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Purpose: MPLS TE Unequal-Cost Load Sharing.
Comments:
Traffic from R1(cnc1) to R5(cnc5) uses paths through
R2(cnc2),R3(cnc3) and R4(cnc4) with a 1:2:3 ratio.
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Topology yang digunakan adalah sebagai berikut:
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[1]. Tunnel 1 Explicit-Path R1-R4-R5 tunnel MPLS Trffic-Eng Load share 10
[2]. Tunnel 2 Explicit-Path R1-R3-R5 tunnel MPLS Trffic-Eng Load share 20
[3]. Tunnel 3 Explicit-Path R1-R4-R5 tunnel MPLS Trffic-Eng Load share 30
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cnc1#sh ip route 5.5.5.5
Routing entry for 5.5.5.5/32
Known via “ospf 1”, distance 110, metric 129, type intra area
Last update from 5.5.5.5 on Tunnel1, 00:51:51 ago
Routing Descriptor Blocks:
* 5.5.5.5, from 5.5.5.5, 00:51:51 ago, via Tunnel1
Route metric is 129, traffic share count is 1
5.5.5.5, from 5.5.5.5, 00:51:51 ago, via Tunnel2
Route metric is 129, traffic share count is 2
5.5.5.5, from 5.5.5.5, 00:51:51 ago, via Tunnel3
Route metric is 129, traffic share count is 3
cnc1#
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cnc1#show mpls traffic-eng tunnels tunnel 1
Name: cnc1_t1 (Tunnel1) Destination: 5.5.5.5
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 1, type explicit R1-R4-R5 (Basis for Setup, path weight 128)
Config Parameters:
Bandwidth: 0 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 10
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 1 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : –
OutLabel : Serial3/0, 16
RSVP Signalling Info:
Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 1, Tun_Instance 5
RSVP Path Info:
My Address: 192.168.10.9
Explicit Route: 192.168.10.10 192.168.10.18 5.5.5.5
Record Route: NONE
Tspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
Shortest Unconstrained Path Info:
Path Weight: 128 (TE)
Explicit Route: 192.168.10.10 192.168.10.18 5.5.5.5
History:
Tunnel:
Time since created: 1 hours, 32 minutes
Time since path change: 1 hours, 23 minutes
Number of LSP IDs (Tun_Instances) used: 5
Current LSP:
Uptime: 1 hours, 23 minutes
Selection: reoptimization
Prior LSP:
ID: path option 1 [4]
Removal Trigger: configuration changed
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cnc1#show mpls traffic-eng tunnels tunnel 2
Name: cnc1_t2 (Tunnel2) Destination: 5.5.5.5
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 1, type explicit R1-R3-R5 (Basis for Setup, path weight 128)
Config Parameters:
Bandwidth: 0 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 20
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 1 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : –
OutLabel : Serial3/1, 29
RSVP Signalling Info:
Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 2, Tun_Instance 5
RSVP Path Info:
My Address: 192.168.10.5
Explicit Route: 192.168.10.6 192.168.10.22 5.5.5.5
Record Route: NONE
Tspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
Shortest Unconstrained Path Info:
Path Weight: 128 (TE)
Explicit Route: 192.168.10.10 192.168.10.18 5.5.5.5
History:
Tunnel:
Time since created: 1 hours, 29 minutes
Time since path change: 1 hours, 22 minutes
Number of LSP IDs (Tun_Instances) used: 5
Current LSP:
Uptime: 1 hours, 22 minutes
Selection: reoptimization
Prior LSP:
ID: path option 1 [4]
Removal Trigger: configuration changed
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cnc1#show mpls traffic-eng tunnels tunnel 3
Name: cnc1_t3 (Tunnel3) Destination: 5.5.5.5
Status:
Admin: up Oper: up Path: valid Signalling: connected
path option 1, type explicit R1-R2-R5 (Basis for Setup, path weight 128)
Config Parameters:
Bandwidth: 0 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF
Metric Type: TE (default)
AutoRoute: enabled LockDown: disabled Loadshare: 30
auto-bw: disabled
Active Path Option Parameters:
State: explicit path option 1 is active
BandwidthOverride: disabled LockDown: disabled Verbatim: disabled
InLabel : –
OutLabel : Serial3/2, 30
RSVP Signalling Info:
Src 1.1.1.1, Dst 5.5.5.5, Tun_Id 3, Tun_Instance 4
RSVP Path Info:
My Address: 192.168.10.1
Explicit Route: 192.168.10.2 192.168.10.26 5.5.5.5
Record Route: NONE
Tspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
RSVP Resv Info:
Record Route: NONE
Fspec: ave rate=0 kbits, burst=1000 bytes, peak rate=0 kbits
Shortest Unconstrained Path Info:
Path Weight: 128 (TE)
Explicit Route: 192.168.10.10 192.168.10.18 5.5.5.5
History:
Tunnel:
Time since created: 1 hours, 27 minutes
Time since path change: 1 hours, 21 minutes
Number of LSP IDs (Tun_Instances) used: 4
Current LSP:
Uptime: 1 hours, 21 minutes
Selection: reoptimization
Prior LSP:
ID: path option 1 [3]
Removal Trigger: configuration changed
cnc1#
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cnc1#sh mpls traffic-eng link-management summary
System Information::
Links Count: 3
Flooding System: enabled
IGP Area ID:: ospf 1 area 0
Flooding Protocol: OSPF
Flooding Status: data flooded
Periodic Flooding: enabled (every 180 seconds)
Flooded Links: 3
IGP System ID: 1.1.1.1
MPLS TE Router ID: 1.1.1.1
Neighbors: 3
Link ID:: Se3/0 (192.168.10.9)
Local Intfc ID: 6
Link Status:
SRLGs: None
Intfc Switching Capability Descriptors:
Default: Intfc Switching Cap psc1, Encoding packet
Link Label Type: Packet
Physical Bandwidth: 1544 kbits/sec
Max Res Global BW: 1158 kbits/sec (reserved: 0% in, 0% out)
Max Res Sub BW: 0 kbits/sec (reserved: 100% in, 100% out)
MPLS TE Link State: MPLS TE on, RSVP on, admin-up, flooded, allocated
Inbound Admission: allow-all
Outbound Admission: allow-if-room
Admin. Weight: 64 (IGP)
IGP Neighbor Count: 1
Link ID:: Se3/1 (192.168.10.5)
Local Intfc ID: 7
Link Status:
SRLGs: None
Intfc Switching Capability Descriptors:
Default: Intfc Switching Cap psc1, Encoding packet
Link Label Type: Packet
Physical Bandwidth: 1544 kbits/sec
Max Res Global BW: 1158 kbits/sec (reserved: 0% in, 0% out)
Max Res Sub BW: 0 kbits/sec (reserved: 100% in, 100% out)
MPLS TE Link State: MPLS TE on, RSVP on, admin-up, flooded, allocated
Inbound Admission: allow-all
Outbound Admission: allow-if-room
Admin. Weight: 64 (IGP)
IGP Neighbor Count: 1
Link ID:: Se3/2 (192.168.10.1)
Local Intfc ID: 8
Link Status:
SRLGs: None
Intfc Switching Capability Descriptors:
Default: Intfc Switching Cap psc1, Encoding packet
Link Label Type: Packet
Physical Bandwidth: 1544 kbits/sec
Max Res Global BW: 1158 kbits/sec (reserved: 0% in, 0% out)
Max Res Sub BW: 0 kbits/sec (reserved: 100% in, 100% out)
MPLS TE Link State: MPLS TE on, RSVP on, admin-up, flooded, allocated
Inbound Admission: allow-all
Outbound Admission: allow-if-room
Admin. Weight: 64 (IGP)
IGP Neighbor Count: 1
cnc1#
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Contoh konfigurasi di router cnc1:
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cnc1#
!
hostname cnc1
!
ip cef
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mpls traffic-eng tunnels
mpls traffic-eng reoptimize timers frequency 60
no mpls traffic-eng auto-bw timers frequency 0
mpls label protocol ldp
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interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface Tunnel1
ip unnumbered Loopback0
no clns route-cache
tunnel destination 5.5.5.5
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng path-option 1 explicit name R1-R4-R5
tunnel mpls traffic-eng load-share 10
no routing dynamic
!
interface Tunnel2
ip unnumbered Loopback0
tunnel destination 5.5.5.5
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng path-option 1 explicit name R1-R3-R5
tunnel mpls traffic-eng load-share 20
no routing dynamic
!
interface Tunnel3
ip unnumbered Loopback0
tunnel destination 5.5.5.5
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng autoroute announce
tunnel mpls traffic-eng path-option 1 explicit name R1-R2-R5
tunnel mpls traffic-eng load-share 30
no routing dynamic
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!
interface FastEthernet0/0
ip address 10.14.100.1 255.255.255.252
duplex half
mpls ip
!
interface Serial3/0
ip address 192.168.10.9 255.255.255.252
mpls traffic-eng tunnels
mpls ip
serial restart-delay 0
ip rsvp bandwidth
!
interface Serial3/1
ip address 192.168.10.5 255.255.255.252
mpls traffic-eng tunnels
mpls ip
serial restart-delay 0
ip rsvp bandwidth
!
interface Serial3/2
ip address 192.168.10.1 255.255.255.252
mpls traffic-eng tunnels
mpls ip
serial restart-delay 0
ip rsvp bandwidth
!
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router ospf 1
mpls traffic-eng router-id Loopback0
mpls traffic-eng area 0
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 0
network 10.14.100.0 0.0.0.3 area 0
network 192.168.10.0 0.0.0.3 area 0
network 192.168.10.4 0.0.0.3 area 0
network 192.168.10.8 0.0.0.3 area 0
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ip explicit-path name R1-R4-R5 enable
next-address 192.168.10.10
next-address 192.168.10.18
next-address 5.5.5.5
!
ip explicit-path name R1-R3-R5 enable
next-address 192.168.10.6
next-address 192.168.10.22
next-address 5.5.5.5
!
ip explicit-path name R1-R2-R5 enable
next-address 192.168.10.2
next-address 192.168.10.26
next-address 5.5.5.5
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ref:
[1]. http://www.ccie18473.net
Abu.Aisyah [Blog] @_@ 