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This chapter describes the Cisco NX-OS Enhanced Interior Gateway Routing Protocol (EIGRP) commands that begin with A.
To configure an address family for the Enhanced Interior Gateway Routing Protocol (EIGRP), use the address-family command. To remove an address family, use the no form of this command.
address-family ipv4 unicast
no address-family ipv4 unicast
ipv4 |
Specifies the IPv4 address family. |
unicast |
Specifies unicast address support. |
None
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5.0(3)N1(1) |
This command was introduced. |
This command requires the LAN Base Services license.
This example shows how to set the IPv4 unicast address family for an EIGRP instance:
switch(config)# router eigrp 201
switch(config-router)# address-family ipv4 unicast
switch(config-router)#
To enable authentication for the Enhanced Interior Gateway Routing Protocol (EIGRP) packets and to specify the set of keys that can be used on an interface, use the authentication key-chain command. To prevent authentication, use the no form of this command.
authentication key-chain name-of-chain
no authentication key-chain name-of-chain
name-of-chain |
Group of keys that are valid. |
No authentication is provided for EIGRP packets.
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5.0(3)N1(1) |
This command was introduced. |
Set the authentication mode using the authentication mode command in VRF configuration mode. You must separately configure a key chain using the key-chain command to complete the authentication configuration for an interface.
This command requires the LAN Base Services license.
This example shows how to configure the interface to accept and send any key that belongs to the key-chain trees:
switch(config)# router eigrp 209
switch(config-router)# vrf red
switch(config-router-vrf)# authentication key-chain trees
To specify the type of authentication used in the Enhanced Interior Gateway Routing Protocol (EIGRP) packets, use the authentication mode command. To remove authentication, use the no form of this command.
authentication mode md5
no authentication mode md5
md5 |
Specifies Message Digest 5 (MD5) authentication. |
None
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5.0(3)N1(1) |
This command was introduced. |
This command requires the LAN Base Services license.
This example shows how to configure the interface to use MD5 authentication:
switch(config)# router eigrp 209
switch(config-router)# vrf red
switch(config-router-vrf)# authentication mode md5
switch(config-router-vrf)#
To configure the autonomous system (AS) number for an Enhanced Interior Gateway Routing Protocol (EIGRP) address family, use the autonomous-system command. To revert to default, use the no form of this command.
autonomous-system as-number
no autonomous-system [as-number]
as-number |
Autonomous system number. The range is from 1 to 65535. |
None
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5.0(3)N1(1) |
This command was introduced. |
Use the autonomous-system command to set a common AS number for all EIGRP instances in an address family.
This command requires the LAN Base Services license.
This example shows how to set an AS number for EIGRP for IPv4 unicast:
switch(config)# router eigrp 201
switch(config-router)# address-family ipv4 unicast
switch(config-router-af)# autonomous-system 64496
switch(config-router-af)#
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address-family (EIGRP) |
Enters the address family configuration mode for EIGRP. |