Cisco Ex SERIES Uživatelský manuál stáhnout pdf (Strana 31)

Juniper Networks/Cisco Systems Switch Interoperability Cookbook

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Topology!

In this example, a Juniper Virtual Chassis comprising two Juniper EX9208 switches uses

LLDP to learn the MAC address (chassis ID), port information, and system name of a

Cisco Catalyst 3850.

Figure 7 shows the LLDP validation topology. A Juniper Virtual Chassis (comprised of

two Juniper EX9208 switches) connects to a Cisco Catalyst 3850 via two 10-gigabit

Ethernet interfaces. In this example, each switch is connected with two ports using a link

aggregation group (LAG), The LAG also serves as a VLAN trunk port, with traffic using

VLAN IDs 2001-2003 allowed. LLDP would also work without link aggregation, and

with the two switch ports configured in access mode. Also note that this example

assumes spanning tree protocol (STP) has been disabled on both switches, although

LLDP would also work with STP enabled.

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Juniper!commands!

1. Define VLANs v2001, v2002, and v2003:

admin@EX9208> configure

admin@EX9208# set vlans v2001 vlan-id 2001

admin@EX9208# set vlans v2002 vlan-id 2002

admin@EX9208# set vlans v2003 vlan-id 2003

2. (Optional) Place interfaces xe-5/1/0 and xe-12/3/0 into trunk mode and allow tagged

traffic for the VLANs defined in the previous step. VLAN trunking is optional, and is not

required for LLDP to work:

admin@EX9208# set interfaces xe-5/3/1 unit 0 family ethernet-switching

interface-mode trunk

admin@EX9208# set interfaces xe-5/3/1 unit 0 family ethernet-switching vlan

members v2001

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 82 83

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Cisco Ex SERIES Uživatelský manuál Strana 31