测试RTA与RTC的连通性 RTC@8d9daa768461:/# ping 10.1.1.1 -c 1PING10.1.1.1(10.1.1.1):56databytes64bytesfrom10.1.1.1: icmp_seq=0ttl=63time=0.134ms ---10.1.1.1ping statistics ---1packets transmitted,1packets received,0% packet lossround-tripmin/avg/max/stddev =0.134/0.134/0.134/0.000ms R...
默认情况下,两个EBGP之间报文TTL为1 配置EBGP multihop 66 则报文TTL变成66 再配置ttl-security hops 11 ,则报文TTL变成255 show ,两个配置都在,但是只有第二个生效。 undo ttl-security hops , 则报文TTL变成66
TTL取值范围通常为1-255,默认值为1。具体的取值范围可以根据网络环境和需求进行配置。较小的TTL值可以提高对等体之间的安全性,限制BGP控制报文的传输跳数,但可能增加网络的管理和维护成本。较大的TTL值可以增加BGP控制报文的传输跳数,但可能增加网络的灵活性和复杂性。 2.连接数限制:连接数限制是指EBGP对等体之间...
后面表示ttl数值，1就是中间不能隔路由器，必须是物理直连。这个多跳参数，根据需求设定。比如，现在是2跳，必须保持现在的状态，那就设2跳，一旦拓扑或路由变动，邻居就down，就可以发现；如果希望邻居稳定，那就多设几跳，这样可以在一定范围内变动。而做实验，就是为了看效果，直接不打数字，缺省255...
bgp多跳设置的是open包的ttl，1代表1跳，也就是必须直连才能建neighbor。（记得是这样的）设为255的意思是只要能建neighbor就建，不论路径情况。你可以想，设置这个参数的目的，它其实是为了控制bgp。毕竟bgp网络不是有一个人或组织来管理，有很多的不确定因素。如果open包ttl默认255，不加限制，那么...
by default EBGP messages are sent with a TTL of 1.The neighbor ebgp-multihop statement changes the default TTL in EBGP messages to specified neighbors. hostname R1 interface Loopback0 ip address 1.1.1.1 255.255.255.0 ! interface FastEthernet0/0 ...
BGP TTL is default 1. Do you have a topology? I have a couple of questions: 1. Is this working and you're just wondering how it's working? 2. Is it not working and you're trying to fix it? If it's 1, then your router could be doing a recursive lookup to get to the ...
And now we will increase the TTL: R1(config-router)#neighbor 192.168.23.3 ebgp-multihop 2 R3(config-router)#neighbor 192.168.12.1 ebgp-multihop 2 Use theebgp-multihopcommand to increase the TTL. Using a value of 2 is enough in our example. R2 will receive a packet with a TTL of 2,...
TTL of the packet. So in the case of a BGP peer multiple hops away, the eBGP packet sent by the BGP speaker will have a TTL of one. The next router in the path to the peer will decrement the TTL to 0, realize it can’t forward the packet, drop it, and generate an ICMP TTL ...
And now we will increase the TTL: R1(config-router)#neighbor 192.168.23.3 ebgp-multihop 2 R3(config-router)#neighbor 192.168.12.1 ebgp-multihop 2 Use theebgp-multihopcommand to increase the TTL. Using a value of 2 is enough in our example. R2 will receive a packet with a TTL of 2,...