| Author |
Sub-interfdace on 10mbp ehetrnet port
|
|
| Timi_137 2002-03-21, 10:58 am |
| How do I create Sub-interfdace on 10mbp ethetnet cisco router port? It works fien on Fast Ehternet port but not on 10. Can this be done and how? | |
|
| I use 2610 with 12.1(13) for inter-Vlan routing. Though you can only use dot1q but it's enough for your lab.
HTH | |
| Timi_137 2002-04-01, 12:38 pm |
| quote:
Originally posted by poks
I use 2610 with 12.1(13) for inter-Vlan routing. Though you can only use dot1q but it's enough for your lab.
HTH
I have 2611. How do I configure the encapsulation? Thx | |
|
| If what you are trying to accomplish is inter-vlan routing, then here's what you should do:
If you have vlan 10, vlan 20 and vlan 30:
interface e0/0.10
ip add xxxx
encapsulation dot1q 10
interface e0/0.20
ip add xxxx
encapsulation dot1q 20
etc.... | |
|
|
| tan.phan 2002-04-03, 10:46 am |
| quote:
Originally posted by Timi_137
How do I create Sub-interfdace on 10mbp ethetnet cisco router port? It works fien on Fast Ehternet port but not on 10. Can this be done and how?
Cisco router will allow sub interfaces to be created under a 10 MB Ethernet port but dotq and isl encapsulation are not available...therefore the created sub interface(s) can not take an ip address (ip address can not be assigned until the interface is encapsulated with either dotq or isl).
Therefore, no sub interfaces can be use under a 10 MB Ether port. Period!
Think about this...do you really want the router to routes multiple networks using a 10mb port? | |
| tan.phan 2002-04-03, 10:49 am |
| quote:
Originally posted by Timi_137
I have 2611. How do I configure the encapsulation? Thx
Dotq and ISL encaps are not available for a 10 mb Ether port. | |
| tan.phan 2002-04-03, 10:50 am |
| quote:
Originally posted by poks
If what you are trying to accomplish is inter-vlan routing, then here's what you should do:
If you have vlan 10, vlan 20 and vlan 30:
interface e0/0.10
ip add xxxx
encapsulation dot1q 10
interface e0/0.20
ip add xxxx
encapsulation dot1q 20
etc....
Encapsulation must take place first before an ip add can be assign. In this case encaps are not available for 10 mb ethernet port. | |
|
| from: -tan.phan-
Therefore, no sub interfaces can be use under a 10 MB Ether port. Period!
reply:
How'd you know that subinterfaces cannot be used on a 10mb port? Have you tried it? Did you try it on a 2610/11 with at least 12.1 release and configure it with dot1q encap? I would suggest trying it first before you make a conclusion on something.
this is my config and router version:
C2600 Software (C2600-DS-M), Version 12.1(13)
interface Ethernet0/0
no ip address
!
interface Ethernet0/0.10
encapsulation dot1Q 10
ip address XXXXXX 255.255.255.0
!
interface Ethernet0/0.20
encapsulation dot1Q 20
ip address XXXXXX 255.255.255.0 | |
| Yeti-GBR1 2002-04-03, 1:26 pm |
| Ok tan.phan if as you point sub-interfaces (ooops my mistake, trunked vlans) on 10MB ports them why does Cisco (now correct me if I'm wrong here, they should know best of all) actually state that the 2600's (NB. this includes the 2610 & 2611's) are on the supported list as posted by me earlier in this thread. Perhaps one should READ the article 1st before shooting from the hip!! Read this section it may help you..
http://www.cisco.com/univercd/cc/td...m#xtocid1145311
Also note that this was introduced in IOS versions 12.0(1) http://www.cisco.com/univercd/cc/td...ridge.htm#23260
If your using an IOS that is erlier than 12.1 for any of the Cisco exam I suggest you upgrade rather fast....as there are things that you will not know about as has been shown here. | |
| tan.phan 2002-04-03, 1:32 pm |
| quote:
Originally posted by poks
from: -tan.phan-
Therefore, no sub interfaces can be use under a 10 MB Ether port. Period!
reply:
How'd you know that subinterfaces cannot be used on a 10mb port? Have you tried it? Did you try it on a 2610/11 with at least 12.1 release and configure it with dot1q encap? I would suggest trying it first before you make a conclusion on something.
this is my config and router version:
C2600 Software (C2600-DS-M), Version 12.1(13)
interface Ethernet0/0
no ip address
!
interface Ethernet0/0.10
encapsulation dot1Q 10
ip address XXXXXX 255.255.255.0
!
interface Ethernet0/0.20
encapsulation dot1Q 20
ip address XXXXXX 255.255.255.0
Check this out. I dont know how you could encapsulate a sub interface with dot1 or isl when the router doesn't allow you to. Text below is from a 2610 just uploaded with 12.1(13) IOS
2610 uptime is 2 minutes
System returned to ROM by reload at 17:49:11 EDT Mon May 14 2001
System image file is "flash:c2600-i-mz.121-13.bin"
cisco 2610 (MPC860) processor (revision 0x202) with 53248K/12288K bytes of memor
y.
Processor board ID JAB030700YK (2826309238)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
Basic Rate ISDN software, Version 1.1.
1 Ethernet/IEEE 802.3 interface(s)
2 Serial(sync/async) network interface(s)
1 ISDN Basic Rate interface(s)
2610#config t
Enter configuration commands, one per line. End with CNTL/Z.
2610(config)#int e0/0.1
2610(config-subif)#?
Interface configuration commands:
arp Set arp type (arpa, probe, snap) or timeout
backup Modify backup parameters
bandwidth Set bandwidth informational parameter
bridge-group Transparent bridging interface parameters
cdp CDP interface subcommands
default Set a command to its defaults
delay Specify interface throughput delay
description Interface specific description
exit Exit from interface configuration mode
ip Interface Internet Protocol config commands
llc2 LLC2 Interface Subcommands
mtu Set the interface Maximum Transmission Unit (MTU)
netbios Use a defined NETBIOS access list or enable name-caching
no Negate a command or set its defaults
ntp Configure NTP
rate-limit Rate Limit
shutdown Shutdown the selected interface
snapshot Configure snapshot support on the interface
standby HSRP interface configuration commands
timeout Define timeout values for this interface
traffic-shape Enable Traffic Shaping on an Interface or Sub-Interface
2610(config-subif)#ip add 10.0.0.1 255.255.255.0
Configuring IP routing on a LAN subinterface is only allowed if that
subinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q, or IS
L vLAN.
2610(config-subif)#
And to answer your question...Yes I do! | |
| tan.phan 2002-04-03, 1:36 pm |
| quote:
Originally posted by Yeti-GBR1
Ok tan.phan if as you point out that you cannot have trunked vlans on 10MB ports them why does Cisco (now correct me if I'm wrong here, they should know best of all) actually state that the 2600's (NB. this includes the 2610 & 2611's) are on the supported list as posted by me earlier in this thread. Perhaps one should READ the article 1st before shooting from the hip!! Read this section it may help you..
http://www.cisco.com/univercd/cc/td...m#xtocid1145311
Also note that this was introduced in IOS versions 12.0(1) http://www.cisco.com/univercd/cc/td...ridge.htm#23260
If your using an IOS that is erlier than 12.1 for any of the Cisco exam I suggest you upgrade rather fast....as there are things that you will not know about as has been shown here.
| |
| tan.phan 2002-04-03, 1:45 pm |
| 1. No, you can't trunk a 10mb port. Period!
I agreed. No body knows better than Cisco Systems, but those documentations are created by human...and human do make mistake.
Cisco does make mistake...just like when I prooved to them that the 8500CSR doesn't support MLS when their documentation said it does.
Peace! | |
| Yeti-GBR1 2002-04-03, 1:56 pm |
| I stand corrected....cheers for showing the output.
Hmmm must try this on my 12.2(7) on both my 2620 and my 2610  oh yeah there Enterprise not IP Plus  I'll let you know...man tI am learning so much... | |
|
| from tan.phan:
1. No, you can't trunk a 10mb port. Period!
reply:
hey tan. show us what you find out if you upgrade your 12.1 with an IP Plus. Looks like your IOS is IP only.
I am interested to find out the results when you upgrade to at least an IP Plus. Look for this IOS release: c2600-ds-mz.121-13.bin
Looking forward to hearing from you soon. | |
| tan.phan 2002-04-03, 2:02 pm |
| Yo, I looked at the links and Cisco said dot1q and isl is supported with 2600 series router.
There are the 2610 and 2620, the 2610 have only 10mb ethernet port, while the 2620 have the fast ethernet port.
And to iterate my point, no dot1q or isl encapsulation is allow on a 10 mb ethernet port.
Look at my 2610 router config. How can you encap dot1q or isl when encapsulation command is not is even available?
Case closed. | |
| tan.phan 2002-04-03, 2:04 pm |
| quote:
Originally posted by poks
from tan.phan:
1. No, you can't trunk a 10mb port. Period!
reply:
hey tan. show us what you find out if you upgrade your 12.1 with an IP Plus. Looks like your IOS is IP only.
I am interested to find out the results when you upgrade to at least an IP Plus. Look for this IOS release: c2600-ds-mz.121-13.bin
Looking forward to hearing from you soon.
I am upgrading the IOS right now. This would be cool if IP Plus fixed it. See ya in a few. | |
| Yeti-GBR1 2002-04-03, 2:08 pm |
| Ok here is the output from my 2610 (R9 in the Yeti-GBR1 Labs)
Yeti-GBR1's-Cisco-Lab>r9
Trying R9 (172.21.1.1, 2009)... Open
R9>sh ver
Cisco Internetwork Operating System Software
IOS (tm) C2600 Software (C2600-JSX-M), Version 12.2(7), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Tue 15-Jan-02 20:33 by pwade
Image text-base: 0x80008088, data-base: 0x8141F5C8
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
R9 uptime is 4 days, 4 hours, 44 minutes
System returned to ROM by reload
System image file is "flash:c2600-jsx-mz.122-7.bin"
cisco 2610 (MPC860) processor (revision 0x203) with 61440K/4096K bytes of memory
.
Processor board ID JAD0508025U (3203038682)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Basic Rate ISDN software, Version 1.1.
1 Ethernet/IEEE 802.3 interface(s)
1 Serial network interface(s)
5 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
Configuration register is 0x2102
R9>
R9>en
R9#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R9(config)#interface Ethernet0/0.10
R9(config-subif)#encapsulation dot1Q 10
R9(config-subif)#ip address 10.0.0.1 255.255.255.0
R9(config-subif)#
R9#sh run
Building configuration...
Current configuration : 1289 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R9
!
boot system flash
!
ip subnet-zero
!
!
!
isdn switch-type basic-net3
call rsvp-sync
!
!
!
!
!
!
!
!
interface Ethernet0/0
ip address 172.16.30.1 255.255.255.0
half-duplex
!
interface Ethernet0/0.10
encapsulation dot1Q 10
ip address 10.0.0.1 255.255.255.0
!
interface BRI0/0
ip address 172.16.60.1 255.255.255.252
dialer idle-timeout 180
dialer string 325500
dialer load-threshold 1 either
dialer-group 1
isdn switch-type basic-net3
isdn spid1 325600 ldn 325600
isdn spid2 325600 ldn 325600
!
interface Serial0/0
no ip address
shutdown
!
interface BRI1/0
no ip address
shutdown
isdn switch-type basic-net3
!
interface BRI1/1
no ip address
shutdown
isdn switch-type basic-net3
!
interface BRI1/2
no ip address
shutdown
isdn switch-type basic-net3
!
interface BRI1/3
no ip address
shutdown
isdn switch-type basic-net3
!
ip classless
ip route 172.16.50.0 255.255.255.0 172.16.60.0
ip route 172.16.60.2 255.255.255.255 BRI0/0
no ip http server
ip pim bidir-enable
!
dialer-list 1 protocol ip permit
!
!
dial-peer cor custom
!
!
!
!
gatekeeper
shutdown
!
!
line con 0
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
end
R9#
--------------------------------------------
Hmm looks like it allows it QED!!!
Oh Yeah...
R9#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 4 subnets, 3 masks
C 172.16.60.0/30 is directly connected, BRI0/0
S 172.16.60.2/32 is directly connected, BRI0/0
S 172.16.50.0/24 [1/0] via 172.16.60.0
C 172.16.30.0/24 is directly connected, Ethernet0/0
10.0.0.0/24 is subnetted, 1 subnets
C 10.0.0.0 is directly connected, Ethernet0/0.10
R9# | |
|
| case not yet closed. You are using an IP only IOS release. Let's see what you got when you upgrade your IOS. | |
| Yeti-GBR1 2002-04-03, 2:13 pm |
| Errrr I thought it was the Enterprise version
flash:c2600-jsx-mz.122-7.bin
R9#sh interface Ethernet0/0.10
Ethernet0/0.10 is up, line protocol is up
Hardware is AmdP2, address is 0005.32c5.4460 (bia 0005.32c5.4460)
Internet address is 10.0.0.1/24
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 10.
ARP type: ARPA, ARP Timeout 04:00:00
R9# | |
| tan.phan 2002-04-03, 2:25 pm |
| Well!!!!! This is very intersting. At least I learn something new today.
12.1.13 IP PLus IOS does allow dot1q and sde encapsulation BUT NOT isl. How bizzard!
Y'all got one over me.
Peace!
Yo Poks, case is now offically closed.
...And Thanks. | |
|
| You're welcome Tan.phan.
| |
| Yeti-GBR1 2002-04-03, 2:31 pm |
| I too have learnt something...man this is how it should be...at least two of us have learn't something from all this tech stuff...keep it up lads  | |
|
| quote:
Originally posted by tan.phan
12.1.13 IP PLus IOS does allow dot1q and sde encapsulation BUT NOT isl. How bizzard!
Y'all got one over me.
That's because ISL is fast ethernet only - this subinterface type of question keeps cropping up regular, with the same answer upgrade to IP Plus for inter vlan routing on 10M everytime.
I guess you guys hammered this one to death and proved it though, so it was worth it for that.
It also proves that having a lab to play with, such as Yeti's on line lab (R9???) is invaluable.
Good Post. Period | |
| tan.phan 2002-04-04, 9:01 am |
| quote:
Originally posted by Mat P
That's because ISL is fast ethernet only
...and I think the reason why this is because ISL encapsulation modified the packet by adding extra bytes to the header...whereas dot1q doesn't.
I know for sure ISL encap modify the packet and dot1q doesn't but not too sure why ISL doesn't work on Ethernet.
Anyone agreed/disagreed? | |
| Mat P 2002-04-04, 12:02 pm |
| quote:
Originally posted by tan.phan
I know for sure ISL encap modify the packet and dot1q doesn't but not too sure why ISL doesn't work on Ethernet.
From http://www.cisco.com/warp/customer/473/741_4.html
ISL and 802.1q are two types of encapsulations used to carry VLAN information over a trunk link. In ISL, the original packet is encapsulated and an additional header is added before the frame is carried over a trunk link. At the receiving end, the header is removed and the packet is forwarded to the assigned VLAN. In 802.1q, the trunking device inserts a four-byte tag into the original packet and recomputes the Frame Check Sequence (FCS) before sending the frame over the trunk link.
You know for sure, check your facts??? Both modify the frame, but both use different methods - hence giants in your show interface stats.
I suppose Cisco made a mistake with that as well??
As for why does ISL not work on ethernet?? I can't answer that. other than to say that Cisco wrote the IOS so that ISL was only for fast ethernet (and Gb). It's probably not worth wondering about the why not's.
Period (lol) | |
|
|
| Yeti-GBR1 2002-04-04, 12:20 pm |
| Mat P ...Re your link: it helps IF you have a CCO access to get to the link..otherwise its Useless | |
| tan.phan 2002-04-04, 12:33 pm |
| I read Matt's link. Thanks.
There must be reason(s) why Cisco doesn't write ISL trunking for 10 mb ethernet port. Not just because Cisco doesn't want to...
And my hunt is how ISL packets are encapsulated vs. tag insertion like dot1q...it has to do with how the size of the packet got increased with ISL encap.
BTW, I love the sarcasm!
 | |
|
| Yeti - I was hoping he wouldn't be able to read the link - just kidding.
I always thought Americans didn't understand sarcasm, yet again I've been proved wrong - it's happening a lot recently.
|
|
|
|