ccnp tshoot 300-135 book

ccnp tshoot 300-135 book

CAM and TCAM Vlans in spanning tree forwarding state and not pruned Network 10.1.25.0 0.0.0.255 area 0 Ip dhcp snooping vlan 10 Interface fast0/1 A multiply character can be applied to a single character or multiple characters. If applied to multiple characters, put the string in (). CISCO data forwarding mode 13 Known via "bgp 200", distance 20, metric 0 Tag 13, type external 1 8 The IP header is 20 bytes, the ICMP header is 8 bytes, and the ICMP data payload is 1472 bytes, which is exactly 1500 bytes. Therefore, on the CISCO IOS device, the size followed by the ping refers to the entire size of the outgoing IP packet. By default , the rate on the DAI untrusted interface is 15 pps , while the trusted interface is unlimited. Set as-path prepend 6666 Lease(sec) Type Configuration view and verification 2 : RIP-2 . If R2 on ip route 1.1.1.0 255.255.255.0 null0 , this time there is no routing table OSPF of 1.1.1.0 routing the unsuccessful thus re-release, so R3 can not learn the 1.1.1.0/24 route; Neighbor 10.1.23.2 route-map setCommu in Local origin Router ospf 1 The router goes to update the route of 3.0.0.0 Create a secondary VLAN : 192.168.67.6 In the full-duplex mode, the transceiver can be directly sent and received without pre-determining the busy state of the link. ! IP policy routing is disabled MD5 digest : 0x49 0x3C 0x1F 0x79 0x15 0x00 0xC7 0xAE 0x0E 0xDC 0xDD 0xEF 0x93 0xA5 0xB6 0x26 Both of the above commands can be used to adjust the management distance of the routing protocol. The first command, distance ad ip-src , can adjust the management distance for a specific routing update source and a specific routing prefix. For example, I will use an OSPF. Some routes sent to me by the neighbor, the AD value is adjusted to 130 . Redirect time 600 sec,ccnp tshoot 300-135 book, forwarder time-out 14400 sec Preemption disabled Network 100.0.2.0 mask 255.255.255.0 5.5.5.5 Example 2 of ip community-list (logical relationship): R2 will use the primary address and the secondary address for validate-update-source , so R2 can learn 2.2.2.0 and 3.3.3.0 routes. RC and RA are separated by RB . In this case, EBGP runs through a non- BGP router by using the configurable " multi-hop EBGP" feature . In other words, RB can not support BGP , and the configuration is as follows ( RA ) Configuration Example Trunking 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. Note that the BGP created by R3 uses the AS number of 64512 , which is the federate member AS number instead of the federated AS number. aggregate-address 192.168.0.0 255.255.0.0 as-set after, R1 can only learn to 2.0 , the summary route are rejected, the reason is 1.0 carries no-adver of Community Community , when the summary route plus the as-set keyword after Will inherit its community , so the summary route also carries no-adver , this time Ip route 192.168.1.0 255.255.255.0 172.16.12.1 In the transport AS , establish IBGP full interconnection, that is, R3 and R4 , R4 and R5 , R3 and R5 are established. Originator_ID Cluster_list Weight Type echo protocol ipIcmpEcho 10.1.1.2 source-ipaddr 10.1.1.1 frequency 10 However, for sticky entries, the aging time is never activated and it will not age. The number of messages received by MsgRcvd from neighbors Network 192.168.24.2 0.0.0.0 area 0 Canonical Format Indicator , which is 1 bit long, indicates whether the MAC address is a classic format. The configured static network path is redistributed into OSPF . In this way, when the intranet user needs to access the Netcom resources, because of the details of the network access, go to OR1 . To access other resources, take the default route to OR2 . description 802.3 does not recognize the upper layer protocol and must be used with a dedicated LAN ( such as IPX) . Neighbor maximum-prefix xx Another way is to use ARP ACL : ? Request the entire routing table: The request message contains a single route with an address family identifier field of 0 (address 0.0.0.0 ) and a metric of 16. The device receiving the request will unicast it back to the requesting address. The entire routing table. It does not modify the original data frames, the processing efficiency than 802.1Q higher After receiving this poisoning message, B erases 10.4.0.0 from the routing table, but it still exists in the rip database , the status is possible down , the garbage collection time ( Garbage colletion CISCO default 60S ), the route is from B. The database is erased. RFC1724 Within the federation, both R3 and R4 belong to AS64512 . For R4 ( AS64512 ), R5 belongs to AS64513 , but for the federal outside, R3R4R4 is AS345 , and external extremities do not know that AS64512 and 64513 exist. Arp spoofing solution The configuration of R2 is as follows: Community number in aa:nn format Add to the existing community Comparative principle IP policy routing is disabled It is recommended to configure a wild VLAN as Native vlan. Atom character example: C * i Switch(config-if)# ip address 192.168.20.254 255.255.255.0 switchport trunk encapsulation dot1q switchport mode trunk So now, we add the following in the configuration of R2 : SW1 (config-if) # glbp 1 priority 120 !! Priority defaults 100 , the highest priority becomes the AVG , under equal priority, the maximum IP interface becomes the AVG . Default " AVG preemption" is off The cost of the route. ? //trunk package protocol is dot1q BGP table on R2 : After an ARP ACL , if ARP packets are denyed by the ARP ACL , these packets are directly discarded, even in DHCP snooping. Experimental verification Match ip address 10.1.12.2 Basic configuration of Layer 3 switch Start a TCP connection. Prepare enough resources when BGP is enabled BGP The 802.1Q Tag contains 4 fields, which have the following meanings: UDLD mode of operation The Auto interface is willing to be a trunk . If the adjacency interface is set to trunk or desirable , the interface becomes a trunk. 100 46-1500 bytes; set mtu xxxx under the interface , which means this, and generally does not allow * 172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks S* 172.16.0.0/16 [1/0] via 172.16.3.0 200 i match. As long as the community contains 100:11 or no-export The following figure is the sender using the route-fresh message to push the prefix-list Under normal circumstances, Rl is possible to ping through 3.3.3.3 , but if R2 f0 / 0 port agent arp turned off, then it ping nowhere outlet associated with the use of static routing, the router will route to the destination address that is the local chain Road, so send arp request for mac of 3.3.3.3 , and Ip route 3.3.3.0 255.255.255.0 serial 0/1 Match ip address prefix-list Enhanced Interior Gateway Routing Protocol (EIGRP) Open Shortest Path First (OSPF) Interface loopback0 On R2 and R3 , there are two OSPF processes. If shown, one is OSPF1 and the other is OSPF2 . Note that this dual process is mainly implemented on the two ASBRs R2 and R3 . Client-identifier unique-identifier Router bgp 345 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. 1 i First, let's get a glimpse of route-map . Looking at the figure above, we redistribute OSPF routes into RIP on R2 . As mentioned above, when re-publishing, you can use the metric keyword to set the metric after the route is re-advertised into RIP . Set to 1 here . The immediate result is that all OSPF routes injected into RIP have a metric of 1 . So what if I want to make some flexibility adjustments? For example, I hope that after the route is injected into RIP , the metric of the 192.168.1.0 route is 1 and the metric of 2.0 is 2 . Traditional redistribution is impossible.