Network Requirements
- Four devices in the LAN are within the EIPS Ring 1. Configure the EIPS segment mode and block the secondary port gigabitethernet0/2 on Master to achieve the ring protection.
- When the link between the transmission node Transit1 and Transit2 is disconnected, unblock the STP blocked status for gigabitethernet0/2 on the Master node to achieve data switchover and ensure the communications in the LAN not affected.
Network Topology
Figure 3-5 Networking of configuring the EIPS single ring in the hierarchical mode
Configuration Steps
Step 1: Configure the VLAN and port link type.
#Create VLAN2 and VLAN3 on Master and configure the link type of ports gigabitethernet0/1 and gigabitethernet0/2 as Trunk, permitting the services of VLAN2 and VLAN3 to pass. Configure the PVID as 1.
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Master#configure terminal
Master(config)#vlan 2-3
Master(config)#interface gigabitethernet 0/1-0/2
Master(config-if-range)#switchport mode trunk
Master(config-if-range)#switchport trunk allowed vlan add 2-3
Master(config-if-range)#switchport trunk pvid vlan 1
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#Map VLAN2 and VLAN3 on Master to the STP instance 0. Disable the STP on the ports gigabitethernet0/1 and gigabitethernet0/2.
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Master(config-if-range)#no spanning-tree enable
Master(config-if-range)#exit
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#Create VLAN2 and VLAN3 on Transit1, and map VLAN2 and VLAN3 to the STP instance 0. Configure the link type of ports gigabitethernet0/1 and gigabitethernet0/2 as Trunk, permitting the services of VLAN2 and VLAN3 to pass. Configure the PVID as 1. Disable the STP on ports gigabitethernet0/1 and gigabitethernet0/2. (Omitted)
#Create VLAN2 and VLAN3 on Transit2, and map VLAN2 and VLAN3 to the STP instance 0. Configure the link type of ports gigabitethernet0/1 and gigabitethernet0/2 as Trunk, permitting the services of VLAN2 and VLAN3 to pass. Configure the PVID as 1. Disable the STP on ports gigabitethernet0/1 and gigabitethernet0/2. (Omitted)
#Create VLAN2 and VLAN3 on Transit3, and map VLAN2 and VLAN3 to the STP instance 0. Configure the link type of ports gigabitethernet0/1 and gigabitethernet0/2 as Trunk, permitting the services of VLAN2 and VLAN3 to pass. Configure the PVID as 1. Disable the STP on ports gigabitethernet0/1 and gigabitethernet0/2. (Omitted)
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VLAN2 is the control VLAN, which is only used to transfer the EIPS protocol packets. VLAN3 is the data VLAN, which is used to transfer services.
- To enable the EIPS function, the control VLAN and data VLAN of the EIPS must be mapped to the corresponding STP instance and the STP function on the port must be disabled.
Step 2: Configure the EIPS hierarchical mode
#Create the main ring master node Ring1 in the hierarchical mode on Master. Configure the level number of the EIPS ring as 0, segment number as 0, instance as 0, control VLAN as VLAN2, primary port as gigabitethernet0/1, and secondary port as gigabitethernet0/2. Enable the EIPS.
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Master(config)#eips ring 1 master segment
Master(config-eips)#control vlan 2
Master(config-eips)#level 0
Master(config-eips)#segment 0
Master(config-eips)#instance 0
Master(config-eips)#primary interface gigabitethernet 0/1
Master(config-eips)#secondary interface gigabitethernet 0/2
Master(config-eips)#eips start
Master(config-eips)#exit
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#Create the transmission node Ring1 in the hierarchical mode on Transit1. Configure the level number of the EIPS ring as 0, segment number as 0, instance as 0, control VLAN as VLAN2, primary port as gigabitethernet0/1, and secondary port as gigabitethernet0/2. Enable the EIPS.
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Transit1(config)#eips ring 1 transit segment
Transit1(config-eips)#control vlan 2
Transit1(config-eips)#level 0
Transit1(config-eips)#segment 0
Transit1(config-eips)#instance 0
Transit1(config-eips)#primary interface gigabitethernet 0/1
Transit1(config-eips)#secondary interface gigabitethernet 0/2
Transit1(config-eips)#eips start
Transit1(config-eips)#exit
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#Create the transmission node Ring1 in the hierarchical mode on Transit2. Configure the level number of the EIPS ring as 0, segment number as 0, instance as 0, control VLAN as VLAN2, primary port as gigabitethernet0/1, and secondary port as gigabitethernet0/2. Enable the EIPS.
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Transit2(config)#eips ring 1 transit segment
Transit2(config-eips)#control vlan 2
Transit2(config-eips)#level 0
Transit2(config-eips)#segment 0
Transit2(config-eips)#instance 0
Transit2(config-eips)#primary interface gigabitethernet 0/1
Transit2(config-eips)#secondary interface gigabitethernet 0/2
Transit2(config-eips)#eips start
Transit2(config-eips)#exit
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#Create the transmission node Ring3 in the hierarchical mode on Transit3. Configure the level number of the EIPS ring as 0, segment number as 0, instance as 0, control VLAN as VLAN2, primary port as gigabitethernet0/1, and secondary port as gigabitethernet0/2. Enable the EIPS.
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Transit3(config)#eips ring 1 transit segment
Transit3(config-eips)#control vlan 2
Transit3(config-eips)#level 0
Transit3(config-eips)#segment 0
Transit3(config-eips)#instance 0
Transit3(config-eips)#primary interface gigabitethernet 0/1
Transit3(config-eips)#secondary interface gigabitethernet 0/2
Transit3(config-eips)#eips start
Transit3(config-eips)#exit
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Step 3: Check the result
#Run the show eips topology-summary command on the four devices. We can view that the EIPS ring status is round and the topology information is consistent.
Master#show eips topology-summary
ring ID : 1
topo status : round
seq host-name mac type interface1 link interface2 link isBorder
--------------------------------------------------------------------------------------------
1 Transit3 0000.0000.008b transit gi0/2 UP gi0/1 UP NO
2 Transit2 0001.7a22.2224 transit gi0/2 UP gi0/1 UP YES
3 Transit1 0000.0010.0017 transit gi0/2 UP gi0/1 UP YES
4 Master 0001.7a54.5d71 master gi0/1 UP gi0/2 UP NO
Transit3#show eips topology-summary
ring ID : 1
topo status : round
seq host-name mac type interface1 link interface2 link isBorder
-------------------------------------------------------------------------------------------
1 Master 0001.7a54.5d71 master gi0/2 UP gi0/1 UP NO
2 Transit1 0000.0010.0017 transit gi0/1 UP gi0/2 UP YES
3 Transit2 0001.7a22.2224 transit gi0/1 UP gi0/2 UP YES
4 Transit3 0000.0000.008b transit gi0/1 UP gi0/2 UP NO
Transit1#show eips topology-summary
ring ID : 1
topo status : round
seq host-name mac type interface1 link interface2 link isBorder
-------------------------------------------------------------------------------------------
1 Transit2 0001.7a22.2224 transit gi0/1 UP gi0/2 UP YES
2 Transit3 0000.0000.008b transit gi0/1 UP gi0/2 UP NO
3 Master 0001.7a54.5d71 master gi0/2 UP gi0/1 UP NO
4 Transit1 0000.0010.0017 transit gi0/1 UP gi0/2 UP YES
Transit2#show eips topology-summary
ring ID : 1
topo status : round
seq host-name mac type interface1 link interface link isBorder
-------------------------------------------------------------------------------------------
1 Transit3 0000.0000.008b transit gi0/1 UP gi0/2 UP NO
2 Master 0001.7a54.5d71 master gi0/2 UP gi0/1 UP NO
3 Transit1 0000.0010.0017 transit gi0/1 UP gi0/2 UP YES
4 Transit2 0001.7a22.2224 transit gi0/1 UP gi0/2 UP YES
#Run the show eips topology command on the four devices. We can view that the secondary port gigabitethernet0/2 on Master is blocked and other ports are unblocked.
Master#show eips topology
ring ID : 1
topo status : round
topo index 1 :
host name : Transit3
eips type : transit
eips status : COMPLETE
border : NO
base MAC : 0000.0000.008b
sys oid.........1.3.6.1.4.1.5651.1.102.146
interface1 : gi0/2
MAC : 0000.0000.008b
role : second
block-status : unblock
link-status : UP
interface2 : gi0/1
MAC : 0000.0000.008b
role : primary
block-status : unblock
link-status : UP
topo index 2 :
host name : Transit2
eips type : transit
eips status : COMPLETE
border : YES
base MAC : 0001.7a22.2224
sys oid.........1.3.6.1.4.1.5651.1.102.146
interface1 : gi0/2
MAC : 0001.7a22.2224
role : second
block-status : unblock
link-status : UP
interface2 : gi0/1
MAC : 0001.7a22.2224
role : primary
block-status : unblock
link-status : UP
topo index 3 :
host name : Transit1
eips type : transit
eips status : COMPLETE
border : YES
base MAC : 0000.0010.0017
sys oid..........1.3.6.1.4.1.5651.1.102.140
interface1 : gi0/2
MAC : 0000.0010.0017
role : second
block-status : unblock
link-status : UP
interface2 : gi0/1
MAC : 0000.0010.0017
role : primary
block-status : unblock
link-status : UP
topo index 4 :
host name : Master
eips type : master
eips status : COMPLETE
border : NO
base MAC.........0001.7a54.5d71
sys oid : 1.3.6.1.4.1.5651.1.102.145
interface1 : gi0/1
MAC : 0001.7a54.5d71
role : primary
block-status : unblock
link-status : UP
interface2 : gi0/2
MAC : 0001.7a54.5d71
role : second
block-status : block
link-status : UP
#When the link between Transit1 and Transit2 is disconnected, run the show eips topology command again. We can view that the ring status changes to not round, EIPS status is FAULT, and the secondary port gigabitethernet0/2 on Master changes to unblock. Transit1 communicates with Transit2 via Master, which ensures uninterrupted communications between Transit1 and Transit2.
Master#show eips topology
ring ID : 1
topo status : not round
topo index 1 :
host name : Transit1
eips type : transit
eips status : FAULT
border : YES
base MAC : 0000.0010.0017
sys oid..........1.3.6.1.4.1.5651.1.102.140
interface1 : gi0/2
MAC : 0000.0010.0017
role : second
block-status : block
link-status : DOWN
interface2 : gi0/1
MAC : 0000.0010.0017
role : primary
block-status : unblock
link-status : UP
topo index 2 :
host name : Master
eips type : master
eips status : FAULT
border : NO
base MAC : 0001.7a54.5d71
sys oid..........1.3.6.1.4.1.5651.1.102.145
interface1 : gi0/1
MAC : 0001.7a54.5d71
role : primary
block-status : unblock
link-status : UP
interface2 : gi0/2
MAC : 0001.7a54.5d71
role : second
block-status : unblock
link-status : UP
topo index 3 :
host name : Transit3
eips type : transit
eips status : FAULT
border : NO
base MAC : 0000.0000.008b
sys oid..........1.3.6.1.4.1.5651.1.102.146
interface1 : gi0/2
MAC : 0000.0000.008b
role : second
block-status : unblock
link-status : UP
interface2 : gi0/1
MAC : 0000.0000.008b
role : primary
block-status : unblock
link-status : UP
topo index 4 :
host name : Transit2
eips type : transit
eips status : FAULT
border : YES
base MAC : 0001.7a22.2224
sys oid..........1.3.6.1.4.1.5651.1.102.146
interface1 : gi0/2
MAC : 0001.7a22.2224
role : second
block-status : unblock
link-status : UP
interface2 : gi0/1
MAC : 0001.7a22.2224
role : primary
block-status : block
link-status : DOWN
Switch
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