Hi there . I have configure a GRE tunnel in a test lab comprising of Cisco ASR920 series routers . All interface are GE . Tunnel status is up/up , I can ping the far end , ISIS is up over the tunnel and both routers are LDP adjacent as well . I can ping all the network across GRE tunnel but the problem is I can pass more than 1mbps traffic through that tunnel . I have traffic generator sending a stream of 10mbps and I can only receive 1 mbps on the far end . Tunnel interface configs are copied below .
PE:6
interface Tunnel100
ip address 172.16.96.6 255.255.255.0
no ip redirects
ip router isis core
mpls ip
tunnel source TenGigabitEthernet0/0/9
tunnel destination 172.20.0.10
tunnel path-mtu-discovery
isis circuit-type level-2-only
isis metric 500
isis authentication mode md5
isis authentication key-chain ISIS
end
PE:9
interface Tunnel100
description GRE Tunnel to PE-6
ip address 172.16.96.9 255.255.255.0
no ip redirects
ip router isis core
mpls ip
tunnel source TenGigabitEthernet0/0/7
tunnel destination 172.20.0.1
tunnel path-mtu-discovery
isis circuit-type level-2-only
isis metric 500
isis authentication mode md5
isis authentication key-chain ISIS
end
PE-9#show isis neighbors
Tag core:
System Id Type Interface IP Address State Holdtime Circuit Id
PE-6 L2 Tu100 172.16.96.6 UP 27 12
PE-8 L2 Te0/0/3 172.16.98.8 UP 25 10
PE-10 L2 Tu110 172.16.109.10 UP 24 14
P-1 L2 Te0/0/1 172.16.119.11 UP 25 06
RR-3 L2 Te0/0/11 172.16.239.23 UP 26 01
PE-9#show mpls ldp neighbor
Peer LDP Ident: 172.16.1.8:0; Local LDP Ident 172.16.1.9:0
TCP connection: 172.16.1.8.646 - 172.16.1.9.64572
State: Oper; Msgs sent/rcvd: 7363/7367; Downstream
Up time: 4d03h
LDP discovery sources:
Targeted Hello 172.16.1.9 -> 172.16.1.8, active, passive
TenGigabitEthernet0/0/3, Src IP addr: 172.16.98.8
Addresses bound to peer LDP Ident:
172.16.1.8 172.16.98.8
Peer LDP Ident: 172.16.1.11:0; Local LDP Ident 172.16.1.9:0
TCP connection: 172.16.1.11.12064 - 172.16.1.9.646
State: Oper; Msgs sent/rcvd: 3549/3515; Downstream
Up time: 2d02h
LDP discovery sources:
TenGigabitEthernet0/0/1, Src IP addr: 172.16.119.11
Targeted Hello 172.16.1.9 -> 172.16.1.11, active, passive
Addresses bound to peer LDP Ident:
172.16.0.11 172.16.1.11 172.16.112.11 172.16.150.11
172.16.111.11 172.16.119.11 172.16.221.11 172.16.211.11
172.16.114.11 172.16.116.11
Peer LDP Ident: 172.16.1.6:0; Local LDP Ident 172.16.1.9:0
TCP connection: 172.16.1.6.646 - 172.16.1.9.63118
State: Oper; Msgs sent/rcvd: 3351/3331; Downstream
Up time: 1d23h
LDP discovery sources:
Tunnel100, Src IP addr: 172.16.96.6
Targeted Hello 172.16.1.9 -> 172.16.1.6, active, passive
Addresses bound to peer LDP Ident:
172.16.1.6 172.20.0.1 172.16.96.6 172.16.76.6
172.16.64.6 172.16.106.6 172.16.65.6 172.16.116.6
Peer LDP Ident: 172.16.1.10:0; Local LDP Ident 172.16.1.9:0
TCP connection: 172.16.1.10.55480 - 172.16.1.9.646
State: Oper; Msgs sent/rcvd: 3340/3342; Downstream
Up time: 1d23h
LDP discovery sources:
Tunnel110, Src IP addr: 172.16.109.10
Targeted Hello 172.16.1.9 -> 172.16.1.10, active, passive
Addresses bound to peer LDP Ident:
172.16.1.10 172.16.105.10 172.20.0.6 172.16.109.10
172.16.106.10
