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Task #7520
closedCheckout whether OSPF can be helpful for DCL
Start date:
12/21/2019
Due date:
% Done:
0%
Estimated time:
PM Check date:
Description
- testing with new routers
- Todo: find out how to limit route imports in arista via ospf
Updated by Nico Schottelius over 4 years ago
Seems like these code blocks are already enough for internal route exchange:
protocol ospf v3 ospf_v6 {
ipv6 {
import all;
export all;
};
area 0 {
interface "bond0.8" {
cost 5;
hello 5;
retransmit 2;
wait 10;
dead 20;
};
};
}
protocol ospf v3 ospf_v4 {
ipv4 {
import all;
export all;
};
area 0 {
interface "bond0.8" {
cost 5;
hello 5;
retransmit 2;
wait 10;
dead 20;
};
};
}
Updated by Nico Schottelius over 4 years ago
Testing on arista:
switch1-place6>enable
switch1-place6#configure
switch1-place6(config)#ipv6 router ospf ?
<1-65535> Process ID
switch1-place6(config)#ipv6 router ospf 1
switch1-place6(config-router-ospf3)#show active
ipv6 router ospf 1
switch1-place6(config-router-ospf3)#
switch1-place6(config-if-Vl8)#ipv6 ospf 1 area 0
switch1-place6(config-if-Vl8)#show active
interface Vlan8
ipv6 address 2a0a:e5c0:1:8::21/64
ipv6 ospf 1 area 0.0.0.0
switch1-place6(config-if-Vl8)#
switch1-place6(config-if-Vl8)#show ipv6 ospf
Routing Process "ospfv3 1" with ID 10.3.4.1 and Instance 0 VRF default
It is not an autonomous system boundary router and is not an area border router
Minimum LSA arrival interval 1000 msecs
Initial LSA throttle delay 1000 msecs
Minimum hold time for LSA throttle 5000 msecs
Maximum wait time for LSA throttle 5000 msecs
It has 0 fully adjacent neighbors
Number of areas in this router is 1. 1 normal, 0 stub, 0 nssa
Initial SPF schedule delay 0 msecs
Minimum hold time between two consecutive SPFs 5000 msecs
Current hold time between two consecutive SPFs 5000 msecs
Maximum wait time between two consecutive SPFs 5000 msecs
SPF algorithm last executed 00:00:31 ago
No scheduled SPF
Adjacency exchange-start threshold is 20
Maximum number of next-hops supported in ECMP is 32
Graceful-restart is not configured
Graceful-restart-helper mode is enabled
Area 0.0.0.0
Number of interface in this area is 1
It is a normal area
switch1-place6(config-if-Vl8)#
switch1-place6(config-if-Vl8)#show ipv6 ospf interface
Vlan8 is up
Interface Address fe80::21c:73ff:fe3e:ed01, VRF default, Area 0.0.0.0
Network Type Broadcast, Cost 10
Transmit Delay is 1 sec, State DR, Priority 1
Designated Router is 10.3.4.1
Backup Designated Router is 0.0.0.0
Timer intervals configured, Hello 10, Dead 40, Retransmit 5
Neighbor Count is 0
Options are R E V6
switch1-place6(config-if-Vl8)#
switch1-place6(config-if-Vl8)#show ipv6 ospf database
Codes: AEX - AS External, GRC - Grace,
IAP - Inter Area Prefix, IAR - Inter Area Router,
LNK - Link, NAP - Intra Area Prefix,
NSA - Not So Stubby Area, NTW - Network,
RTR - Router
Routing Process "ospf 1", VRF default
AS Scope LSDB
Type Link ID ADV Router Age Seq# Checksum
Area 0.0.0.0 LSDB
Type Link ID ADV Router Age Seq# Checksum
RTR 0.0.0.0 10.3.4.1 121 0x80000001 0x009986
NAP 0.0.0.1 10.3.4.1 121 0x80000001 0x000ca7
Interface vlan8 LSDB
Type Link ID ADV Router Age Seq# Checksum
switch1-place6(config-if-Vl8)#
switch1-place6(config-if-Vl8)#show ipv6 ospf neighbor
switch1-place6(config-if-Vl8)#
-> arista does not see routes directly. Might need some debugging / is not important at the moment.
Updated by Nico Schottelius over 4 years ago
parameters mismatch between switch & routers: disable switch for the moment
Dec 21 14:44:41 router1 daemon.err bird: ospf_v6: Bad HELLO packet from nbr 10.3.4.1 on bond0.8 - hello interval mismatch (10)
.. or update:
switch1-place6(config)#interface vlan 8 switch1-place6(config-if-Vl8)#ipv6 ospf hello-interval 5 switch1-place6(config-if-Vl8)#ipv6 ospf dead-interval 20 switch1-place6(config-if-Vl8)#ipv6 ospf retransmit-interval 2 switch1-place6(config-if-Vl8)#ipv6 ospf cost 5 switch1-place6(config-if-Vl8)#show active interface Vlan8 ipv6 address 2a0a:e5c0:1:8::21/64 ipv6 ospf cost 5 ipv6 ospf hello-interval 5 ipv6 ospf dead-interval 20 ipv6 ospf retransmit-interval 2 ipv6 ospf 1 area 0.0.0.0 switch1-place6(config-if-Vl8)#show ipv6 ospf interface vlan 8 Vlan8 is up Interface Address fe80::21c:73ff:fe3e:ed01, VRF default, Area 0.0.0.0 Network Type Broadcast, Cost 5 Transmit Delay is 1 sec, State DR Other, Priority 1 Designated Router is 147.78.195.251 Backup Designated Router is 147.78.195.250 Timer intervals configured, Hello 5, Dead 20, Retransmit 2 Neighbor Count is 2 Options are R E V6 switch1-place6(config-if-Vl8)# switch1-place6(config-if-Vl8)#mtu 9000
Dec 21 14:49:38 router1 daemon.err bird: ospf_v6: MTU mismatch with nbr 10.3.4.1 on bond0.8 (remote 1500, local 9000)
switch1-place6(config-if-Vl8)#show ipv6 ospf neighbor
Routing Process "ospf 1":
Neighbor 147.78.195.250 VRF default priority is 1, state is Full
In area 0.0.0.0 interface Vlan8
DR is 147.78.195.251 BDR is 147.78.195.250
Options is 0
Dead timer is due in 17 seconds
Graceful-restart-helper mode is Inactive
Graceful-restart attempts: 0
Neighbor 147.78.195.251 VRF default priority is 1, state is Full
In area 0.0.0.0 interface Vlan8
DR is 147.78.195.251 BDR is 147.78.195.250
Options is 0
Dead timer is due in 15 seconds
Graceful-restart-helper mode is Inactive
Graceful-restart attempts: 0
switch1-place6(config-if-Vl8)#show ipv6 route ospf
VRF name: default
Displaying 78232 of 78254 IPv6 routing table entries
======================================================
WARNING: Some of the routes are not programmed in
hardware, and they are marked with '*'.
======================================================
Codes: C - connected, S - static, K - kernel, O3 - OSPFv3, B - BGP, R - RIP, A B - BGP Aggregate, I L1 - ISIS level 1, I L2 - ISIS level 2, NG - Nexthop Group Static Route
*O3 2001::/32 [110/10000]
via fe80::21b:21ff:febc:bfd8, Vlan8
*O3 2001:4:112::/48 [110/10000]
via fe80::21b:21ff:febc:bfd8, Vlan8
.....
Updated by Nico Schottelius over 4 years ago
- Status changed from In Progress to Closed
It works!
But not for eBGP routes.
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