Cisco Ex SERIES Uživatelský manuál stáhnout pdf (Strana 27)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

! ! !

Nexus7010(config-router-vrf)# address-family ipv4 unicast

Nexus7010(config-router-vrf)# redistribute direct route-map rmap1

Nexus7010(config-router-vrf)# redistribute ospf 1 route-map rmap1

Nexus7010(config)# end

Validation!

The Junos command “show route protocol /jointfilesconvert/492162/bgp” will display routes learned via

MP-BGP across the service provider’s network. The equivalent command for the Cisco

Nexus 7010 is “show ip route /jointfilesconvert/492162/bgp”. On both devices, the existence of routes

learned across the service provider’s MPLS network validates that BGP is working in the

L3 VPN.

On the data plane, a traffic generator such as Spirent TestCenter should be able to reach

sites across the service provider’s network across the L3 VPN tunnel.

Link&aggregation&

Objective!

To validate the ability of Juniper and Cisco switches to correctly forward traffic over a

logical connection created using IEEE 802.3ad link aggregation.

To verify the ability of Juniper and Cisco switches to use the link aggregation control

protocol (LACP) to dynamically remove a member from a link aggregation group (LAG).

Background!

The IEEE 802.3ad link specification defines a standards-based method for aggregating

multiple physical Ethernet links into a single logical link. The logical link, known as a

link aggregation group (LAG), is comprised of multiple members (individual pairs of

physical interfaces on each switch). LAGs may be defined statically or dynamically, the

latter using the link aggregation control protocol (LACP). With LACP enabled, 802.3ad-

compliant switches can dynamically add or remove one or more members to a LAG.

Especially when used with LACP, link aggregation adds redundancy to network

connections. Depending on the number of flows and the hashing technique used, link

aggregation may also boost available bandwidth.

Link aggregation groups also can be defined across multiple chassis, as discussed in the

“Multi-Channel Link Aggregation Group” section in this document.

Topology!

In this example, a Cisco Catalyst 3850 switch uses a two-member LAG to exchange

traffic with a Juniper Virtual Chassis comprised of two Juniper EX9208 switches. The

Virtual Chassis could also be a Juniper EX4300, a Juniper QFX510, or both of these

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Cisco Ex SERIES Uživatelský manuál Strana 27