3.12.2 Relationship between the number of route entries and the maximum number of neighboring routers
The following tables show the relationship between the maximum number of route entries and the maximum number of neighboring routers in IPv4 mode, IPv4/IPv6 mode, IPv6 unicast priority mode, and L2 priority mode.
|
Routing Protocol |
Maximum number of route entries #1 |
Maximum number of neighboring routers#2 |
|
|---|---|---|---|
|
The tracking functionality of policy-based routing is not used |
The tracking functionality of policy-based routing is used |
||
|
RIP |
1000 |
50 |
25 |
|
OSPF #3 #4 |
1000 |
200 |
50 |
|
10000 |
20 |
5 |
|
|
BGP4 |
16285 (65140 #5) |
250 |
25 |
#1: The maximum number of route entries includes alternate routes.
#2: When all the routing protocols (RIP, OSPF, and BGP4) are used in conjunction, the maximum number of neighboring routers for each protocol is 1/n, where n is the number of routing protocols being used.
#3: The maximum number of OSPF route entries is equivalent to the number of LSAs.
#4: When using OSPF in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#5: Includes inactive routes.
|
Routing Protocol |
Maximum number of route entries #1 |
Maximum number of neighboring routers#2 |
|
|---|---|---|---|
|
The tracking functionality of policy-based routing is not used |
The tracking functionality of policy-based routing is used |
||
|
RIP |
1000 |
50 |
25 |
|
RIPng |
1000 |
50 |
25 |
|
OSPF #3 #4 |
1000 |
200 |
50 |
|
2000 |
100 |
25 |
|
|
8000 |
25 |
6 |
|
|
OSPFv3 #3 #5 |
1000 |
50 |
25 |
|
2000 |
25 |
13 |
|
|
BGP4 |
8093 (32372 #6) |
250 |
25 |
|
BGP4+ |
3007 (12028 #6) |
50 |
25 |
#1: The maximum number of route entries includes alternate routes.
#2: When all the routing protocols (RIP, RIPng, OSPF, OSPFv3, BGP4, and BGP4+) are used in conjunction, the maximum number of neighboring routers for each protocol is 1/n, where n is the number of routing protocols being used.
#3: The maximum number of OSPF/OSPFv3 route entries is equivalent to the number of LSAs.
#4: When using OSPF in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#5: When using OSPFv3 in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#6: Includes inactive routes.
|
Routing Protocol |
Maximum number of route entries #1 |
Maximum number of neighboring routers#2 |
|
|---|---|---|---|
|
The tracking functionality of policy-based routing is not used |
The tracking functionality of policy-based routing is used |
||
|
RIP |
1000 |
50 |
25 |
|
RIPng |
1000 |
50 |
25 |
|
OSPF #3 #4 |
1000 |
200 |
25 |
|
OSPFv3 #3 #5 |
1000 |
50 |
25 |
|
5000 |
10 |
5 |
|
|
BGP4 |
1023 (4092 #6) |
250 |
25 |
|
BGP4+ |
6542 (26168 #6) |
50 |
25 |
#1: The maximum number of route entries includes alternate routes.
#2: When all the routing protocols (RIP, RIPng, OSPF, OSPFv3, BGP4, and BGP4+) are used in conjunction, the maximum number of neighboring routers for each protocol is 1/n, where n is the number of routing protocols being used.
#3: The maximum number of OSPF/OSPFv3 route entries is equivalent to the number of LSAs.
#4: When using OSPF in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#5: When using OSPFv3 in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#6: Includes inactive routes.
|
Routing Protocol |
Maximum number of route entries #1 |
Maximum number of neighboring routers#2 |
|
|---|---|---|---|
|
The tracking functionality of policy-based routing is not used |
The tracking functionality of policy-based routing is used |
||
|
RIP |
1000 |
50 |
25 |
|
RIPng |
1000 |
50 |
25 |
|
OSPF #3 #4 |
1000 |
200 |
25 |
|
2000 |
100 |
25 |
|
|
8000 |
25 |
6 |
|
|
OSPFv3 #3 #5 |
1000 |
50 |
25 |
|
2000 |
25 |
13 |
|
|
BGP4 |
8093 (32372 #6) |
250 |
25 |
|
BGP4+ |
3007 (12028 #6) |
50 |
25 |
#1: The maximum number of route entries includes alternate routes.
#2: When all the routing protocols (RIP, RIPng, OSPF, OSPFv3, BGP4, and BGP4+) are used in conjunction, the maximum number of neighboring routers for each protocol is 1/n, where n is the number of routing protocols being used.
#3: The maximum number of OSPF/OSPFv3 route entries is equivalent to the number of LSAs.
#4: When using OSPF in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#5: When using OSPFv3 in VRF, make sure that the total number of neighboring routers in "Number of LSAs x each VRF" held in each VRF does not exceed 200,000.
#6: Includes inactive routes.