BFD - Is supported by Nexus EIGRP
Virtualization - VRFs are supported
NSF - Is supported
Licensing - Need an Enterprise Services license for anything other than stub routing
Autosummarization is disabled by default and cannot be enabled.
Default EIGRP Parameters (from the L3 NX-OS Guide)
Administrative distance • Internal routes—90
• External routes—170
Bandwidth percent 50 percent
Default metric for redistributed routes • Bandwidth—100000 Kb/s
• Delay—100 (10 microsecond units)
• Reliability—255
• Loading—1
• MTU—1500
EIGRP feature Disabled
Hello interval 5 seconds
Hold time 15 seconds
Equal-cost paths 8
Metric weights 1 0 1 0 0 0
Next-hop address advertised IP address of local interface
NSF convergence time 120
NSF route-hold time 240
NSF signal time 208-11
Redistribution Disabled
Split horizon Enabled
Basic configuration consists of creating an EIGRP process and adding interfaces to the process
router eigrp HELLA
redistribute static route-map STATIC
address-family ipv4 unicast
autonomous-system 100
redistribute static route-map STATIC
address-family ipv4 unicast
autonomous-system 100
interface Ethernet2/1
no switchport
ip address 1.1.1.1/24
ip router eigrp HELLA
no switchport
ip address 1.1.1.1/24
ip router eigrp HELLA
Summary addresses, split-horizon and passive interfaces are all configured under the interface under 'ip'
N7K-1(config-if)# ip passive-interface
N7K-1(config-if)# ip summary-address
N7K-1(config-if)# ip split-horizon
Authentication is a two step process where both a key-chain and the EIGRP authentication needs to be configured.
Key-chain
key chain MYKEYS
key 1
key-string cisco123
key 1
key-string cisco123
Interface
int e2/1
ip authentication mode eigrp HELLA md5
ip authentication key-chain eigrp HELLA MYKEYS
The authenication can also be set at the routing process level. Configuring on the interface overrides the routing process configuration.
ip authentication mode eigrp HELLA md5
ip authentication key-chain eigrp HELLA MYKEYS
The authenication can also be set at the routing process level. Configuring on the interface overrides the routing process configuration.
Router
router eigrp HELLA
authentication mode md5
authentication key-chain MYKEYS
Stub Routing
Stub is configured under the routing process
N7K-3(config-router)# stub ?
<CR>
direct Do advertise connected routes
leak-map Allow dynamic prefixes based on the leak-map
receive-only Set IP-EIGRP as receive only neighbor
redistributed Do advertise redistributed routes
Redistribution
I have this pretty well covered. One command worth note is how to limit the number of prefixes allowed to be redistributed
N7K-3(config-router)# redistribute maximum-prefix 10 ?
<CR>
<1-100> Threshold in %, at which message is generated
*Default value is 75
warning-only Warning msg is logged when threshold is reached
withdraw Withdraw all redistributed routes
Graceful Restart (NSF)
Graceful restarted in configured under the routing process and is enabled by default. The NSF timers can be modifed.
router eigrp HELLA
address-family ipv4 unicast
autonomous-system 100
timers nsf signal 10
timers nsf converge 100
timers nsf route-hold 200
