SC Modules

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29 Οκτ 2013 (πριν από 3 χρόνια και 9 μήνες)

77 εμφανίσεις

7900 modules

SA Modules



Low
-
cost modul es that onl y support L2 forwardi ng



L3 forwardi ng rel i es on the central i zed processi ng of the swi tch fabri c or the proxy functi onal i ty of an SC
modul e



Onl y appl i cabl e to a L2 cl oset, desktop appl i cati ons scenari os etc.



Does not support EAD, sFl ow or egress ACLs

SC Modules



A pri mary modul e supporti ng IPv4 and IPv6 di stri buted forwardi ng



Supports EAD, sFl ow and bi di recti onal ACLs

EA Modules



Supports MPLS and features l arge modul e buffers and L2/L3 tabl e si zes



Onl y two ki n
ds of modul es are avai l abl e, 12
-
port GE or one port 10GE



Sui tabl e for L3 MPLS VPN and data center scenari os wi th hi gh bufferi ng requi rements



Provi des l arge routi ng and MAC tabl e capaci ty



ACLs do not support the pol i cy of matchi ng IPV6 packets



Does not supp
ort egress ACLs



Support sFl ow



Powerful mul ti cast capaci ty.



Lower port densi ty



IPV6 and EAD not supported

SD/EB Modules



Enhanced modul es supporti ng IPv4, IPv6, MPLS, VPLS, sFl ow and bi di recti onal ACLs



Support l arge MAC tabl e si ze



Support l arge routi ng tabl e

si ze and more VRF i nstances than EA modul es



4
-
port and 8
-
port 10GE modul es avai l abl e



Stronger buffer capabi l i ty than SC modul es



Support L2VPN functi ons of VLL/VPLS



Fast CFD (802.1ag) functi on



Fast BFD for OSPF/ISIS/LDP


The onl y di fference between SD and
EB modul es l i es i n the routi ng and MAC tabl e si zes, wi th l arger tabl es available
on EB modul es. SD/EB modul es are recommended for MPLS appl i cati ons and are mandatory for VPLS
confi gurati ons. EB/SD modul es cannot server as proxy for other modul es (thi s may
change as there i s an i ssue wi th
i nstal l i ng SD/EB modul es i n a chassi s wi th exi sti ng SA/SC/EA modul es. When thi s occurs al l i nstal l ed modul es
defaul t to tabl e si zes equal to that of the l east capabl e modul e. A proxy functi on i s bei ng devel oped for the SD/
EB
modul es to proxy for SA/SC modul es).

Module Specification Comparison

Specifications

SA

SC

EA

SD

EB

Service
processing
capability

L2 distributed
forwarding

L3 centralized
proxy

Distributed
IPv4/IPv6
forwarding

Distributed IPv4
forwarding

Distributed
MPLS forwarding

Distributed
IPv4/IPv6
forwarding
Distributed
MPLS
\
VPLS
forwarding

Distributed
IPv4/IPv6
forwarding
Distributed
MPLS
\
VPLS
forwarding

Routing
T
able

512
*

12K

128K

(routi ng mode)

128K

(
routi ng

mode)

256K

(
routi ng

mode)

MAC
T
able

8K

32K

128K

(L2
enhanced mode)

128K

(bri dgi ng mode)

512K

(bri dgi ng mode)

ARP Table

2K

8K

16K

16K

16K

VLANs


4094

4094

4094

4094

ACL
s

Ingress

Bi di recti onal

Ingress

Bi di recti onal

Bi di recti onal

IPv6

Supported
*

Supported

Not supported

Supported

Supported

EAD

Not
supported

Supported

Not supported

Supported

Supported

sFlow

Not supported

Supported

Supported

Supported

Supported

LAGs

128 x 8

128 x 8

128 x 8

128 x 8

128 x 8

Mirror Groups

4

4

4

4

4

VRF

Not supported

62

250

1K

1K

MPLS

Not supported

Not supported

Supported

Supported

Supported

VPLS

Not supported

Not supported

Not supported

Supported

Supported

802.1ag

Not supported

Not supported

Not supported

Supported

Supported

BFD

Not supported

Not supported

Not supported

Supported

Supported

Multicast VPN

Not
supported

Not supported

Supported

Supported

Supported

*
Note:
requires use of SC module or switch fabric as proxy due to small table size on SA

modules

Specifications for Switch Fabric and I/O Module MAC
/
IPv4
/
IPv6 table size



I n the case of di stri buted
forwardi ng where i ngress and egress traffi c i s l ocal l y processed on a si ngl e user
modul e, the MAC
/
I Pv4
/
I Pv6 tabl e si ze i s same as that of the modul e



I n the case of central i zed proxy processi ng (swi tch fabri c or SC modul e), the MAC
/
I Pv4
/
I Pv6 tabl e si ze i s
t
he same as that of the swi tch fabri c or the SC modul e.



I n the case of i nter
-
modul e forwardi ng, the MAC
/
I Pv4
/
I Pv6 tabl e si ze matches that of the modul e wi th the
smal l er speci fi cati on or the Proxy (swi tch fabri c or SC modul e) wi th the smal l er speci fi cati on.


Key points on mixed use of SA/SC/EA/SD/EB modules



For I PV6 appl i cati ons
-

al l modul es except EA modul es.



For MPLS appl i cati ons
-

EA modul es cannot be mi xed wi th other modul es.



It i s not recommended to mi x the SD/EB modul e wi th other modul es.



For MPLS or VPLS appl i cati ons
-

SD/EB modul es cannot be mi xed wi th other modul es.



For VPLS appl i cati ons
-

onl y wi th SD/EB modul es.



For MPLS appl i cati ons
-

onl y the fol l owi ng three confi gurati ons are recommended:



Al l SD/EB modul es



Al l EA modul es



Sal i ence

VI
-
Turbo and al l SC modul es