Dell C1048P Port Extender Networking Configuration Guide for the C9000 Series - Page 351

neighbor 1.1.1.1 remote-as 1 neighbor 1.1.1.1 no shutdown neighbor 4.4.4.2 remote-as 2 neighbor 4.4.4.2 dmzlink-bw neighbor 4.4.4.2 no shutdown neighbor 5.5.5.2 remote-as 2 neighbor 5.5.5.2 dmzlink-bw neighbor 5.5.5.2 no shutdown R3# interface tengigbitethernet 1/1 ip address 1.1.1.3/24 no shutdown interface fortyGigE 1/48 ip address 3.3.3.1/24 no shut router bgp 1 maximum-paths ebgp 2 bgp dmzlink-bw neighbor 1.1.1.1 remote-as 1 neighbor 1.1.1.1 no shutdown neighbor 3.3.3.2 remote-as 2 neighbor 3.3.3.2 dmzlink-bw neighbor 3.3.3.2 no shutdown R4# interface tengigbitethernet 1/1 ip address 4.4.4.2/24 no shut router bgp 2 maximum-paths ebgp 2 bgp dmzlink-bw neighbor 4.4.4.1 remote-as 1 neighbor 4.4.4.1 dmzlink-bw neighbor 4.4.4.1 no shutdown R5# interface tengigbitethernet 1/1 Ip address 5.5.5.2/24 no shut interface fortGigE 1/48 ip address 3.3.3.2/24 no shut router bgp 2 maximum-paths ebgp 2 bgp dmzlink-bw neighbor 5.5.5.1 remote-as 1 neighbor 5.5.5.1 dmzlink-bw neighbor 5.5.5.1 no shutdown neighbor 3.3.3.1 remote-as 1 neighbor 3.3.3.1 dmzlink-bw Dynamic Re-calculation of Link Bankwidth The Link cost associated with a port channel interface (LAG) changes whenever a member is added or deleted. Continuous link flapping results in the re-calculation of the link costs. This behaviour also causes unnecessary processing overhead on the device as it advertises these changed link costs to its peers and updates its RTM when ever there is a change in the member status. To avoid the re-calculation of Link costs for continuous link flaps, the updated link cost is re-calculated using a timer. This timer is activated every five minutes to check if there is any change in the link cost associated with the EBGP neighbors (directly connected). Equal Cost Multi-Path (ECMP) 351