ccnp route anki
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- 2857 Reviews
IGRP
Load balancing methods
Summary of 192.168.0.0/16 on R2
learner
Ip policy route-map PBR
We restore the experimental environment to the basic configuration: BGP neighbor relationships are as follows
OK , now go back to the main class network number 172.16.0.0/16 , then we will go out and look at the picture. 172.0.0.0/8 actually shifts the mask of this class B address to the left by 8 bits , so that the network number obtained is actually a large network number including 172.16.0.0/16 . Call it supernet .
Network
Finally, look at DP , which is also relatively simple as shown. We take SW3 and SW4 between the segment , for example, due SW3 and SW4 will have BPDU , and SW3 issued SW4 of BPDU obviously superior to SW4 this interface to send generated from its own BPDU , so the final SW4 interfaces win.
SW1(config-if)# switchport nonegotiate
Bgp default local-preference 500 // Modify the default lp value of the route originating locally
Ip address 100.0.2.1 255.255.255.0
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 .
Default-information originate
(2) Declare the loop port 1.1.1.1224
Route summary 23
BPDU sending bridge ID
Send BPDU
BGP based policy accounting on input is disabled BGP based policy accounting on output is disabled Hardware idb is FastEthernet0/0
Show ip dhcp server statistics Shows count information about statistics and messages sent and received
Router ospf 1
<0-4294967295> 32-bit tag value
Comparative principle
Match tag matches based on the tag of the route
Network
Y
Precautions:
10.1.23.2
Static Routing Configuration
// EBGP neighbor
Reset BGP connection
!
Ip route 2.2.2.0 255.255.255.0 192.168.13.1
For dynamic address allocation
By default , the rate on the DAI untrusted interface is 15 pps , while the trusted interface is unlimited.
Using the previous two commands, the aging time does not affect the static address entries that are statically configured. Of course, the sticky entries are not affected. These entries are never aging, but if you match the above For a command, the manually configured security address entry is also limited by the aging time.
Ip default-gateway 192.168.100.254 Interface fast0/0
3.3.3.3
Set ip next-hop ip1 Set ip next-hop ip2
An escape character that is used to convert the control character immediately following it to a normal character
Bgp dampening ?
*>i
100.1.1.0/24 . At the same time, this re-release becomes the summary route of OSPF . Even if two ASBRs are returned , because there is a static summary route locally, the summary route of OSPF is directly ignored , and sub-optimal is not generated. Path, this route will not be re-released back to RIP and cause other problems.
2 : Reponse message, send all or part of its routing information, one
Loopback Loopback interface
Protocol overview
LocPrf
After the MAC sublayer of A is added to the MAC address and the LENGTH field, it is sent to the data link.
TYPE : 1-open ; 2-update ; 3-Notification ; 4-keepalive
Switch(config)# vtp mode {server | client | transparent}
Ip dhcp pool vlan10 network 192.168.10.0 /24
Beta
External BGP
100.0.1.0 the BGP route, preferably up to R5 .
No synchronization no auto-summary
192.168.1.0/24
STP (PVST)
Router(config-router)# distance eigrp internal-distance external-distance
Ip dhcp relay information trust-all
*>i100.0.2.0/24
NEXT-HOP
Interface f0/3
Next Hop
The ethernet , fast ethernet , and serial interfaces of the Cisco 1600 , 1700 , 2500 , and 2600 series routers use fast switching by default .
Set next-hop specifies the address of the next hop , specifying the next hop of BGP .
First, in order to avoid the suboptimal path problem, we use the distribution list in the in direction on R2 and R3 to filter out 1.1.1.0 .
Peer using Route-map in the case of ) :
Load balancing
At the same time, the same OSPF route is learned from both processes and is used on a first come, first served basis. Therefore, if R3 first learns the route from R1 , it will naturally ignore the one that R2 re-releases. However, if the neighbor relationship between R1 and R3 is already obtained in R3
OSPF and RIP
RouterID : 172.16.8.1
<1-99> Community list number (standard)
10.1.23.2
official version
* 11.11.11.0/24 0.0.0.0
Ip default-network 172.16.3.0
Experimental verification ( IBGP equivalent load balancing)
Switch(config-if)# spanning-tree [ vlan vlan-id ] cost cost
Select the route with the smallest neighbor IP address ( the address of the neighbor in the neighbor configuration of BGP ,ccnp route anki, that is, the update source IP of the neighbor )
Route 2 : the AS_PATH : 500 the MED : 100 Internal RouterID : 172.16.8.1
NEXT-HOP
Precautions:
Consider the case where R2 is RR , and R4 and R5 respectively declare loop
*>i
Default-information originate
Length of the suboption type
!
Access-list 1 permit 10.1.1.0
On R1 , default information originate is also formed, and R2 and R3 will learn the default route of 0/0 . This command is for RIP
10.1.13.1
Route filtering or execution strategy during redistribution
Y
OSPF and EIGRP re-release
*>i100.0.1.0/24
When both the primary and secondary addresses are present, the RIPV1 router will use the mask of the secondary address of the interface that receives the route update packet locally (this has been verified in the above experiment).
Knowledge review
FastEthernet0/0 - Group 1 State is Active
?
distribute-list
The packet contains a maximum of 25 routing entries.
R3 associates the route-map with the redistribution of the direct route 3.3.3.3/32 , tag#11 , and the route is passed to R2 . On R2 , the redistribution of RIP to OSPF is deployed. After the external route of 3.3.3.3 is injected into OSPF , the tag value is carried by default.
Create a VLAN
Improve
VTP version running VTP Domain Name VTP Pruning Mode VTP Traps Generation
no ip dhcp snooping information option
This attribute may not be supported. Unrecognized BGP processes ignore update messages containing this attribute and are not passed to other BGP neighbors.
1,10,20,30 !! In the case of turning off VTP prunnig , trunk defaults to traffic for all VLANs , which is in SW2
?
Interface loopback0
Next Hop
Therefore, you need to use the MAC address reduction scheme.
Bind a mac address to an interface
First ensure that R1 , R3 to 10.1.1.0 are routed, and test on R2 :
Length
Ip dhcp snooping
Neighbor 10.1.13.1 remote-as 100
Configure an interface as a passive interface:
Not advertised to any peer
If the output is too much, you can use the pipe character: sh cef interface s0/0 policy-statistics input | in 30
To verify which outbound interface is used for a particular traffic in destination-based load balancing, use
At this point , the route 1.1.1.0 is seen on R3 , which contains the next hop attribute, and the previous one.
If an external route carrying a tag is advertised on R1 and OSPF is redeployed to EIGRP on R2 , then the route is advertised.
Route Control Overview 77
R1(config-route-map)# match ip address prefix-list list1
Try to establish a TCP connection
Route matching tool
Verify BGP routing rules and test BGP related policy tools.
?
Ip address 10.1.13.3 255.255.255.0
Not used (set to all 0s )
Ip route 3.3.3.0 255.255.255.0 serial 0/1
ARP ACLs take precedence over DHCP snooping database entries. After you specified the global command ip arp inspection filter
Simplify the synchronization of VLAN information bases in large campus networks (same VTP management domain)
Set ip next-hop 22.2.2.2
Manually configure a secure address on the port-security interface.
Network
If there are multiple routes from the same neighboring AS and multiple paths are available through Maximum-paths , all routes with the same cost are added to Loc-RIB.
1
Length of the suboption type
The next hop of the path is unreachable.
SW1#show ip dhcp snooping binding
Conduct a three-layer forwarding decision. The CEF table maintains core information extracted from the routing table, which is used to perform forwarding decisions on received messages, including IP prefixes, recursive next hop addresses, and outbound interfaces. An important feature of the CEF table is its ability to make immediate decisions about recursive prefixes.
Match community 11
Then in the BGP process, network 0.0.0.0 can inject this default route into the BGP process . The default route introduced in BGP by this method will be delivered to all BGP neighbors.
LocPrf
The TCN BPDU contains three fields, which are identical to the first three fields except the type field of the configuration BPDU .
The default keyword has a lower priority than the detail route.
The route obtained by the BGP speaker from EBGP will be advertised to all its BGP neighbors (including EBGP and IBGP ).
PC1 to deceive PC2 , the package made by the tools, such as anysend like, send a ARP request broadcast, the ARP data of the Ethernet frame header, source MAC of PC1 of the MAC , the purpose of MAC full F. , The contents of that key ARP protocol packets Wen ( ARP body ), that is, after the contents of the data frame Ethernet frame header, this is the ARP real content, which may encompass the main elements are: the sender mac , sender IP , the recipient MAC and recipient IP . PC1 that issued ARP data frame, SENDER MAC for their MAC addresses, but SenderIP gateway IP i.e.192.168.0.