10-11-2007 01:04 AM - edited 03-05-2019 07:01 PM
Hi there,
I was trying to create a new VLAN on my core switch but after creating,I cannot ping to the new VLAN. Attached with my new VLAN config;
Core1#conf t
Core1(config)#interface Vlan171
Core1(config)#ip address 10.19.22.2 255.255.255.0
Core1(config)#no ip redirects
Core1(config)#standby ip 10.19.22.1
Core1(config)#router ospf 100
Core1(config)#passive-interface Vlan171
Core1(config)#end
10-11-2007 01:11 AM
Hi Friend,
Where are you trying to ping from, I mean which vlan/subnet? Also can you check if your vlan 171 is up and up with "sh interface vlan 171"?
Do you have any clients physically connected to vlan 171? Or do you have any trunk carrying vlan 171? can you also check the status of vlan database with "sh vlan" command?
Regards,
Ankur
10-11-2007 01:12 AM
What do you mean by "I cannot ping to the new VLAN? Does it mean you cannot ping the core addresses 10.19.22.1 and 10.19.22.2?
Do you have routing in your distribution layer? If so, can you see 10.19.22.0/24 in the routing tables there? Maybe you have prevented the distribution layer knowing about the VLAN SVI by making the VLAN interface passive.
Has the new layer-2 VLAN been propagated down to the distribution layer? Do a show vlan on the distribution layer.
Also, you may need to do a no shut on the new SVI interface.
Please could you supply some more information about your architecture, otherwise it will not be easy to know what is going on.
Kevin Dorrell
Luxembourg
10-11-2007 01:15 AM
Hi there,
I was trying to ping within the core switch, say ping 10.19.22.2 (which is the newly created VLAN ID)which no reply.
I did a sh int vlan171 and this is what I gotten ;
Vlan171 is up, line protocol is down
Hardware is EtherSVI, address is 0006.2ad8.980a (bia 0006.2ad8.980a)
Description: SharePoint Vlan (CR20071378)
Internet address is 10.19.22.2/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:31:56, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
L2 Switched: ucast: 0 pkt, 0 bytes - mcast: 2 pkt, 128 bytes
L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes mcast
L3 out Switched: ucast: 0 pkt, 0 bytes
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 IP multicast)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
6 packets output, 384 bytes, 0 underruns
0 output errors, 3 interface resets
0 output buffer failures, 0 output buffers swapped out
I also did a sh vlan and I couldn't find this VLAN there.
I also noticed I have a spanning-tree configuration, how do I add in vlan171 into the following spanning-tree ?
spanning-tree mode mst
spanning-tree vlan 1,3,11,17,19,21,23,25,27,29,31,33,37,241,243,245 priority 1
spanning-tree vlan 247,249,251,253,255,257,259,261,263,265,267,269 priority 1
spanning-tree vlan 999 priority 1
spanning-tree vlan 4,10,14,18,20,22,24,26,28,30,34,36,50,56,100,240 priority 2
spanning-tree vlan 242,244,246,248,250,252,254,256,258,260,262,264 priority 2
spanning-tree vlan 266,268,270,280 priority 2
!
spanning-tree mst configuration
name ABC
revision 1
instance 1 vlan 1, 3, 11, 17, 19, 21, 23, 25, 27, 29, 31, 33, 37, 241
instance 1 vlan 243, 245, 247, 249, 251, 253, 255, 257, 259, 261, 263
instance 1 vlan 265, 267, 269, 999
instance 2 vlan 4, 10, 14, 18, 20, 22, 24, 26, 28, 30, 34, 36, 50, 56
instance 2 vlan 100, 240, 242, 244, 246, 248, 250, 252, 254, 256, 258
instance 2 vlan 260, 262, 264, 266, 268, 270, 280, 501
!
spanning-tree mst 0-1 priority 4096
spanning-tree mst 2 priority 12288
10-11-2007 01:24 AM
Hi Friend,
This means you have not created vlan 171 in your vlan database so first create that using a command
switch(config)#vlan 171
Once done you can see this vlan 171 in your vlan database and you can verify with command "sh vlan".
Then allow this vlan on your trunk port and you should be able to ping vlan 171 interface ip address.
HTH
Ankur
*Pls rate all helpfull post
10-11-2007 01:26 AM
Hi, how do I allow the vlan on my trunk port ? the command line ? Thanks !
10-11-2007 01:37 AM
Hi Friend,
The command is "switchport trunk allowed vlan add 171"
HTH
Ankur
*Pls rate all helpfull post
10-11-2007 01:39 AM
First of all, can you see the VLAN on the core switch when you do a show vlan. If not, then then the VLAN does not exist yet, so trying to enable it on the trunk will do nothing.
If it does exist, then can we see the trunk configuration? Does it allow only sepcific VLANs?
If you are using MST, be careful about which trunk you add it to, otherwise you will end up with an incosistent topology. Have you decided which instance you will add it to?
Kevin Dorrell
Luxembourg
10-11-2007 01:43 AM
Hi Kevin,
Sorry to interrupt here but if you see original poster second reply when I asked him for the outputs he mentioned clearly "I also did a sh vlan and I couldn't find this VLAN there"
Also my next post updated him to create vlan first and then i asked him to verify again with "sh vlan" command and finally add it to some trunk port.
Regards,
Ankur
10-11-2007 01:47 AM
Hi there,
Thanks for helping. I have added the vlan 171 and I am able to ping to vlan 171.
With regards to MST, I would like to include vlan 171 as the following;
spanning-tree mode mst
spanning-tree vlan 1,3,11,17,19,21,23,25,27,29,31,33,37,241,243,245 priority 1
spanning-tree vlan 247,249,251,253,255,257,259,261,263,265,267,269 priority 1
spanning-tree vlan 999 priority 1
spanning-tree vlan 4,10,14,18,20,22,24,26,28,30,34,36,50,56,100,171,240 priority 2
spanning-tree vlan 242,244,246,248,250,252,254,256,258,260,262,264 priority 2
spanning-tree vlan 266,268,270,280 priority 2
!
spanning-tree mst configuration
name ABC
revision 1
instance 1 vlan 1, 3, 11, 17, 19, 21, 23, 25, 27, 29, 31, 33, 37, 241
instance 1 vlan 243, 245, 247, 249, 251, 253, 255, 257, 259, 261, 263
instance 1 vlan 265, 267, 269, 999
instance 2 vlan 4, 10, 14, 18, 20, 22, 24, 26, 28, 30, 34, 36, 50, 56
instance 2 vlan 100, 171, 240, 242, 244, 246, 248, 250, 252, 254, 256, 258
instance 2 vlan 260, 262, 264, 266, 268, 270, 280, 501
!
If you notice, vlan 171 is in the list, so how do I get about adding vlan 171 into the list ?
Need the commands too...Thanks !! Sorry me admin noob...
10-11-2007 02:05 AM
Hi Friend,
Good to know it started pinging. Now I see that vlan 171 is already added in your spanning tree configuration so what exactly you are looking now?
Regards,
Ankur
10-11-2007 01:49 AM
OK Ankur. Sorry, it was me who was interrupting.
Kevin
10-11-2007 11:27 PM
Hi there,
Maybe missed this part....
Thanks for helping. I have added the vlan 171 and I am able to ping to vlan 171.
With regards to MST, I would like to include vlan 171 as the following;
spanning-tree mode mst
spanning-tree vlan 1,3,11,17,19,21,23,25,27,29,31,33,37,241,243,245 priority 1
spanning-tree vlan 247,249,251,253,255,257,259,261,263,265,267,269 priority 1
spanning-tree vlan 999 priority 1
spanning-tree vlan 4,10,14,18,20,22,24,26,28,30,34,36,50,56,100,171,240 priority 2
spanning-tree vlan 242,244,246,248,250,252,254,256,258,260,262,264 priority 2
spanning-tree vlan 266,268,270,280 priority 2
!
spanning-tree mst configuration
name ABC
revision 1
instance 1 vlan 1, 3, 11, 17, 19, 21, 23, 25, 27, 29, 31, 33, 37, 241
instance 1 vlan 243, 245, 247, 249, 251, 253, 255, 257, 259, 261, 263
instance 1 vlan 265, 267, 269, 999
instance 2 vlan 4, 10, 14, 18, 20, 22, 24, 26, 28, 30, 34, 36, 50, 56
instance 2 vlan 100, 171, 240, 242, 244, 246, 248, 250, 252, 254, 256, 258
instance 2 vlan 260, 262, 264, 266, 268, 270, 280, 501
!
If you notice, vlan 171 is in the list, so how do I get about adding vlan 171 into the list ?
Need the commands too...Thanks !! Sorry me admin noob...
10-11-2007 11:32 PM
Hi Friend,
May be I am not able to understnd your question here but I see vlan 171 is already present in the list ..
spanning-tree vlan 4,10,14,18,20,22,24,26,28,30,34,36,50,56,100,171,240 priority 2
instance 2 vlan 100, 171, 240, 242, 244, 246, 248, 250, 252, 254, 256, 258
I see vlan 171 is alreday there in your MST config so what exactly you are looking for ?
Do you mean that this is not the output from the switch and you want vlan 171 to be like this?
REgards,
Ankur
10-12-2007 12:01 AM
Hi Ankur,
Yup, thats the ideal list that I would like to have...
So, I would like to include the vlan 171.
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