Rare project developers

[Alexander Gall <>]

On Tue, 14 Jun 2022 11:09:24 +0200, mc36 <> said:

> hi,
> On 6/14/22 10:20, Alexander Gall wrote:
>> That doesn't happen. When the port is configured, the oper state is
>> never reported back. All I see is (apart from some other "rx" messages
>> unrelated to the port state)
> so it starts getting more and more interesting:


> sid(cfg)#show interfaces sdn1 | first 1
> % no such interface
> sid(cfg)#interface sdn1
> sid(cfg-if)#show interfaces sdn1 | first 1
> sdn1 is down

> sid(cfg-if)#^Z
> sid(cfg)#server p4lang p4
> sid(cfg-server)#show interfaces sdn1 | first 1
> sdn1 is down

> sid(cfg-server)#export-port sdn1 1
> sid(cfg-server)#show interfaces sdn1 | first 1
> sdn1 is down

> sid(cfg-server)#show interfaces sdn1 | first 1
> sdn1 is down

> sid(cfg-server)#info prtTcp.connectionRcvd:prtTcp.java:756 got future 
> acknowledge number p4lang loopback0 9080 -> 10.8.255.1 37192
> debug servP4langConn.doNegot:servP4langConn.java:184 fwd0 rx: dynrange 666 
> 6666
> debug servP4langCfg.sendLine:servP4langCfg.java:1000 fwd0 tx: ports_add 1 0 
> 0 0 0
> warning servP4langConn.doNegot:servP4langConn.java:239 neighbor 10.8.255.1 
> up
> debug servP4langCfg.sendLine:servP4langCfg.java:1000 fwd0 tx: state 1 1 0 0 
> 0 0
> debug servP4langCfg.sendLine:servP4langCfg.java:1000 fwd0 tx: mtu 1 1500
> debug servP4langCfg.sendLine:servP4langCfg.java:1000 fwd0 tx: mylabel4_add 
> 1025147 0
> sid(cfg-server)#
> sid(cfg-server)#show interfaces sdn1 | first 1
> sdn1 is down

> sid(cfg-server)#debug servP4langConn.doReports:servP4langConn.java:256 fwd0 
> rx: state 1 1
> sid(cfg-server)#
> sid(cfg-server)#show interfaces sdn1 | first 1
> sdn1 is up

> sid(cfg-server)#

This is on an ASIC, not the model, right? The port actually reports
going UP, which doesn't happen on the model (at least for me). If this
*is* on the model, I'd like to understand why it behaves differently
from mine.

> that is, freerouter, up until it gets the state 1 1 reports the port
> down, that is,

1 is "up", no?

> unless that message, it's impossible that you pinged anything 
> successfully????

I can actually ping as long as freertr thinks the port is up. That's
because the model doesn't care about the port oper status and packets
can flow in both directions. They only get dropped by freertr once it
believes the port is down and re-programs the tables.

-- 
Alex