL AS Ip prefix-list 1 permit 11.11.11.0/24 route-map test per 10 VLAN works on the second layer of the OSI reference model 10.1.12.2 Configuration and implementation ? The above command creates a policy-list ; the Policy-list can only contain a match statement. 0100.e01e.6012.89 Load balancing can be modified on AVG , but it is recommended to configure on all routers. Router(config) router rip Knowledge review When the GW connects to the outgoing interface of ISP2 and DOWN (that is, ISP2 hangs), then switch to ip next-hop recursive, which is ISP2. ? Next we open vtp pruning on SW3 , which is the server of VTP . Neighbor 4.4.4.4 ebgp-multihop 4 abbreviation In other words, R1 is not required to have a default route locally. Load balancing mode 16 Network 4.4.4.4 0.0.0.0 area 0 Interface fast0/0 Authentication (16 octets) 0 ? Complete the basic interface IP configuration . Add the following configuration on R2 : Show ip bgp injected-path to display 4 Router ospf 100 If the number exceeds xx , disconnect the BGP connection with the neighbor and reconnect after 2 minutes. B is RR , C and D are clients , BCD constitutes a route reflection cluster; a BGP route is advertised from C. Both R1 and R2 inject 100.0.1.0 and 100.0.2.0 into BGP using network . For details on the related fields of the BGP table, see the show section of the BGP Configuration section of this document. External route tag In the above figure, we inject OSPF routes into RIP . Traditionally, you can only set metrics on all incoming routes . However, with route-map , we can associate a defined one when configuring re-issue commands. A good route-map , in the route-map , we can create different properties or actions for different routes by creating multiple serial number statements. Switch(config-vlan)# name Classroom ? 50min is an absolute time, the countdown starts after the configuration is completed, and the countdown is always performed regardless of whether the MAC is still active. By default, only one BGP process can be started on a single router and can belong to only one AS . DUAL AS allows us to run a secondary AS under the primary AS without terminal BGP connections , thus providing a mechanism for network migration. TCAM table Run RIPv2 , the default R1 update 1.0.0.0/8 is summarized to R2 , and the automatic summary is closed on R1 , then R2 learns to 1.1.1.0/24 , and since it still starts automatic summarization, the update to R3 is 1.0.0.0. /8 . This time if R2 on ip route 1.1.1.0 255.255.255.0 null0 , then R2 is routed on the table 1.1.1.0 becomes static static routing, and the R2 is no longer to R3 updated RIP 's Neighbor 10.1.12.1 capability orf prefix-list send neighbor 10.1.12.1 prefix-list FILTER in The configuration of R3 is as follows: Therefore, in fact, the ORF is a feature of the route-filtering by means of the prefix-list . The prefix-list is pushed locally to the peer to allow the peer to perform routing prefix filtering. If it is injected through the aggregate-address command, next-hop is equal to the update source IP of the summary router . The basic interaction process is as follows (the process described below is independent of the above diagram): IBGP session principle Ip prefix-list 2 permit 100.0.2.0/24 route-map WT2 permit 10 Access-list 11 deny 192.168.1.0 Neighbor 10.1.12.1 capability orf prefix-list send neighbor 10.1.12.1 prefix-list FILTER in  open Use the match command to match a specific packet or route, and set to modify the packet or route related attributes. Index //The effect is the same as above ? Solution: The way to redistribute static summary route to avoid the sub-optimal routing and other issues Paths: (1 available, best #1, table Default-IP-Routing-Table) Not advertised to any peer Router bgp 100 R3 R1#show glbp !! Two ACLs are created above to match the routes that need to be treated differently. 3.3.3.3 ( metric 2 ) from 3.3.3.3 (3.3.3.3) or Associate route-map when route is re-published Match ip address 1 The port enters the forwarding state, and the bridge already has the designated port. Route-map test deny 10 match tag 1111 BGP neighbor Origin IGP, metric 0, localpref 100, valid, internal Originator: 1.1.1.1, Cluster list: 4.4.4.4, 3.3.3.3 Use RR Arp replies sent: 3 Forwarder 2 Notification message Ip address 10.1.25.5 255.255.255.0 The difference between set ip next-hop and set ip default next-hop is relatively simple, it is not resolved here. 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 Maximum frame: 1518+4=1522 The BGP update package is as follows. You can note that the length of the AS is 2 , which is " 300 , 100 ". Note that this is an ordered list of ASs . Ip prefix-list ABC seq 5 permit 172.0.0.0/8 ge 24 10.1.13.1 Through MED affect route choice 18 Since the AS_PATH attribute does not change within the AS (only when the route leaves the AS ), the AS inner loop has a horizontal splitting mechanism, and the route reflector actually relaxes the horizontal splitting principle. This will bring some hidden dangers to the loop. Therefore, the route reflector needs to use the following two attributes to prevent loops: Route-map cisco permit 20 match ip address 2 set metric 20 Advantages and disadvantages 20.20.20.0/24 Protocol overview Access-list 1 permit 1.1.1.0 Bgp confederation identifier 345 bgp confederation peers 64512 neighbor 4.4.4.4 remote-as 64512 EtherChannel The ARP packet of the element , then these messages correspond to an entry to save buffer usage. At the same time, only one system information will be generated. Sw(config-if)#switchport mode private-vlan promiscuous sw(config-if)#switchport private-vlan mapping 100 201,202 sw(config)#interface range fa 0/1-2 Request specific routing information: When it is necessary to know the information of a specific route or some specific routes, the request message will be sent together with the routing entry of the specific address. The device that receives the request will process the entries one by one according to the request message and form a response message. The configuration of R2 is as follows: Configuration example This is the problem, how to solve it? Very simple, on the OR2 , deploy PBR , as long as the server data from Netcom, all forced to OR1 , it is solved. 5.5.5.5 Two DNS servers belong to the same community VLAN and can communicate with each other. Ip prefix-list ABC seq 5 permit 172.0.0.0/8 le 24 The destination IP address of the route , which can be the address of the natural network segment or the subnet address or The switch sends data frames according to the discovered outbound interface. Client-identifier unique-identifier O CCIE.txt format: Next, look at RP , SW2 has two interfaces, both of which will receive BPDUs , all from SW1 , so the cost of the first two BPDUs to root is 0 , equal; the sender ID of the sender is due to the same switch, and therefore equal, less out; and then compare the two BPDU port ID , that is, SW1 on both port interface ID , we assume that the two interfaces equal priority, then the ratio of these two ports The interface ID , and finally select the root port F0/1 on SW2 .