[c-nsp] Incompatibility for send-label between Cisco andJuniper?

[Alex]

Jason,

I've got it working in the lab (long email):
Diagram:
AS 2,T320-ge-7/0/2(10.16.0.1/24)<---->(10.16.0.2/24)Cisco 7301-gi0/2, AS1.

Juniper relevant config and printouts:

[edit protocols bgp]
user at as2# show
group test {
    type external;
    family inet {
        unicast;  <==========apparently, these 2 can
        labeled-unicast { <====be configured together
            rib {
                inet.3;
            }
        }
    }
    export test;
    peer-as 1;
    neighbor 10.16.0.2;

[edit routing-options]
user at as2# show
rib inet.3 {
    static {
        route 10.177.177.0/24 discard;
        route 10.176.176.0/24 reject;
    }
}
static {
    route 2.2.2.0/26 discard;
    route 10.1.0.0/16 next-hop 10.0.2.2;
    route 10.100.0.0/16 next-hop 10.0.1.2;
    route 10.178.178.0/24 discard;
}
autonomous-system 2;

[edit policy-options policy-statement test]
user at as2# show
term 1 {
    from protocol static;
    then accept;
}
user at as2> show bgp summary
Groups: 1 Peers: 1 Down peers: 0
Table          Tot Paths  Act Paths Suppressed    History Damp State 
Pending
inet.0                 1          1          0          0          0 
0
inet.3                 1          1          0          0          0 
0
Peer               AS      InPkt     OutPkt    OutQ   Flaps Last Up/Dwn 
State|#Active/Received/Damped...
10.16.0.2           1         31         32       0       0       13:50 
Establ
  inet.0: 1/1/0
  inet.3: 1/1/0

user at as2> show route table inet.3

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

10.176.176.0/24    *[Static/5] 00:42:33
                      Reject
10.177.177.0/24    *[Static/5] 00:46:39
                      Discard
10.186.186.0/24    *[BGP/170] 00:25:41, MED 0, localpref 100
                      AS path: 1 I
                    > to 10.16.0.2 via ge-7/0/2.0, Push 0

user at as2> show route receive-protocol bgp 10.16.0.2 extensive

inet.0: 15 destinations, 15 routes (14 active, 0 holddown, 1 hidden)
* 10.187.187.0/24 (1 entry, 1 announced)
     Nexthop: 10.16.0.2
     MED: 0
     AS path: 1 I

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

* 10.186.186.0/24 (1 entry, 1 announced)
     Route Label: 0
     Nexthop: 10.16.0.2
     MED: 0
     AS path: 1 I

user at as2> show route advertising-protocol bgp 10.16.0.2

inet.0: 15 destinations, 15 routes (14 active, 0 holddown, 1 hidden)
  Prefix                  Nexthop              MED     Lclpref    AS path
* 2.2.2.0/26              Self                                    I
* 10.178.178.0/24         Self                                    I

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)
  Prefix                  Nexthop              MED     Lclpref    AS path
* 10.176.176.0/24         Self                                    I
* 10.177.177.0/24         Self                                    I

Cisco config and relevant printouts:

interface Loopback186
 ip address 10.186.186.1 255.255.255.0
!
interface Loopback187
 ip address 10.187.187.1 255.255.255.0
!
router bgp 1
 bgp log-neighbor-changes
 neighbor 10.16.0.1 remote-as 2
 neighbor 10.16.0.1 update-source GigabitEthernet0/2
 !
 address-family ipv4
 neighbor 10.16.0.1 activate
 neighbor 10.16.0.1 soft-reconfiguration inbound
 neighbor 10.16.0.1 route-map lb out
 neighbor 10.16.0.1 send-label
 no auto-summary
 no synchronization
 network 10.186.186.0 mask 255.255.255.0
 network 10.187.187.0 mask 255.255.255.0
 exit-address-family
!
ip prefix-list 186 seq 10 permit 10.186.186.0/24
!
route-map lb permit 10
 match ip address prefix-list 186
 set mpls-label
!
route-map lb permit 20

internet#sh ip bgp neighbors 10.16.0.1 advertised-routes
BGP table version is 21, local router ID is 1.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - 
internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 10.186.186.0/24  0.0.0.0                  0         32768 i
*> 10.187.187.0/24  0.0.0.0                  0         32768 i

Total number of prefixes 2

internet#sh ip bgp neighbors 10.16.0.1 received-routes
BGP table version is 21, local router ID is 1.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - 
internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric LocPrf Weight Path
*> 2.2.2.0/26       10.16.0.1                              0 2 i
*> 10.176.176.0/24  10.16.0.1                              0 2 i
*> 10.177.177.0/24  10.16.0.1                              0 2 i
*> 10.178.178.0/24  10.16.0.1                              0 2 i

internet#sh ip bgp 10.176.176.0
BGP routing table entry for 10.176.176.0/24, version 19
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Not advertised to any peer
  2, (received & used)
    10.16.0.1 from 10.16.0.1 (10.19.14.1)
      Origin IGP, localpref 100, valid, external, best,
      mpls labels in/out nolabel/100064
internet#sh ip bgp 10.186.186.0
BGP routing table entry for 10.186.186.0/24, version 20
Paths: (1 available, best #1, table Default-IP-Routing-Table)
  Advertised to update-groups:
     2
  Local
    0.0.0.0 from 0.0.0.0 (1.1.1.1)
      Origin IGP, metric 0, localpref 100, weight 32768, valid, sourced, 
local, best,
      mpls labels in/out unasgnd(from LDP)/nolabel

So "unicast" and "labeled-unicast" are not mutually exclusive, as the doc 
suggests (at least in JUNOS 7.4R2.6).
Of course, if You don't want all inet.3 to be advertised then You can filter 
out unwanted prefixes outbound from Juniper by applying export policy.

Regards
Alex