Two DHCP NICs on 2008 R2 - Dual Default Routes
have virtual server configured 2 nics. both nics dhcp enabled. microsoft dhcp server in use.
nic1 on 10.100.1.x/23 subnet. dhcp router option defined 10.100.1.1
nic 2 on 10.101.1.x/23 subnet. dhcp router on network not defined.
when ipconfig on server:
windows ip configurationethernet adapter data1:
connection-specific dns suffix . : domain.local
ipv4 address. . . . . . . . . . . : 10.100.1.166
subnet mask . . . . . . . . . . . : 255.255.254.0
default gateway . . . . . . . . . : 10.100.1.1
ethernet adapter data2:
connection-specific dns suffix . : domain.local
ipv4 address. . . . . . . . . . . : 10.101.1.175
subnet mask . . . . . . . . . . . : 255.255.254.0
default gateway . . . . . . . . . : 10.100.1.1
data2 interface not have default gateway assigned manually , mentioned dhcp scope not have router option defined (neither server options). seems interface data2 taking data1's default gateway configuration.
when route print, this:
ipv4 route table===========================================================================
active routes:
network destination netmask gateway interface metric
0.0.0.0 0.0.0.0 10.100.1.1 10.101.1.166 266
0.0.0.0 0.0.0.0 10.100.1.1 10.100.1.175 10
why there 2 default routes? default gateway on dhcp scope no router option coming from? route metric 266 comfing from?
hi,
i recommend double check dhcp server, both server options , scope options.
default gateway configured in option “003 router”.
Windows Server > Network Infrastructure Servers
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