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Day 3 Encor - Coggle Diagram
Day 3 Encor
BGP
routing table will compare AD(administrrative distance) with other routing protocol
example of defautl AD
OSPF 110
Internale EIGRP 90, external EIGRP 170
EBGP =20, IBGP=200
static route =1
lowest AD
AS number type
The Public AS numbers range from 1 to 64511 and the Private AS numbers range from 64512 to 65535.
attribute
origin
2 type
IGP
Using BGP network command to advertised
represent by letter i in last column of show ip bgp
Incomplete
due to redistribution into BGP
represented by question mark in show ip bgp (at last column)
IGP is prefered than incomplete
NAT
private IP range
10.0.0.0 — 10.255.255.255; 172.16.0.0 — 172.31.255.255; 192.168.0.0 — 192.168.255.255
.type of NAT
static NAt
1 privte IP translate to 1 public IP
dynamic NAT
A range of private IP will be translated to a range of public IP
PAT (port address translation)
translate many private IP to 1 sing;e public IP
NAT virtual interrface
step. 1 lookup outing tableg
step 2. Do NAt
step 3: lookup routing table
FHRP
type
HSRP
cisco proprietray
election of active router
default is based on highest IP of the router
can be overriden by HSRP priority
Hihgher priority is prefered
default is 100
VRRP
standard
GLBP
cisco proprietary
VPN
Ipsec
IKEv2 feature
can support EAP
provide AntiDoS
help to reduce the number of SA required per tunnel
SA
define hashing
type
SHA
MD5
encyrption