Hello,
MS-MIC (and MS-MPC NPUs as well) automatically cuts out network (in your
case .128) and broadcast (in your case .255) IPs.
The rest cannot be expressed as single prefix, hence a bunch of smaller
prefixes is annonced instead.
This was done as PR 1019354 fix
https://prsearch.juniper.net/InfoCenter/index?page=prcontent&id=PR1019354
HTH
Thx
Alex
On 20/04/2016 00:48, Aaron wrote:
Very interesting. anyone know why this is happening ? Is this documented ?
I put a /25 as the public nat pool, but look what this mx104 is advertising
via bgp.. It appears to chop up that /25 into a bunch of smaller subnets and
advertise those out
agould@eng-lab-mx104-cgn> show configuration | grep 1.2.3. | display set
set services nat pool nat1 address 1.2.3.128/25
agould@eng-lab-mx104-cgn> show route advertising-protocol bgp 10.101.0.2
table one.inet.0
one.inet.0: 782 destinations, 970 routes (782 active, 0 holddown, 0 hidden)
Prefix Nexthop MED Lclpref AS path
* 10.144.2.4/30 Self 100 I
* 1.2.3.129/32 Self 100 I
* 1.2.3.130/31 Self 100 I
* 1.2.3.132/30 Self 100 I
* 1.2.3.136/29 Self 100 I
* 1.2.3.144/28 Self 100 I
* 1.2.3.160/27 Self 100 I
* 1.2.3.192/27 Self 100 I
* 1.2.3.224/28 Self 100 I
* 1.2.3.240/29 Self 100 I
* 1.2.3.248/30 Self 100 I
* 1.2.3.252/31 Self 100 I
* 1.2.3.254/32 Self 100 I
Aaron
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