[j-nsp] ARP resolution algorithm? Storage of MX transit packets?

[Saku Ytti]

On Thu, 31 Jan 2019 at 16:22, Krasimir Avramski <krasi at smartcom.bg> wrote:

> Yes, you can for ipv4/ipv6:
> https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/arp-learning-neighor-discovery-disabling.html
>
> With the ability to set static ARP/ND you definitely could offload host route programming to external system.

Cool. Have you tried it? In my trivial test it does not disable punting:

ytti at r24.labxtx01.us.bb-re1# run show route forwarding-table table
default destination 192.0.2.0/24
Routing table: default.inet
Internet:
Destination        Type RtRef Next hop           Type Index    NhRef Netif
192.0.2.0/24       intf     0                    rslv      825     1 ae0.0
192.0.2.0/32       dest     0 192.0.2.0          recv      797     1 ae0.0

{master}[edit interfaces ae0 unit 0 family inet]
ytti at r24.labxtx01.us.bb-re1# set no-neighbor-learn

{master}[edit interfaces ae0 unit 0 family inet]
ytti at r24.labxtx01.us.bb-re1# commit
re1:
configuration check succeeds
re0:
commit complete
re1:
commit complete

{master}[edit interfaces ae0 unit 0 family inet]
ytti at r24.labxtx01.us.bb-re1# run show route forwarding-table table
default destination 192.0.2.0/24
Routing table: default.inet
Internet:
Destination        Type RtRef Next hop           Type Index    NhRef Netif
192.0.2.0/24       intf     0                    rslv      825     1 ae0.0
192.0.2.0/32       dest     0 192.0.2.0          recv      797     1 ae0.0


It did disable resolution though, but it's not really attractive to me
without disabling punting.

-- 
  ++ytti