需求:
由于现行网络里,需要在dhcp地址池内绑定一个mac地址,已达到地址固定的效果;在实施中发现无论如何操作,目标mac都无法获取到手动绑定的那个地址.
背景:
设备及固件:
ERX-310-a3-1f-81#show ver
Juniper Edge Routing Switch ERX-310
Copyright (c) 1999-2008 Juniper Networks, Inc. All rights reserved.
System Release: erx310_8-2-4p0-16.rel
Version: 8.2.4 patch-0.16 [BuildId 11167] (July 2, 2009 11:28)
System running for: 197 days, 19 hours, 16 minutes, 25 seconds
(since TUE SEP 10 2013 12:18:16 beijing)
slot state type admin spare running release slot uptime
---- ------ ---------- ------- ----- --------------------- ---------------
0 online SRP310-10G enabled --- erx310_8-2-4p0-16.rel 197d19h:15m:53s
1 online GE-HDE-8 enabled --- erx310_8-2-4p0-16.rel 197d19h:15m:27s
2 --- --- --- --- --- ---
配置:
ip dhcp-local pool USE1
network 10.20.20.0 255.255.254.0
dns-server 172.16.12.1 202.102.199.68
default-router 10.20.20.1
lease 0 0 30
reserve 10.20.20.200 0000.xxxx.57de
!
ip dhcp-local excluded-address 10.20.20.1
ip dhcp-local excluded-address 10.20.20.200
结果:
reserve 10.20.20.200 0000.xxxx.57de
*以上命令中的目标mac一直无法获取到绑定的10.20.20.200地址
问题原因及解决:
ip dhcp-local pool USE1
network 10.20.20.0 255.255.254.0
dns-server 172.16.12.1 202.102.199.68
default-router 10.20.20.1
---此处为问题原因: 网关设置为pool内最后一个网段的地址如ip:10.20.21.1,则问题解决.
lease 0 0 30
reserve 10.20.20.200 0000.xxxx.57de
!
ip dhcp-local excluded-address 10.20.20.1
ip dhcp-local excluded-address 10.20.20.200
