US Region

Grandmetric LLC
Lewes DE 19958
16192 Coastal Hwy USA
EIN: 98-1615498
+1 302 691 94 10

EMEA Region

ul. Metalowa 5, 60-118 Poznań, Poland
NIP 7792433527
+48 61 271 04 43


Grandmetric LTD
Office 584b
182-184 High Street North
E6 2JA
+44 20 3321 5276

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  • PBR: Policy Based Routing (Cisco)

    Design & Configure

    PBR: Policy Based Routing (Cisco)

    Technology: Routing

    Area: PBR

    Vendor: Cisco

    Title: Policy Based Routing

    Software: 12.X , 15.X, IP Services

    Platform: Catalyst 3560, 3750, 3850, 4500, 6500, ISR/ASR Routers


    Policy based routing (PBR routing) offers the possibility to forward traffic based on defined criteria without verifying the IP routing table. The constructed policy is applied to interface. Every packet coming on this interface is verified against the policy and only traffic conforming (matching) the rule is subject to policy route. The entire local origin kind of traffic and everything that policy doesn’t match is still routed according to routing table based on normal destination rules.


    To configure a basic PBR routing policy which routes whole traffic directed to a single host “” and forces the packet to go via defined next hop of in agreement with predefine policy:

    R1#configure terminal
    R1(config)# ip access-list extended FROM_LAN
    R1(config-ext-nacl)# permit ip host

    R1(config)# route-map PBR-grandmetric permit 10
    R1(config-route-map)# match ip address FROM_LAN
    R1(config-route-map)# set ip next-hop

    R1(config)# interface FastEthernet0/0.13
    R1(config-subif)# ip policy route-map PBR-grandmetric


    To check if the policy is attached to specific interface: 

    R1# show ip policy
    Interface      Route map
    Fa0/0.13       PBR-grandmetric

    R1# show ip interface fastEthernet 0/0.13 | i Policy
    Policy routing is enabled, using route map PBR-grandmetric
    Input features: Policy Routing, MCI Check


    Once the policy is applied we can check the route-map status to observe how many packets match configured patterns.

    R1# show route-map PBR-grandmetric
    route-map PBR-grandmetric, permit, sequence 10
    Match clauses:
    ip address (access-lists): FROM_LAN
    Set clauses:
    ip next-hop
    Policy routing matches: 12 packets, 552 bytes

    Author: Marcin Bialy