Configuration Example: VTP and Inter-VLAN Routing

Figure 15-1 shows the network topology for the conﬁguration of VTP and inter-VLAN routing. There are separate sections on conﬁguring both 2900 and 2950 series switches.

Figure 15-1 Network Topology for VTP and Inter-VLAN Routing Configuration

ISP Router

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132 VTP and Inter-VLAN Communication

ISP(config)#eexeexxxiiiitttt

ISP#ccccooooppppyy yy rrrruuuunnnn ssssttttaaaarrtrrttt Saves the conﬁguration to NVRAM

CORP Router (1721 Router Running Cisco IOS Software Release 12.2(4)

These commands work also for the 1760 and the 2620/2621 series routers Router>eeneennn

Router#ccocconoonnnffffiiiigg gg tttt

Router(config)#hhhhoosoosssttttnnnnaamaamemmeee CCCCOOROORRRPPPP Sets host name CORP(config)#nnnnoooo iipiippp ddddoomoomammaaaiiiinnnn--l--lllooooooookkukkupuuppp Turns off resolution to

avoid wait time due to DNS lookup of spelling errors

CORP(config)#lllliiiinnnnee ee ccccoooonn nn 0000

CORP(config-line)#llllooooggggggiggiiinnnngggg ssssyyyynnnncchcchrhhrrroooonnonnouoouuussss Appends the command line to a new line—no interruption from info items

CORP(config-line)#eeeexxxxeeceec-cc---ttttiiiimmemmeeeoooouuuutt tt 0000 0000 Console session will never time out

CORP(config-line)#eeeexxxxiitiittt

CORP(config)#eeeennnnaaaabblbbllleeee ssesseceecccrrrreeeett tt cccciiiisscsscoccooo Sets the secret password to cisco

CORP(config)#iiiinnnntttt ssss1111

CORP(config-if)#ddeddeeesssscccc WWAWWAAANNNN llilliiinnnnkkkk ttottooo IIIISSPSSPPP RRRRoouoouuutttteeeerrrr CORP(config-if)#iipiippp aaaadddddd dd 2222000000.00...2222000000.00.2..22200000000..1..1114444 2

2255555555..2..22255555555..2..25225555555....225225552222

CORP(config-if)#bbabbaaannnnddddwwiwwidiidddtttthhhh 1111555544444444 Sets bandwidth to 1544 kilobits for EIGRP calculation CORP(config-if)#nnonnooo sssshhuhhutuuttt

CORP(config-if)#eexeexxxiiiitttt CORP(config)#iiiinnnntttt ffffaaaa0000

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134 VTP and Inter-VLAN Communication

CORP(config-subif)#eeeexxixxitiittt

CORP(config)#rrrroooouuuuttetteeerrrr eeieeigiigggrrrrpppp 11110000 Turns on the EIGRP routing process

CORP(config-router)#nnenneteetttwwwwoooorrkrrkkk 1111992992.22...1111668668.88...1111....0000 Advertises the 192.168.1.0 network

CORP(config-router)#nnenneteetttwwwwoooorrkrrkkk 1111992992.22...1111668668.88...11110000..0..000 Advertises the 192.168.10.0 network CORP(config-router)#nnenneteetttwwwwoooorrkrrkkk 1111992992.22...1111668668.88...22220000..0..000 Advertises the

192.168.20.0 network CORP(config-router)#nnenneteetttwwwwoooorrkrrkkk 1111992992.22...1111668668.88...33330000..0..000 Advertises the

192.168.30.0 network CORP(config-router)#nnenneteetttwwwwoooorrkrrkkk 2222000000.00...2222000000.00...2222000000.00...0000 Advertises the

200.200.200.0 network CORP(config-router)#nnonno oo aaaauuuuttottooo----ssssuumuummmmmmmaaaarryrryyy Turns off auto

summari-zation CORP(config-router)#eexeexixxiiitttt

CORP(config)#eeeexxxxiiiitttt

CORP#ccccooooppyppy yy rrrruuuunn nn ssssttttaaraarrrtttt Saves the conﬁguration to NVRAM

Caution: Remember to advertise all networks.

Advertising 192.168.0.0 does not advertise networks from 192.168.0.0–

192.168.255.0. These are separate classful networks, so they must be advertised separately, just like 200.200.200.0 is advertised separately.

2900 Series Switch switch>eeneennn switch>#ccoccooonnnnffffiigiiggg tttt

switch(config)#hhhhoosoosssttttnnnnaamaamemmeee 2222990990000000SSSSwwiwwitiitttcccchhhh Sets host name

Configuration Example: VTP and Inter-VLAN Routing 135

2900Switch(config)#nnnnoo oo iiiipppp ddoddooommmmaaaaiiniin-nn---llllooooookookkkuuuupppp Turns off DNS resolution to avoid wait time due to DNS lookup of spelling errors

2900Switch(config)#lllliiniinenneee ccccoonoonnn 0000

2900Switch(config-line)#lllloogoogggggggiiiinngnnggg ssssyynyyncnnccchhhhrrrroonoonnnoooouuuussss Appends the command line to a new line—no interruption from info items

2900Switch(config-line)#eeeexxexxeeecccc----ttittiiimmmmeeeeoouooutuuttt 0000 0000 Console session will never time out

2900Switch(config-line)#eeeexxixxiiitttt

2900Switch(config)#eeeennannabaabbblllleeee sssseeeeccccrrerreteettt cciccisiisssccccoooo Sets the secret password to cisco

2900Switch(config)#eeeexxixxitiittt

2900Switch#vvlvvlallaaannnn ddaddaaattttaaaabbabbasaassseeee Enters VLAN database mode

2900Switch(vlan)#vvvvllllaaaann nn 11110000 nnannaaammmmeeee SSaSSaaalllleeseesss Creates VLAN 10 with the name Sales

2900Switch(vlan)#vvvvllllaaaann nn 22220000 nnannaaammmmeeee EEnEEnnnggggiiniinenneeeeeeerrrriiniinnngggg Creates VLAN 20 with the name Engineering 2900Switch(vlan)#vvvvllllaaaann nn 33330000 nnannaaammmmeeee MMaMMaaarrrrkkekketeetttiiiinnnngggg Creates VLAN 30 with the

name Marketing 2900Switch(vlan)#vvvvttttpppp ssesseeerrrrvvvveereerrr Makes the switch a VTP

server

2900Switch(vlan)#vvvvttttpppp ddoddooommmmaaaaiiniinnn aaaaccaccadaadddeeeemmymmyyy Assigns a domain name of academy

2900Switch(vlan)#eeeexxxxiiiitttt Applies all changes to VLAN database and exits mode

2900Switch#ccocconoonnnffffiiiigg gg tttt

2900Switch(config)#iiiinntnnt tt vvvvllllaanaannn1111

136 VTP and Inter-VLAN Communication

Configuration Example: VTP and Inter-VLAN Routing 137