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On small-sized networks, S2700&S3700 switches are deployed at the access layer,
S5700&S6700 switches is deployed at the core layer, and an AR series router
works as the egress router.
The access switches and core switch connect through
Eth-Trunk
to ensure
reliability.
On an access switch, each department has a
VLAN
allocated so that services are
separated by VLANs. Configuring a
VLANIF interface
on the core switch
implements Layer 3 communication between different departments.
The core switch functions as a
DHCP server
to allocate IP addresses to user
devices on the campus network.
Configuring
DHCP snooping
on the access switches prevents intranet users from
connecting a small router to the intranet to allocate IP addresses. Configuring
IPSG
on the access switches prevents intranet users from changing IP addresses.
This section uses the
S2750
as an access switch
(ACC1)
,
S5700
as a core switch
(CORE)
, and an
AR
series
router as an egress
router
(Router)
as examples to demonstrate the configuration
procedure for small-sized campus networks.
Small-Sized Campus Networks