Hi All,
I have below config
IPV4 Ldp session
7x50 -------------------------------------------------------- Cisco ASR 9006 ( VERSION 5.3.2)
I see with below config, Cisco ASR9K is not sending dual-stack capability TLV ( 0x701 Dual-Stack Capability TLV) as part of hello message,
I see 7x50 is sending dual-stack capability Tlv
Cisco ASR 9006 Config :
---------------------------
ipv4 access-list test
10 permit ipv4 host 10.20.1.2 any
!
ipv4 access-list test
10 permit ipv4 host 10.20.1.2 any
!
.
.
.
router ospf 1
router-id 10.20.1.8
capability opaque
area 0
mpls traffic-eng
interface Loopback0
dead-interval 15
hello-interval 5
!
interface GigabitEthernet0/0/0/16
mtu-ignore enable
dead-interval 15
hello-interval 5
!
interface GigabitEthernet0/0/0/18
mtu-ignore enable
dead-interval 15
hello-interval 5
!
!
mpls traffic-eng router-id Loopback0
!
mpls traffic-eng
interface GigabitEthernet0/0/0/16
!
interface GigabitEthernet0/0/0/18
!
!
mpls ldp
router-id 10.20.1.8
neighbor
dual-stack transport-connection prefer ipv4 for-peers test
!
interface GigabitEthernet0/0/0/16
!
interface GigabitEthernet0/0/0/18
!
!
end
RP/0/RSP1/CPU0:ios#
--------------------------
RP/0/RSP1/CPU0:ios#show mpls ldp neighbor 10.20.1.2 detail
Thu Jul 21 21:03:47.357 UTC
Peer LDP Identifier: 10.20.1.2:0
TCP connection: 10.20.1.2:646 - 10.20.1.8:58025
Graceful Restart: No
Session Holdtime: 30 sec
State: Oper; Msgs sent/rcvd: 255/242; Downstream-Unsolicited
Up time: 00:33:17
LDP Discovery Sources:
IPv4: (1)
GigabitEthernet0/0/0/16
IPv6: (0)
Addresses bound to this peer:
IPv4: (2)
10.10.45.1 10.20.1.2
IPv6: (0)
Peer holdtime: 30 sec; KA interval: 10 sec; Peer state: Estab
NSR: Disabled
Capabilities:
Sent:
0x508 (MP: Point-to-Multipoint (P2MP))
0x509 (MP: Multipoint-to-Multipoint (MP2MP))
0x50b (Typed Wildcard FEC)
Received:
0x508 (MP: Point-to-Multipoint (P2MP))
RP/0/RSP1/CPU0:ios#
7x50 packets :
------------------
455 2016/07/21 22:18:46.90 UTC MINOR: DEBUG #2001 Base LDP
"LDP: LDP
Send Hello packet (msgId = 550) from 10.10.45.1 to 224.0.0.2
Protocol version = 1
Source LDPLSRID 10.20.1.2:0
Hello hold time = 30 Targeted bit = 0 Respond bit = 0
Transport Connection Preference = IPv4 --------------------------------------> Dual-stack Capability Tlv with TR=4
IPv4 Transport Address = 10.20.1.2
Configuration Sequence number = 1895091222
Interface ID = 7
Adjacency Capability = yes
Prefix IPv4 = enabled
Prefix IPv6 = enabled
P2MP IPv4 = enabled
P2MP IPv6 = enabled
MP2MP IPv4 = disabled
MP2MP IPv6 = disabled
Cisco ASR Packet it does not contain Transport Connection Preference in the hello packet.
-------------------------------------------------------------------------------------------------------------------------
454 2016/07/21 22:18:45.00 UTC MINOR: DEBUG #2001 Base LDP
"LDP: LDP
Recv Hello packet (msgId = 0) from 10.10.45.2 on 224.0.0.2
Protocol version = 1
Source LDPLSRID 10.20.1.8:0
Hello hold time = 15 Targeted bit = 0 Respond bit = 0
IPv4 Transport Address = 10.20.1.8
