我的Juniper Router arp不工作,清除MAC后就可以工作了

网络工程 路由器 杜松 瞻博网络
2022-02-15 18:38:48

在我的 MX Juniper 路由器设备中,有 IP16.213.40.1地址:

{master}                                                                        
admin@juniperMX> show arp no-resolve | match 16.213.40.1                      
0c:c4:7a:e2:da:3d 16.213.40.1   ae16.48                  none 

但我无法ping通16.213.40.1,并且在我删除了之后arp

clear arp hostname 16.213.40.1

然后我从那里的路由器 ping 地址 16.213.40.1 获得成功。现在的MAC还是一样的0c:c4:7a:e2:da:3d

那么,我的路由器arp进度问题是什么?如何检查问题?

命令 ( show system statistics arp) 获取以下信息:

admin@juniper> show system statistics arp                                     
arp:                                                                            
     55547805 datagrams received                                            
     15585252 ARP requests received                                         
     5672166 ARP replies received                                           
     1359509150 resolution request  received                                
     0 unrestricted proxy requests                                          
     0 restricted proxy requests                                            
     0 received proxy requests                                              
     0 unrestricted proxy requests not proxied                              
     0 restricted proxy requests not proxied                                
     0 datagrams with bogus interface                                       
     0 datagrams with incorrect length                                      
     0 datagrams for non-IP protocol                                        
     0 datagrams with unsupported op code                                   
     0 datagrams with bad protocol address length                           
     0 datagrams with bad hardware address length                           
     0 datagrams with multicast source address                              
     1532015 datagrams with multicast target address                        
     378 datagrams with my own hardware address                             
     370965 datagrams for an address not on the interface                   
     794 datagrams with a broadcast source address                          
     1 datagrams with source address duplicate to mine                      
     32382640 datagrams which were not for me                               
     719 packets discarded waiting for resolution                           
     21 packets sent after waiting for resolution                           
     2508270833 ARP requests sent                                           
     15585252 ARP replies sent                                              
     0 requests for memory denied                                           
     0 requests dropped on entry                                            
     0 requests dropped during retry                                        
     0 requests dropped due to interface deletion                           
     0 requests on unnumbered interfaces                                    
     0 new requests on unnumbered interfaces                                
     0 replies for from unnumbered interfaces                               
     0 requests on unnumbered interface with non-subnetted donor            
     0 replies from unnumbered interface with non-subnetted donor           
     0 arp packets rejected as family is configured with deny arp           
     0 arp response packets are rejected on mace icl interface              
     3594 arp replies are rejected as source and destination is same        
     0 arp probe for proxy address reachable from the incoming interface    
     0 arp request discarded for vrrp source address                        
     0 self arp request packet received on irb interface                    
     0 proxy arp request discarded as source ip is a proxy target           
     0 arp packets are dropped as nexthop allocation failed                 
     0 arp packets received from peer vrrp rotuer and discarded             
     0 arp packets are rejected as target ip arp resolve is in progress     
     0 grat arp packets are ignored as mac address is not changed           
     0 arp packets are dropped from peer vrrp                               
     0 arp packets are dropped as driver call failed                        
     0 arp packets are dropped as source is not validated 
1个回答

根据您提供的一些细节,有几种可能性:

  1. 由于某些配置,MX 不会尝试 ping 目标 - 我们不知道它的配置。
  2. MX 确实对目标进行了 ping 操作,但除非先前已发出 ARP 请求,否则它不会回复 - 我们对目标一无所知。
  3. MX 和目标之间的某些东西过滤了回显请求或回复 - 我们对您的网络一无所知。

您要么需要向我们提供有关您的方案的更多信息 - 请参阅https://networkengineering.stackexchange.com/help/how-to-ask了解更多详细信息 - 或使用数据包捕获来了解发生了什么。