发布时间: 2017-07-06 | 浏览次数: 1868 | 下载次数: 23 | 作者: shiliang_guo | 文档编号: EKB1000725883
接入管理地址:192.168.2.250 745a-aad2-6485 ; 核心管理地址:192.168.2.1 a8ca-7ba5-6ea0 。
故障现象为部分监控点无法ping通网关地址及管理平面地址。
1、设备配置错误或跳纤错误,导致环路,通过在接入和核心 display stp brief,查看所有接口均为FORWARDING 状态,已将核心STP优先级设置为0;
2、查看接口状态 display interface brief 也没有异常,故排除打环可能;
3、配置流统策略,查看各个监控点和核心之间的流量,应用在与接入互联接口上,
acl number 4444
rule 5 permit l2-protocol arp destination-mac ffff-ffff-ffff source-mac a8ca-7ba5-6ea0
[Quidway]display traffic policy statistics interface GigabitEthernet 0/0/26 outbound verbose rule-base
Interface: GigabitEthernet0/0/26
Traffic policy inbound: 4444
Rule number: 2
Current status: success
Statistics interval: 300
---------------------------------------------------------------------
Classifier: 4444 operator and
Behavior: 4444
Board : 0
rule 5 permit l2-protocol arp destination-mac ffff-ffff-ffff source-mac a8ca-7ba5-6ea0
---------------------------------------------------------------------
Passed | Packets: 980
| Bytes: -
| Rate(pps): 0
| Rate(bps): -
---------------------------------------------------------------------
Dropped | Packets: 0
| Bytes: -
| Rate(pps): 0
| Rate(bps): -
---------------------------------------------------------------------
| Rate(pps): 0
| Rate(bps): -
以上可以看到两个设备之间ARP流量正常,无丢包;
4、<Quidway>display arp all | in total查看ARP表,发现每次都有变化;
5、查看debug packet信息,debugging arp packet interface Vlanif 12 ip 192.168.2.250,无异常;
6、查看debug error信息,debugging arp error,无异常。
通过查看 debugging arp process interface Vlanif 12 ,发现ARP超规格。
<Quidway>
Jun 24 2016 16:44:57.0.1 Quidway ARP/7/arp_info:
ETHARP_ArpInput() Update an ARP entry, IP = 0xc0a8025c.
<Quidway>
Jun 24 2016 16:44:57.730.1 Quidway ARP/7/arp_info:
ETHARP_ArpInput() Update an ARP entry, IP = 0xc0a80272.
<Quidway>
Jun 24 2016 16:44:55.990.1 Quidway ARP/7/arp_process:The arp process, IP: 192.168.2.250, the process function: Insert ARP with ARP Limit , the information: ARP reach the max limit number.
<Quidway>
Jun 24 2016 16:44:58.180.1 Quidway ARP/7/arp_info:
ETHARP_ArpInput() Update an ARP entry, IP = 0xc0a80241.
经过核实,S5700-28P-PWR-LI-AC的ARP表规则只支持到256,现网有300多台摄像头,所以部分业务不通。
1、更换核心交换机、选择ARP规格表较大的设备;
LI-精简型、SI-标准型、EI增强型,性能依次增大。
2、多台核心设备,每台起VLAN地址,设置为相应网段内监控头的网关。