Di Posting Oleh : Simple Learning
Kategori : BGP Core Technologies Routing
Prerequisites: CCNP level skills.
Topology
Configure R1 and R2 should apply the route dampening for prefixes 40.x.x.x according to the following:
- Max-Suppres=50 minutes
- Suppress=2000 points
- Reuse=800 points
- Half-Time=10 minutes
- Max-Suppres=90 minutes
- Suppress=2500 points
- Reuse=700 points
- Half-Time=20 minutes
Task 1
Configure R1 and R2 should apply the route dampening for prefixes 40.x.x.x according to the following:
- Max-Suppres=50 minutes
- Suppress=3000 points
- Reuse=800 points
- Half-Time=15 minutes
Prefixes 44.x.x.x should use the following dampening policy:
- Max-Suppres=90 minutes
- Suppress=2500 points
- Reuse=700 points
- Half-Time=20 minutes
!
ip prefix-list NET_40 seq 5 permit 40.0.0.0/8 le 32
!
ip prefix-list NET_44 seq 5 permit 44.0.0.0/8 le 32
!
!
ip prefix-list NET_44 seq 5 permit 44.0.0.0/8 le 32
!
route-map DAMPEN permit 10
match ip address prefix-list NET_40
set dampening 15 800 3000 50
!
route-map DAMPEN permit 20
match ip address prefix-list NET_44
set dampening 20 700 2500 90
!
router bgp 123
no synchronization
bgp router-id 172.16.101.1
bgp log-neighbor-changes
bgp dampening route-map DAMPEN
network 172.16.101.0 mask 255.255.255.0
neighbor 10.1.13.3 remote-as 123
neighbor 10.1.14.4 remote-as 40
no auto-summary
match ip address prefix-list NET_40
set dampening 15 800 3000 50
!
route-map DAMPEN permit 20
match ip address prefix-list NET_44
set dampening 20 700 2500 90
!
router bgp 123
no synchronization
bgp router-id 172.16.101.1
bgp log-neighbor-changes
bgp dampening route-map DAMPEN
network 172.16.101.0 mask 255.255.255.0
neighbor 10.1.13.3 remote-as 123
neighbor 10.1.14.4 remote-as 40
no auto-summary
!
Verification:
Pic. 2 - R1 Dampening Policy.
!
ip prefix-list NET_40 seq 5 permit 40.0.0.0/8 le 32
!
ip prefix-list NET_44 seq 5 permit 44.0.0.0/8 le 32
!
!
ip prefix-list NET_44 seq 5 permit 44.0.0.0/8 le 32
!
route-map DAMPEN permit 10
match ip address prefix-list NET_40
set dampening 15 800 3000 50
!
route-map DAMPEN permit 20
match ip address prefix-list NET_44
set dampening 20 700 2500 90
!
router bgp 123
no synchronization
bgp router-id 172.16.102.2
bgp log-neighbor-changes
bgp dampening route-map DAMPEN
network 172.16.102.0 mask 255.255.255.0
neighbor 10.1.23.3 remote-as 123
neighbor 10.1.23.3 next-hop-self
neighbor 10.1.24.4 remote-as 40
no auto-summary
match ip address prefix-list NET_40
set dampening 15 800 3000 50
!
route-map DAMPEN permit 20
match ip address prefix-list NET_44
set dampening 20 700 2500 90
!
router bgp 123
no synchronization
bgp router-id 172.16.102.2
bgp log-neighbor-changes
bgp dampening route-map DAMPEN
network 172.16.102.0 mask 255.255.255.0
neighbor 10.1.23.3 remote-as 123
neighbor 10.1.23.3 next-hop-self
neighbor 10.1.24.4 remote-as 40
no auto-summary
!
Verification:
Pic. 2 - R2 Dampening Policy.
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