failover peer - why pools aren't balanced

[Michael Kwok]

Hi,

I have 2 servers running in failover mode.
It has just been configured with no clients connected yet.

1. I am wondering why the pools don't balance..
2. In my environment there are around  72  x  /23  pools  (approx. 36K 
addresses), should that be ok  ?
   both servers are dual core machines with 1GB RAM each..

Thanks

Michael

-------------------------------------------------------

Here are the important bits from the secondary server:-

 allow bootp;
 authoritative;
 ddns-updates off;
 ddns-update-style ad-hoc;
 option domain-name-servers 172.16.100.1,172.16.100.2;
 failover peer "dhcp-failover" {
  secondary;
  address 10.10.80.10;
  port 520;
  peer address 10.10.80.5;
  peer port 520;
  max-response-delay 30;
  max-unacked-updates 10;
  load balance max seconds 3;
  max-lease-misbalance 15;
  max-lease-ownership 10;
  min-balance 60;
  max-balance 3600;
 }

and here are the important bits from the primary server:-

 allow bootp;
 authoritative;
 ddns-updates off;
 ddns-update-style ad-hoc;
 option domain-name-servers 172.16.100.1,172.16.100.2;
 failover peer "dhcp-failover" {
  primary;
  address 10.10.80.5;
  port 520;
  peer address 10.10.80.10;
  peer port 520;
  max-response-delay 30;
  max-unacked-updates 10;
  load balance max seconds 3;
  split 128;
  mclt 3600;
  max-lease-misbalance 15;
  max-lease-ownership 10;
  min-balance 60;
  max-balance 3600;
 }



when the 2 servers are brougt up the first time.. i see messages whcih show 
a severe imbalance

e.g.

from primary
Apr  5 10:49:22 radius-server dhcpd: pool 81b20b8 172.22.10/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 81b20b8 172.22.10/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.
Apr  5 10:49:22 radius-server dhcpd: pool 819a5e0 172.22.8/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 819a5e0 172.22.8/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.
Apr  5 10:49:22 radius-server dhcpd: pool 8182b08 172.22.6/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 8182b08 172.22.6/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.
Apr  5 10:49:22 radius-server dhcpd: pool 816b030 172.22.4/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 816b030 172.22.4/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.
Apr  5 10:49:22 radius-server dhcpd: pool 8153578 172.22.2/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 8153578 172.22.2/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.
Apr  5 10:49:22 radius-server dhcpd: pool 810c298 172.22.0/23  total 509 
free 305  backup 204  lts 50
Apr  5 10:49:22 radius-server dhcpd: pool 810c298 172.22.0/23: lts <= 
max-lease-misbalance (76), pool rebalance event skipped.

e.g. from secondary:-

Apr  5 10:50:21 linux-dell dhcpd: pool 81e56c0 172.22.20/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 81cdbe0 172.22.18/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 81b6100 172.22.16/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 819e618 172.22.14/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 8186b38 172.22.12/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 816f048 172.22.10/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 8157580 172.22.8/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 813faa8 172.22.6/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 8127fd0 172.22.4/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 8110518 172.22.2/23  total 509  free 
305  backup 204  lts -50
Apr  5 10:50:21 linux-dell dhcpd: pool 80e6608 172.22.0/23  total 509  free 
305  backup 204  lts -50