ESR series service routers.ESR-Series. User manual
•
•
•
•
•
•
•
•
Step Description Command Keys
7 Specify the allowed number of routes 
for this VRF.
esr(config-vrf)# ip protocols 
<PROTOCOLS> max-routes 
<VALUE>
<PROTOCOL> – protocol type, 
may take following values: rip 
(only in global mode), ospf, isis, 
bgp;
<VALUE> – amount of routes in 
the routing table, takes values in 
the range of:
BGP
ESR-1000/1200/150
0/1511/1700/3100/
3200 – [1..5000000];
ESR-20/21/30/100/
200 – [1..2500000],
ESR-10/12V/12VF/
14VF/15 – [1.. 
1000000].
OSPF and IS-IS
ESR-1000/1200/150
0/1511/1700/3100/
3200 – [1..500000];
ESR-20/21/30/100/
200 – [1..300000];
ESR-10/12V/12VF/
14VF/15 – 
[1..30000].
8 In the context of address-family 
VPNv4 BGP configuration, enable 
extended attribute transfer.
esr(config-bgp-neighbor-af)# 
send-community extended
12.7.2  Configuration example
Objective:
Configure L3VPN based on MPLS technology between ESR1 and ESR3. The final result of the configuration is 
the appearance of connectivity between nodes connected to the VRF on different routers in the network (i.e. 
the union of VRFs on different routers via MPLS transport). In this case, transfer of MPLS service tags for 
L3VPN service via MP-BGP and transfer of transport tags to reach nexthop addresses of received BGP routes 
must be provided.