Routing

Hi,

I have a strange problem.

MX80 router:

> show interfaces terse
xe-0/0/0.0 up up inet 63.141.223.38/30
inet6 2001:590::3f8d:df26/126
fe80::6687:88ff:fe5b:e7f8/64
multiservice
xe-0/0/1 up up
xe-0/0/1.0 up up inet 198.144.120.1/23
inet6 2001:590:3803::1/64
fe80::6687:88ff:fe5b:e7f9/64
multiservice
lo0 up up
lo0.0 up up inet 198.144.120.2 --> 0/0
inet6 2001:590:3803::2
fe80::6687:880f:fc5b:e8f7
lo0.16384 up up inet 127.0.0.1 --> 0/0
lo0.16385 up up inet

From internet:

ping 198.144.120.2
PING 198.144.120.2 (198.144.120.2) 56(84) bytes of data.
64 bytes from 198.144.120.2: icmp_seq=1 ttl=56 time=53.6 ms
64 bytes from 198.144.120.2: icmp_seq=2 ttl=56 time=53.6 ms
64 bytes from 198.144.120.2: icmp_seq=3 ttl=56 time=53.7 ms
64 bytes from 198.144.120.2: icmp_seq=4 ttl=56 time=53.6 ms

From 198.144.192.5 (direct connect switch).

admin> ping 198.144.120.2
PING 198.144.120.2 (198.144.120.2): 56 data bytes
^C
--- 198.144.120.2 ping statistics ---
2 packets transmitted, 0 packets received, 100% packet loss

admin> show arp | match 198.144.120.2

{master:0}

on router:

monitor traffic interface xe-0/0/1.0 matching "arp" no-resolve

23:58:35.349348  In arp who-has 198.144.120.2 tell 198.144.120.5

I do not understand what the problem is?

Hi,

If you type show route 198.144.120.2 and it should it learned through direct 198.144.120.0/23

Then try to make more specific route to 198.144.120.2 like static route on your switch

set routing-options static route 198.144.120.2 next-hop 198.144.120.1

Mohamed Elhariry

JNCIE-M/T # 1059, CCNP & CCIP

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If this post was helpful, please mark this post as an "Accepted Solution".Kudos are always appreciated!

Yes, it's works.

Why on MX-80 does not work that sort of proxy arp?

He a direct route to the interface lo0.

Best solution:

admin@mx80-koddos> show configuration interfaces xe-0/0/1
unit 0 {
family inet {
address 198.144.120.1/23 {
arp 198.144.120.2 mac 64:87:88:5b:e7:f9 publish;
}
}