求助：2621XM的静态NAT出现问题

CLeon

按照正常情况配置了路由器，配置完成之后发现静态映射的一台服务器在进行数据传输时总是出现丢包的现象，表现为：从公网ping 该服务器的外部地址总是有部分超时（该服务器在别处测试一切正常），从内部Ping 其内部地址没有任何问题，请各位高人多多帮忙啊！

另有一个问题，ip pim bidir-enable这条命令达到的效果小弟一直不明白，望赐教。

配置清单：
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname 2621XM
!
enable secret 5 $1$6O$4n37RNaDWhwRCgM25sL0
!
ip subnet-zero
!
!
no ip domain-lookup
!
!
!
!
interface FastEthernet0/0
ip address 211.10.16.114 255.255.255.252
ip nat outside
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.3.1 255.255.255.0
ip nat inside
speed auto
full-duplex
!


ip nat pool temp 211.99.16.128 211.9.16.128 netmask 255.255.255.252
ip nat inside source list 1 pool temp overload
ip nat inside source static 192.168.3.14 211.99.16.131
ip classless
ip route 0.0.0.0 0.0.0.0 211.10.16.113
no ip http server
ip pim bidir-enable
!
!
access-list 1 permit 192.168.3.0 0.0.0.255

!
line con 0
line aux 0
line vty 0 4
logging synchronous
login
!
!
end


sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-I-M), Version 12.2(T5,  RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Fri 21-Jun-02 08:50 by ccai
Image text-base: 0x80008074, data-base: 0x80A2BD40

ROM: System Bootstrap, Version 12.2(7r) [cmong 7r], RELEASE SOFTWARE (fc1)

System image file is "flash:C2600-i-mz.122-8.t5.bin"

cisco 2621XM (MPC860P) processor (revision 0x100) with 60416K/5120K bytes of mem
ory.
Processor board ID JPE082510HG (2367941390)
M860 processor: part number 0, mask 32
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)

Configuration register is 0x2102

东方补白

配置应该没什么问题，看看是不是线缆和接口的原因。

CLeon

回楼上的，我已经将 物理线路测试过了，没有任何问题。
方法是用笔记本直接连，然后ping内网和外网
而且出现此问题是只有在nat的ip地址上才有的问题，其他的ip都可以正常运行