新装linux系统不能ping通网关，可以ping通同网段的其他机器

新装linux系统不能ping通网关，可以ping通同网段的其他机器
比如10.148.36.145 可以ping通10.148.36.141 不能ping通10.148.36.1

Bcast:10.148.39.255 这个比较怪异，为什么不是10.148.36.255  




路由设置
osssvr:/etc/sysconfig/network # netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
192.168.128.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
10.148.36.0 0.0.0.0 255.255.252.0 U 0 0 0 eth5
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth2
127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo
0.0.0.0 10.148.36.1 0.0.0.0 UG 0 0 0 eth5

IP设置
osssvr:/etc/sysconfig/network # cat ifcfg-eth-id-54:89:98:3e:55:98
BOOTPROTO='static'
BROADCAST=''
ETHTOOL_OPTIONS=''
IPADDR='10.148.36.145/22'
MTU=''
NAME='NetXtreme BCM5715 Gigabit Ethernet'
NETWORK=''
REMOTE_IPADDR=''
STARTMODE='auto'
USERCONTROL='no'


端口信息

eth5 Link encap:Ethernet HWaddr 54:89:98:3E:55:98
  inet addr:10.148.36.145 Bcast:10.148.39.255 Mask:255.255.252.0
  UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
  RX packets:10436 errors:0 dropped:0 overruns:0 frame:0
  TX packets:476 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000
  RX bytes:806153 (787.2 Kb) TX bytes:97804 (95.5 Kb)
  Interrupt:98


重启的信息
  eth5 device: Broadcom Corporation NetXtreme BCM5715 Gigabit Ethernet (rev a3)
  eth5 configuration: eth-id-54:89:98:3e:55:98
  eth5 IP address: 10.148.36.145/22
Checking for network time protocol daemon (NTPD): unused
  eth5 done

BOOTPROTO='static'
BROADCAST='' #这个怎么不设置？
ETHTOOL_OPTIONS=''
IPADDR='10.148.36.145/22' #应该是一个ip地址，为什么是一个网段？
MTU='' #这个不设置去除
NAME='NetXtreme BCM5715 Gigabit Ethernet'
NETWORK='' #这个怎么不填？
REMOTE_IPADDR=''
STARTMODE='auto'
USERCONTROL='no'